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Sample records for adequate test-retest reliability

  1. Test-retest reliability of cognitive EEG

    NASA Technical Reports Server (NTRS)

    McEvoy, L. K.; Smith, M. E.; Gevins, A.

    2000-01-01

    OBJECTIVE: Task-related EEG is sensitive to changes in cognitive state produced by increased task difficulty and by transient impairment. If task-related EEG has high test-retest reliability, it could be used as part of a clinical test to assess changes in cognitive function. The aim of this study was to determine the reliability of the EEG recorded during the performance of a working memory (WM) task and a psychomotor vigilance task (PVT). METHODS: EEG was recorded while subjects rested quietly and while they performed the tasks. Within session (test-retest interval of approximately 1 h) and between session (test-retest interval of approximately 7 days) reliability was calculated for four EEG components: frontal midline theta at Fz, posterior theta at Pz, and slow and fast alpha at Pz. RESULTS: Task-related EEG was highly reliable within and between sessions (r0.9 for all components in WM task, and r0.8 for all components in the PVT). Resting EEG also showed high reliability, although the magnitude of the correlation was somewhat smaller than that of the task-related EEG (r0.7 for all 4 components). CONCLUSIONS: These results suggest that under appropriate conditions, task-related EEG has sufficient retest reliability for use in assessing clinical changes in cognitive status.

  2. Test-retest reliability of infant event related potentials evoked by faces.

    PubMed

    Munsters, N M; van Ravenswaaij, H; van den Boomen, C; Kemner, C

    2017-04-05

    Reliable measures are required to draw meaningful conclusions regarding developmental changes in longitudinal studies. Little is known, however, about the test-retest reliability of face-sensitive event related potentials (ERPs), a frequently used neural measure in infants. The aim of the current study is to investigate the test-retest reliability of ERPs typically evoked by faces in 9-10 month-old infants. The infants (N=31) were presented with neutral, fearful and happy faces that contained only the lower or higher spatial frequency information. They were tested twice within two weeks. The present results show that the test-retest reliability of the face-sensitive ERP components is moderate (P400 and Nc) to substantial (N290). However, there is low test-retest reliability for the effects of the specific experimental manipulations (i.e. emotion and spatial frequency) on the face-sensitive ERPs. To conclude, in infants the face-sensitive ERP components (i.e. N290, P400 and Nc) show adequate test-retest reliability, but not the effects of emotion and spatial frequency on these ERP components. We propose that further research focuses on investigating elements that might increase the test-retest reliability, as adequate test-retest reliability is necessary to draw meaningful conclusions on individual developmental trajectories of the face-sensitive ERPs in infants.

  3. Test-retest reliability of the Frankfurt Complaint Questionnaire.

    PubMed

    Loas, Gwenolé; Yon, Valerie; Monestès, Jean Louis; Cuesta, Manuel J

    2011-04-01

    Long-term reliability of the Frankfurt Complaint Questionnaire (FCQ) was investigated in two follow-up studies of participants with psychosis using a test-retest method. In the first study (N = 56), the duration of the follow-up ranged from 6 months to 2 years; Spearman rho was .62 for the abridged (18 items) Spanish version of the questionnaire. In Study 2 (N = 21), in participants with stable schizophrenia, the follow-up ranged from 8 to 11 years; test-retest Spearman rho was .83 for the French version of the questionnaire. Subjective experiences could constitute, in psychosis-prone people, traits or markers of psychotic vulnerability.

  4. Executive Function in Preschool Children: Test-Retest Reliability

    ERIC Educational Resources Information Center

    Beck, Danielle M.; Schaefer, Catherine; Pang, Karen; Carlson, Stephanie M.

    2011-01-01

    Research suggests that executive function (EF) may distinguish between children who are well- or ill-prepared for kindergarten; however, little is known about the test-retest reliability of measures of EF for children. We aimed to establish a battery of EF measures that are sensitive to both development and individual differences across the…

  5. Test-Retest Reliability of a Computerized Concussion Test

    PubMed Central

    Littleton, Ashley C.; Register-Mihalik, Johna K.; Guskiewicz, Kevin M.

    2015-01-01

    Background: Neurocognitive testing is an important concussion evaluation tool, but for neurocognitive tests to be useful, their psychometric properties must be well established. Test-retest reliability of computerized neurocognitive tests can influence their clinical utility. The reliability for a commonly used computerized neurocognitive test, CNS Vital Signs, is not well established. The purpose of this study was to examine test-retest reliability and reliable change indices for CNS Vital Signs in a healthy, physically active college population. Hypothesis: CNS Vital Signs yields acceptable test-retest reliability, with greater reliability between the second and third test administration compared with between the first and second administration. Study Design: Cohort study. Level of Evidence: Level 3. Methods: Forty healthy, active volunteers (16 men, 24 women; mean age, 21.05 ± 2.17 years) reported to a clinical laboratory for 3 sessions, 1 week apart. At each session, participants were administered CNS Vital Signs. Outcomes included standard scores for the following CNS Vital Signs domains: verbal memory, visual memory, psychomotor speed, cognitive flexibility, complex attention, processing speed, reaction time, executive functioning, and reasoning. Results: Participants performed significantly better on the second session and/or third session than they did on the first testing session on 6 of 9 neurocognitive domains. Pearson r test-retest correlations between sessions ranged from 0.11 to 0.87. Intraclass correlation coefficients ranged from 0.10 to 0.86. Conclusion: Clinicians should consider using reliable change indices to account for practice effects, identify meaningful score changes due to pathology, and inform clinical decisions. Clinical Relevance: This study highlights the importance of clinicians understanding the psychometric properties of computerized neurocognitive tests when using them in the management of sport-related concussion. If CNS Vital

  6. Reliability Analyses for the ADSI: Test-Retest and Internal Consistency

    ERIC Educational Resources Information Center

    Corrigan, M. J.; Gurdineer, E. E.

    2012-01-01

    Objective: This article reports on two separate studies of reliability of the Adolescent Domain Screening Inventory (ADSI), test-retest and internal consistency analyses. The ADSI has shown adequate validity, although reliability has not been established. Methods: Study 1: Students were recruited from two undergraduate courses (N = 29).…

  7. Executive Function in Preschool Children: Test-Retest Reliability

    PubMed Central

    Beck, Danielle M.; Schaefer, Catherine; Pang, Karen; Carlson, Stephanie M.

    2011-01-01

    Research suggests that executive function (EF) may distinguish between children who are well- or ill-prepared for kindergarten, however, little is known about the test-retest reliability of measures of EF for children. We aimed to establish a battery of EF measures that are sensitive to both development and individual differences across the preschool period using Conflict and Delay subtests that had a cool (abstract) or hot (extrinsic reward) focus. Results from 151 children in three age groups (2.5, 3.5, and 4.5) suggested acceptable same-day test-retest reliability on all but Delay-Cool subtasks. These findings will inform appropriate measurement selection and development for future studies. PMID:21643523

  8. Test-Retest Reliability of the Digijump Machine.

    PubMed

    Sivley, J Cody; Navalta, James W; Lyons, T Scott; Marable, Leigh K

    Repetitive jumping has been identified as a possible exercise modality able to provide sufficient stimulus to improve bone health. However, it is necessary to establish whether repetitive jumping can elicit a consistent physiological response with the ablity to monitor work rate. The purpose of this investigation was to determine the stability reliability of the Digijump device for the commonly used laboratory measures of oxygen uptake (VO2), heart rate (HR), and rate of perceived exertion (RPE). College-aged individuals (N = 17) completed two 3-min repetitive jumping bouts on the Digijump machine (120 jumps per minute, jump height = 1.27 cm) at least seven days apart. Stability reliability was calculated using the intraclass correlation coefficient derived from 1-way ANOVA. Absolute VO2 displayed the highest test-retest reliability (0.95), while the coefficient for relative VO2 was also acceptable (0.71). The test-retest reliability coefficients for HR (0.89), and RPE (0.75) were determined to be within acceptable limits. Coefficients for all variables compared well with the stability reliability reported for other ergometers such as the Stairmaster, treadmill, and cycle. This data represent an important step in determining the validity of the Digijump machine for physiological testing.

  9. Test-retest reliability of knee kinesthesia in healthy adults

    PubMed Central

    Ageberg, Eva; Flenhagen, Johan; Ljung, Jonatan

    2007-01-01

    Background Sensory information from mechanoreceptors in the skin, muscles, tendons, and joint structures plays an important role in joint stability. A joint injury can lead to disruption of the sensory system, which can be measured by proprioceptive acuity. When evaluating proprioception, assessment tools need to be reliable. The aim of this study was to assess the test-retest reliability of a device designed to measure knee proprioception. Methods Twenty-four uninjured individuals (14 women and 10 men) were examined with regard to test-retest reliability of knee kinesthesia, measured by the threshold to detection of passive motion (TDPM). Measurements were performed towards extension and flexion from the two starting positions, 20 degrees and 40 degrees knee joint flexion, giving four variables. The mean difference between test and retest together with the 95% confidence interval (test 2 minus test 1), the intraclass correlation coefficient (ICC2,1), and Bland and Altman graphs with limits of agreement, were used as statistical methods for assessing test-retest reliability. Results The intraclass correlation coefficients ranged from 0.59 to 0.70 in all variables except one. No difference was found between test and retest in three of the four TDPM variables. TDPM would need to decrease between 10% and 38%, and increase between 17% and 24% in groups of uninjured subjects to be 95% confident of detecting a real change. The limits of agreement were rather wide in all variables. The variables associated with the 20-degree starting position tended to have higher intraclass correlation coefficients and narrower limits of agreement than those associated with 40 degrees. Conclusion Three TDPM variables were considered reliable for observing change in groups of subjects without pathology. However, the limits of agreement revealed that small changes in an individual's performance cannot be detected. The higher intraclass correlation coefficients and the narrower limits of

  10. Reliability of brain volume measurements: A test-retest dataset

    PubMed Central

    Maclaren, Julian; Han, Zhaoying; Vos, Sjoerd B; Fischbein, Nancy; Bammer, Roland

    2014-01-01

    Evaluation of neurodegenerative disease progression may be assisted by quantification of the volume of structures in the human brain using magnetic resonance imaging (MRI). Automated segmentation software has improved the feasibility of this approach, but often the reliability of measurements is uncertain. We have established a unique dataset to assess the repeatability of brain segmentation and analysis methods. We acquired 120 T1-weighted volumes from 3 subjects (40 volumes/subject) in 20 sessions spanning 31 days, using the protocol recommended by the Alzheimer's Disease Neuroimaging Initiative (ADNI). Each subject was scanned twice within each session, with repositioning between the two scans, allowing determination of test-retest reliability both within a single session (intra-session) and from day to day (inter-session). To demonstrate the application of the dataset, all 3D volumes were processed using FreeSurfer v5.1. The coefficient of variation of volumetric measurements was between 1.6% (caudate) and 6.1% (thalamus). Inter-session variability exceeded intra-session variability for lateral ventricle volume (P<0.0001), indicating that ventricle volume in the subjects varied between days. PMID:25977792

  11. Reliability of brain volume measurements: a test-retest dataset.

    PubMed

    Maclaren, Julian; Han, Zhaoying; Vos, Sjoerd B; Fischbein, Nancy; Bammer, Roland

    2014-01-01

    Evaluation of neurodegenerative disease progression may be assisted by quantification of the volume of structures in the human brain using magnetic resonance imaging (MRI). Automated segmentation software has improved the feasibility of this approach, but often the reliability of measurements is uncertain. We have established a unique dataset to assess the repeatability of brain segmentation and analysis methods. We acquired 120 T1-weighted volumes from 3 subjects (40 volumes/subject) in 20 sessions spanning 31 days, using the protocol recommended by the Alzheimer's Disease Neuroimaging Initiative (ADNI). Each subject was scanned twice within each session, with repositioning between the two scans, allowing determination of test-retest reliability both within a single session (intra-session) and from day to day (inter-session). To demonstrate the application of the dataset, all 3D volumes were processed using FreeSurfer v5.1. The coefficient of variation of volumetric measurements was between 1.6% (caudate) and 6.1% (thalamus). Inter-session variability exceeded intra-session variability for lateral ventricle volume (P<0.0001), indicating that ventricle volume in the subjects varied between days.

  12. Test-retest reliability of four computerized neurocognitive assessment tools in an active duty military population.

    PubMed

    Cole, Wesley R; Arrieux, Jacques P; Schwab, Karen; Ivins, Brian J; Qashu, Felicia M; Lewis, Steven C

    2013-11-01

    Computerized neurocognitive assessment tools (NCATs) are increasingly used for baseline and post-concussion assessments. To date, NCATs have not demonstrated strong test-retest reliabilities. Most studies have used non-military populations and different methodologies, complicating the determination of the utility of NCATs in military populations. The test-retest reliability of four NCATs (Automated Neuropsychological Assessment Metrics 4 [ANAM4], CNS-Vital Signs, CogState, and Immediate Post-Concussion Assessment and Cognitive Test [ImPACT]) was investigated in a healthy active duty military sample. Four hundred and nineteen Service Members were randomly assigned to take one NCAT and 215 returned after approximately 30 days for retest. Participants deemed to have inadequate effort during one or both testing sessions, according to the NCATs scoring algorithms, were removed from analyses. Each NCAT had at least one reliability score (intraclass correlation) in the "adequate" range (.70-.79), only ImPACT had one score considered "high" (.80-.89), and no scores met "very high" criteria (.90-.99). However, overall test-retest reliabilities in four NCATs in a military sample are consistent with reliabilities reported in the literature and are lower than desired for clinical decision-making.

  13. Test-Retest Reliability of Three G-F-W Subtests.

    ERIC Educational Resources Information Center

    Baran, Jane A.; Gengel, Roy W.

    1984-01-01

    The study examined test-retest reliability of three subtests of the Goldman-Fristoe-Woodcock Auditory Skills Test Battery (Diagnostic Auditory Discrimination Test, Auditory Selective Attention Test, and Auditory Memory Tests) with 20 five-12 year olds. The only test-retest significant differences noted were on the Selective Attention subtest.…

  14. Test-retest reliability of the safe driving behavior measure for community-dwelling elderly drivers.

    PubMed

    Song, Chiang-Soon; Lee, Joo-Hyun; Han, Sang-Woo

    2016-06-01

    [Purpose] The Safe Driving Behavior Measure (SDBM) is a self-report measurement tools that assesses the safe-driving behaviors of the elderly. The purpose of this study was to evaluate the test-retest reliability of the SDBM among community-dwelling elderly drivers. [Subjects and Methods] A total of sixty-one community-dwelling elderly were enrolled to investigate the reliability of the SDBM. The SDBM was assessed in two sessions that were conducted three days apart in a quiet and well-organized assessment room. That test-retest reliability of overall scores and three domain scores of the SDBM were statistically evaluated using intraclass correlation coefficients [ICC (2.1)]. Pearson correlation coefficients were used to quantify bivariate associations among the three domains of the SDBM. [Results] The SDBM demonstrated excellent rest-retest reliability for community-dwelling elderly drivers. The Cronbach alpha coefficients of the three domains of person-vehicle (0.979), person-environment (0.944), and person-vehicle-environment (0.971) of the SDBM indicate high internal consistency. [Conclusion] The results of this study suggest that the SDBM is a reliable measure for evaluating the safe- driving of automobiles by community-dwelling elderly, and is adequate for detecting changes in scores in clinical settings.

  15. Test-retest reliability of brain morphology estimates.

    PubMed

    Madan, Christopher R; Kensinger, Elizabeth A

    2017-01-05

    Metrics of brain morphology are increasingly being used to examine inter-individual differences, making it important to evaluate the reliability of these structural measures. Here we used two open-access datasets to assess the intersession reliability of three cortical measures (thickness, gyrification, and fractal dimensionality) and two subcortical measures (volume and fractal dimensionality). Reliability was generally good, particularly with the gyrification and fractal dimensionality measures. One dataset used a sequence previously optimized for brain morphology analyses and had particularly high reliability. Examining the reliability of morphological measures is critical before the measures can be validly used to investigate inter-individual differences.

  16. The 2-Year Test-Retest Reliability of the Psychopathy Checklist-Revised in Methadone Patients.

    ERIC Educational Resources Information Center

    Rutherford, Megan; Cacciola, John S.; Alterman, Arthur I.; McKay, James R.; Cook, Terry G.

    1999-01-01

    Examined the two-year test-retest reliability of the Psychopathy Checklist-Revised (R. Hare, 1991)(PCL-R) in 200 men and 25 women methadone patients. Stability of the PCL-R was generally good, but the measure was somewhat more reliable as a continuous measure than a dichotomous measure. (SLD)

  17. Temporal Stability of Strength-Based Assessments: Test-Retest Reliability of Student and Teacher Reports

    ERIC Educational Resources Information Center

    Romer, Natalie; Merrell, Kenneth W.

    2013-01-01

    This study focused on evaluating the temporal stability of self-reported and teacher-reported perceptions of students' social and emotional skills and assets. We used a test-retest reliability procedure over repeated administrations of the child, adolescent, and teacher versions of the "Social-Emotional Assets and Resilience Scales".…

  18. Test-Retest Reliability of Self-Reported Sexual Health Measures among US Hispanic Adolescents

    ERIC Educational Resources Information Center

    Jerman, Petra; Berglas, Nancy F.; Rohrbach, Louise A.; Constantine, Norman A.

    2016-01-01

    Objective: Although Hispanic adolescents in the USA are often the focus of sexual health interventions, their response to survey measures has rarely been assessed within evaluation studies. This study documents the test-retest reliability of a wide range of self-reported sexual health values, attitudes, knowledge and behaviours among Hispanic…

  19. Test-Retest Reliability in fMRI of Language: Group and Task Effects

    ERIC Educational Resources Information Center

    Chen, E. Elinor; Small, Steven L.

    2007-01-01

    This paper explores how the test-retest reliability is modulated by different groups of participants and experimental tasks. A group of 12 healthy participants and a group of nine stroke patients performed the same language imaging experiment twice, test and retest, on different days. The experiment consists of four conditions, one audio condition…

  20. Test-Retest Reliability of the Salutogenic Wellness Promotion Scale (SWPS)

    ERIC Educational Resources Information Center

    Anderson, L. M.; Moore, J. B.; Hayden, B. M.; Becker, C. M.

    2014-01-01

    Objective: This study examined the temporal stability (i.e. test-retest reliability) of the Salutogenic Wellness Promotion Scale (SWPS) using intraclass correlation coefficients (ICC). Current intraclass results were also compared to previously published interclass correlations to support the use of the intraclass method for test-retest…

  1. The Test-Retest Reliability of the Parent and School Survey (PASS)

    ERIC Educational Resources Information Center

    Ringenberg, Matthew C.; Funk, Vanessa; Mullen, Kacy; Wilford, Amy; Kramer, Jessica

    2005-01-01

    The Parent And School Survey (PASS) is an instrument designed to quickly, easily, and accurately measure parental involvement in their children's education. It is based on Epstein's six-construct framework, with four items devoted to each construct. A test-retest reliability study of the PASS was conducted with 40 subjects to refine the 24 items…

  2. Test-Retest Reliability of the Preschool Age Psychiatric Assessment (PAPA)

    ERIC Educational Resources Information Center

    Egger, Helen Link; Erkanli, Alaattin; Keeler, Gordon; Potts, Edward; Walter, Barbara Keith; Angold, Adrian

    2006-01-01

    Objective: To examine the test-retest reliability of a new interviewer-based psychiatric diagnostic measure (the Preschool Age Psychiatric Assessment) for use with parents of preschoolers 2 to 5 years old. Method: A total of 1,073 parents of children attending a large pediatric clinic completed the Child Behavior Checklist 1 1/2-5. For 18 months,…

  3. Effect of Restricting Perimetry Testing Algorithms to Reliable Sensitivities on Test-Retest Variability

    PubMed Central

    Gardiner, Stuart K.; Mansberger, Steven L.

    2016-01-01

    Purpose We have previously shown that sensitivities obtained at severely damaged visual field locations (<15–19 dB) are unreliable and highly variable. This study evaluates a testing algorithm that does not present very high contrast stimuli in damaged locations above approximately 1000% contrast, but instead concentrates on more precise estimation at remaining locations. Methods A trained ophthalmic technician tested 36 eyes of 36 participants twice with each of two different testing algorithms: ZEST0, which allowed sensitivities within the range 0 to 35 dB, and ZEST15, which allowed sensitivities between 15 and 35 dB but was otherwise identical. The difference between the two runs for the same algorithm was used as a measure of test-retest variability. These were compared between algorithms using a random effects model with homoscedastic within-group errors whose variance was allowed to differ between algorithms. Results The estimated test-retest variance for ZEST15 was 53.1% of the test-retest variance for ZEST0, with 95% confidence interval (50.5%–55.7%). Among locations whose sensitivity was ≥17 dB on all tests, the variability of ZEST15 was 86.4% of the test-retest variance for ZEST0, with 95% confidence interval (79.3%–94.0%). Conclusions Restricting the range of possible sensitivity estimates reduced test-retest variability, not only at locations with severe damage but also at locations with higher sensitivity. Future visual field algorithms should avoid high-contrast stimuli in severely damaged locations. Given that low sensitivities cannot be measured reliably enough for most clinical uses, it appears to be more efficient to concentrate on more precise testing of less damaged locations. PMID:27784065

  4. Evaluating validity and test-retest reliability in four drive for muscularity questionnaires.

    PubMed

    Tod, David; Morrison, Todd G; Edwards, Christian

    2012-06-01

    The current study assessed relationships among four commonly used drive for muscularity questionnaires, along with their 7 and 14 day test-retest reliability. Sample 1 was comprised of young British adult males (N=272; M(AGE)=20.3) who completed the questionnaires once. Sample 2, a group of young British adult males (N=54, M(AGE)=19.3), completed the questionnaires three times spaced 7 and 14 days apart. Correlations among Sample 1 ranged from .20 to .82 providing evidence for concurrent and discriminant validities. Evidence for test-retest reliability emerged with intraclass correlations ranging from .78 to .95 (p<.001) and generally nonsignificant t-tests (p>.05). Overall, the data support the psychometric properties of the drive for muscularity inventories; however, the shared variance (35-67%) hints that refinement is possible.

  5. Test-retest reliability of lifting and carrying in a 2-day functional capacity evaluation.

    PubMed

    Reneman, M F; Dijkstra, P U; Westmaas, M; Göeken, L N H

    2002-12-01

    The objectives of this study were to establish test-retest reliability of lifting and carrying of a functional capacity evaluation (FCE) on two consecutive days and to verify the need for a 2-day protocol. A cohort of 50 patients (39 men, 11 women) with nonspecific low back pain were evaluated using a 2-day FCE protocol. Intraclass correlation coefficients (ICC) were calculated for weight lifted and carried. Predictive relationships between test and retest were explored by means of a regression analysis. The results of ICC were lifting low 0.87, lifting overhead 0.87, and carrying 0.77. Performances on day 2 were on an average 6-9% higher. Other than the amount of weight handled on day 1, no variable was found to predict performance on day 2. It was concluded that test-retest reliability of lifting and carrying was good, and the need for a 2-day protocol could not be confirmed.

  6. Establishing survey validity and reliability for American Indians through "think aloud" and test-retest methods.

    PubMed

    Hauge, Cindy Horst; Jacobs-Knight, Jacque; Jensen, Jamie L; Burgess, Katherine M; Puumala, Susan E; Wilton, Georgiana; Hanson, Jessica D

    2015-06-01

    The purpose of this study was to use a mixed-methods approach to determine the validity and reliability of measurements used within an alcohol-exposed pregnancy prevention program for American Indian women. To develop validity, content experts provided input into the survey measures, and a "think aloud" methodology was conducted with 23 American Indian women. After revising the measurements based on this input, a test-retest was conducted with 79 American Indian women who were randomized to complete either the original measurements or the new, modified measurements. The test-retest revealed that some of the questions performed better for the modified version, whereas others appeared to be more reliable for the original version. The mixed-methods approach was a useful methodology for gathering feedback on survey measurements from American Indian participants and in indicating specific survey questions that needed to be modified for this population.

  7. Test-retest reliability of the Holyoake Codependency Index with Australian students.

    PubMed

    Dear, Greg E

    2004-04-01

    The Holyoake Codependency Index is a 13-item self-report measure of three aspects of codependency: External Focus, Self-sacrifice, and a sense of being overwhelmed by another person's problematic behavior (termed Reactivity). Previous studies have supported internal validity and the internal consistency and construct validity of the subscales. The present scores for 59 students indicate full scale test-retest reliability of .88 and for subscales (.76 to .82) over a 3-wk. interval.

  8. Test-retest reliability of lower limb isokinetic endurance in COPD: A comparison of angular velocities

    PubMed Central

    Ribeiro, Fernanda; Lépine, Pierre-Alexis; Garceau-Bolduc, Corine; Coats, Valérie; Allard, Étienne; Maltais, François; Saey, Didier

    2015-01-01

    Background The purpose of this study was to determine and compare the test-retest reliability of quadriceps isokinetic endurance testing at two knee angular velocities in patients with chronic obstructive pulmonary disease (COPD). Methods After one familiarization session, 14 patients with moderate to severe COPD (mean age 65±4 years; forced expiratory volume in 1 second (FEV1) 55%±18% predicted) performed two quadriceps isokinetic endurance tests on two separate occasions within a 5–7-day interval. Quadriceps isokinetic endurance tests consisted of 30 maximal knee extensions at angular velocities of 90° and 180° per second, performed in random order. Test-retest reliability was assessed for peak torque, muscle endurance, work slope, work fatigue index, and changes in FEV1 for dyspnea and leg fatigue from rest to the end of the test. The intraclass correlation coefficient, minimal detectable change, and limits of agreement were calculated. Results High test-retest reliability was identified for peak torque and muscle total work at both velocities. Work fatigue index was considered reliable at 90° per second but not at 180° per second. A lower reliability was identified for dyspnea and leg fatigue scores at both angular velocities. Conclusion Despite a limited sample size, our findings support the use of a 30-maximal repetition isokinetic muscle testing procedure at angular velocities of 90° and 180° per second in patients with moderate to severe COPD. Endurance measurement (total isokinetic work) at 90° per second was highly reliable, with a minimal detectable change at the 95% confidence level of 10%. Peak torque and fatigue index could also be assessed reliably at 90° per second. Evaluation of dyspnea and leg fatigue using the modified Borg scale of perceived exertion was poorly reliable and its clinical usefulness is questionable. These results should be useful in the design and interpretation of future interventions aimed at improving muscle

  9. Test-retest reliability of functional connectivity networks during naturalistic fMRI paradigms.

    PubMed

    Wang, Jiahui; Ren, Yudan; Hu, Xintao; Nguyen, Vinh Thai; Guo, Lei; Han, Junwei; Guo, Christine Cong

    2017-01-17

    Functional connectivity analysis has become a powerful tool for probing the human brain function and its breakdown in neuropsychiatry disorders. So far, most studies adopted resting-state paradigm to examine functional connectivity networks in the brain, thanks to its low demand and high tolerance that are essential for clinical studies. However, the test-retest reliability of resting-state connectivity measures is moderate, potentially due to its low behavioral constraint. On the other hand, naturalistic neuroimaging paradigms, an emerging approach for cognitive neuroscience with high ecological validity, could potentially improve the reliability of functional connectivity measures. To test this hypothesis, we characterized the test-retest reliability of functional connectivity measures during a natural viewing condition, and benchmarked it against resting-state connectivity measures acquired within the same functional magnetic resonance imaging (fMRI) session. We found that the reliability of connectivity and graph theoretical measures of brain networks is significantly improved during natural viewing conditions over resting-state conditions, with an average increase of almost 50% across various connectivity measures. Not only sensory networks for audio-visual processing become more reliable, higher order brain networks, such as default mode and attention networks, but also appear to show higher reliability during natural viewing. Our results support the use of natural viewing paradigms in estimating functional connectivity of brain networks, and have important implications for clinical application of fMRI. Hum Brain Mapp, 2017. © 2017 Wiley Periodicals, Inc.

  10. Test-retest reliability of the Advanced Psychodiagnostic Interpretation (API) scoring system for the Bender Gestalt in chronic schizophrenics.

    PubMed

    Aucone, E J; Wagner, E E; Raphael, A J; Golden, C J; Espe-Pfeifer, P; Dornheim, L; Seldon, J; Pospisil, T; Proctor-Weber, Z; Calabria, M

    2001-09-01

    This study assesses the test-retest reliability of the revised Advanced Psychodiagnostic Interpretation (API) scoring system for the Bender Gestalt Test (BGT). The API system identifies 207 possible distortions in a BGT protocol. Test-retest reliability for 40 schizophrenic patients tested twice with a mean interval of 6.4 years (SD=3.8 years) was good, ranging from .71 to .80. Further reliability and validity studies are needed to further demonstrate the effectiveness of the system.

  11. Test-Retest Cross-Reliability of Tests to Assess Neuromuscular Function as a Multidimensional Concept.

    PubMed

    Bernecke, Vaida; Pukenas, Kazimieras; Imbrasiene, Daiva; Mickeviciene, Dalia; Baranauskiene, Neringa; Eimantas, Nerijus; Brazaitis, Marius

    2015-07-01

    The purpose of this investigation was to estimate the test-retest cross-reliability of peripheral and central changes with respect to nonlinear and linear measures of a surface electromyography (EMG) signal measured during isometric maximal voluntary contraction (MVC) combined with superimposed electrical stimulation during a brief and fatiguing task involving the ankle plantar flexors over 2 follicular phases of menstrual cycle. Ten healthy female adults underwent 1 familiarization session and 5 identical test-retest sessions. The results showed that the decrease in plantar flexor EMG components (root mean square [RMS], mean frequency [MnF], wavelet packet entropy [WPE]) for soleus and gastrocnemius muscles, central activation ratio (CAR) and MVC, and contractile properties (P20, P100, PTT-100, and half-relaxation time) of the plantar flexor muscles at the end of 2-minute MVC were similar (time effect; p < 0.001, η(p)² > 0.7, statistical power [SP] > 99%) and exhibited high stability over 5 trials (trial effect; p > 0.05; η(p)² < 0.2, SP < 30%). High reliability between trials was found for 5-second MVC (intraclass correlation coefficient [ICC] > 0.82, p < 0.001) and meaningful reliability for 2-minute MVC (ICC > 0.66, p < 0.01). In conclusion, in young healthy women, measurements of neuromuscular function, such as RMS, MnF, and WPE of a surface EMG signal, MVC, and CAR from a brief and sustained MVC of the ankle plantar flexors, are reliable, and multidimensional stability was found with respect to both high and low correlation outcomes across the 5 identical test-retest trials of any 2 properties measured during brief and sustained MVC.

  12. Children's Color Trails Test 1 & 2: test-retest reliability and factorial validity.

    PubMed

    Llorente, Antolin M; Voigt, Robert G; Williams, Jane; Frailey, J Kennard; Satz, Paul; D'Elia, Louis F

    2009-05-01

    This investigation examined the test-retest reliability and the factorial validity of the Children's Color Trails Test 1 & 2 (CCTT) using two distinct and independent studies and their respective research samples. The reliability of the CCTT was evaluated in a study with 6-12-year-old children (n = 54) strictly selected and diagnosed with attention-deficit/hyperactivity disorder from an interventional protocol using test-retest coefficients at 8- and 16-week time intervals. Factorial validity was investigated using groups of children with traumatic brain injury (TBI) (n = 137), children with other types of trauma than brain or head injury (Other Injury) (n = 132), and healthy controls (n = 114) from a protocol assessing the neuropsychological sequelae of traumatic brain injury. The results revealed completion time test-retest reliability in the moderate range, which may be considered modest (r(tt) =.46-.68) in this sample of children with ADHD. Interference reliability coefficients were greater and in the moderate-high range (r(tt) =.75-.78). Factorial analytic results revealed a three-factor structure solution for all three groups (TBI, Other Injury, and controls). As a result of CCTT's factorial loadings, Factor 1 was labeled speed of perceptual tracking and susceptibility to interference, Factor 2 was labeled inattention and impulsivity, and Factor 3 was labeled simple inattention. Relative limitations and strengths associated with this investigation including practice effects associated with repeated CCTT administrations also were addressed within the context of the extant findings and existing trail-making test literature.

  13. Test-Retest Reliability of a Novel Isokinetic Squat Device With Strength-Trained Athletes.

    PubMed

    Bridgeman, Lee A; McGuigan, Michael R; Gill, Nicholas D; Dulson, Deborah K

    2016-11-01

    Bridgeman, LA, McGuigan, MR, Gill, ND, and Dulson, DK. Test-retest reliability of a novel isokinetic squat device with strength-trained athletes. J Strength Cond Res 30(11): 3261-3265, 2016-The aim of this study was to investigate the test-retest reliability of a novel multijoint isokinetic squat device. The subjects in this study were 10 strength-trained athletes. Each subject completed 3 maximal testing sessions to assess peak concentric and eccentric force (N) over a 3-week period using the Exerbotics squat device. Mean differences between eccentric and concentric force across the trials were calculated. Intraclass correlation coefficients (ICCs) and coefficients of variation (CVs) for the variables of interest were calculated using an excel reliability spreadsheet. Between trials 1 and 2 an 11.0 and 2.3% increase in mean concentric and eccentric forces, respectively, was reported. Between trials 2 and 3 a 1.35% increase in the mean concentric force production and a 1.4% increase in eccentric force production was reported. The mean concentric peak force CV and ICC across the 3 trials was 10% (7.6-15.4) and 0.95 (0.87-0.98) respectively. However, the mean eccentric peak force CV and ICC across the trials was 7.2% (5.5-11.1) and 0.90 (0.76-0.97), respectively. Based on these findings it is suggested that the Exerbotics squat device shows good test-retest reliability. Therefore practitioners and investigators may consider its use to monitor changes in concentric and eccentric peak force.

  14. The test-retest reliability of a standardized neurocognitive and neurophysiological test battery: "neuromarker".

    PubMed

    Williams, L M; Simms, E; Clark, C R; Paul, R H; Rowe, D; Gordon, E

    2005-12-01

    NeuroMarker combines EEG and ERP measures with neurocognitive tests in a fully computerized and standardized testing system. It is designed for use across the lifespan and has a large normative database of over 1,000 subjects. This study was a preliminary evaluation of "NeuroMarker" in subjects spanning four decades. Twenty-one healthy subjects (12-57 years) were tested at baseline and four weeks later. From the "Neuromarker" battery, the authors analyzed EEG data (eyes open and closed) and ERPs elicited during auditory oddball (N100, P200, N200, P300) and working memory (P150, P300) tasks. Concomitant neuropsychological data, acquired using a touch-screen system, comprised measures of sensori-motor, attention, verbal, executive, and memory function. Test-retest data were examined using analyses of variance and correlational procedures (corrected for multiple comparisons), with parallel analyses of age. EEG data did not differ across sessions, and showed high test-retest reliability (.71-.95), particularly for theta and delta (>.85). ERP components also showed sound reliability, particularly for sites where components are maximal: fronto-central N100 (.76-.77), centro-parietal P300 (.78-.81) to oddball targets, N100 and P200 (.74-.86) to oddball non-targets, and P150 amplitude and latency (.84-.93) to working memory stimuli. Neuropsychological tests showed a similarly sound level of consistency (on average, .70), with the most consistent tests tapping simple motor function, estimated intelligence, switching of attention (Part 2), verbal interference response time and memory intrusions (.71-.89). Age and sex did not have a differential impact on reliability for EEG, ERP, or neuropsychology measures. These findings provide preliminary evidence that the "NeuroMarker" battery is reliable for test-retest assessments. The results suggest that the standardized approach has utility for providing sensitive clinical and treatment evaluations across age groups.

  15. Test-Retest Reliability of Computerized Neurocognitive Testing in Youth Ice Hockey Players.

    PubMed

    Womble, Melissa N; Reynolds, Erin; Schatz, Philip; Shah, Kishan M; Kontos, Anthony P

    2016-06-01

    Computerized neurocognitive tests are frequently used to assess pediatric sport-related concussions; however, only 1 study has focused on the test-retest reliability of the Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT) in high school athletes and age influences have largely been ignored. Therefore, the purpose was to investigate the test-retest reliability of ImPACT and underlying age influences in a pediatric population. Two hundred (169 men and 31 women) youth ice hockey players completed ImPACT before/after a 6-month season. Reliability was assessed using Pearson correlation coefficients, intraclass correlation coefficients (ICCs), and regression-based methods (RBz). ICCs for the sample ranged from .48 to .75 (single)/.65 to .86 (average). In general, the older athletes (15-18: Single/Average ICCs = .35-.75/.52-.86) demonstrated greater reliability across composites than the younger athletes (11-14: Single/Average ICCs = .54-.63/.70-.77). Although there was variation in athletes' performance across two test administrations, RBz revealed that only a small percentage of athletes performed beyond 80%, 90%, and 95% confidence intervals. Statistical metrics demonstrated reliability coefficients for ImPACT composites in a pediatric sample similar to previous studies, and also revealed important age-related influences.

  16. Test-Retest Reliability and Stability of the Nicotine Metabolite Ratio Among Treatment-Seeking Smokers

    PubMed Central

    Hamilton, Diana A.; Mahoney, Martin C.; Novalen, Maria; Chenoweth, Meghan J.; Heitjan, Daniel F.; Lerman, Caryn; Tyndale, Rachel F.

    2015-01-01

    Introduction: The nicotine metabolite ratio (NMR), the ratio of 3-hydroxycotinine to cotinine, is a biomarker used in smoking cessation research, with several retrospective studies suggesting that NMR predicts treatment outcome. To be maximally useful in tailoring treatment, estimates of NMR should be stable over time. The present study is the first to examine the short-term test-retest reliability of NMR among treatment-seeking smokers. Methods: Blood NMR was assessed at two time points, approximately 2–3 weeks apart and prior to intervention, among 72 healthy adult smokers (49% female; 35% non-White) enrolled in a cessation trial (http://ClinicalTrials.gov ID: NCT01314001). Results: Mean NMR was stable from Time-1 to Time-2, with no significant change between assessments; test-retest reliability for NMR values was excellent (ICC[2,1] = 0.87). Test-retest reliability remained acceptable to high when NMR was categorized, as in recent clinical trials. Classification of participants as slow (quartile 1, NMR ≤ 0.24) or normal/fast NMR (quartiles 2–4, NMR ≥ 0.25) was consistent from Time-1 to Time-2 for 96% of participants (κ = 0.89). Though classification of participants into NMR quartiles was less consistent from Time-1 to Time-2 (67% agreement; weighted κ = 0.73), all reclassifications occurred between adjacent quartiles. Conclusions: Overall, these data support the use of a single NMR assessment for association studies with smoking phenotypes and in smokers seeking to quit, and they encourage large-scale efforts to determine optimal NMR cutpoints for tailoring treatment selection. PMID:25732567

  17. One year test-retest reliability of neurocognitive baseline scores in 10- to 12-year olds.

    PubMed

    Moser, Rosemarie Scolaro; Schatz, Philip; Grosner, Emily; Kollias, Kelly

    2017-01-01

    How often youth athletes 10-12 years of age should undergo neurocognitive baseline testing remains an unanswered question. We sought to examine the test-retest reliability of annual ImPACT data in a sample of middle school athletes. Participants were 30 youth athletes, ages 10-12 years (Mean = 11.6, SD = 0.6) selected from a larger database of 10-18 year old athletes, who completed two consecutive annual baseline evaluations using the online version of ImPACT. Athlete assent and parental consent were obtained for all participants. Assessments were conducted either individually or in small groups of 2 to 3 athletes, under the supervision of a neuropsychologist or post-doctoral fellow. Test-retest coefficients were as follows: Verbal Memory .71, Visual Memory .35, Visual Motor Speed .69, Reaction Time .34. Intra-class Correlation Coefficients (single/average) were as follows: Verbal Memory .70/.83, Visual Memory .35/.52, Visual Motor Speed .69/.82, Reaction Time .34/.50. Regression-based measures to correct for practice effects revealed that only a small percentage of cases fell outside 90 and 95% confidence intervals, reflecting stability across assessments. Findings indicate that test-retest reliability of Verbal Memory and Visual Motor Speed are generally stable in 10-12 year old athletes. Nevertheless, Visual Memory Index, Reaction Time Index, and Symptom Checklist scores appear to be less reliable over time, especially compared to published data on high school athletes, suggesting the utility of re-testing on an annual basis in this younger age group.

  18. Construct validation and test-retest reliability of a mealtime satisfaction questionnaire for retirement home residents.

    PubMed

    Pizzola, Lisa; Martos, Zoe; Pfisterer, Kaylen; de Groot, Lisette; Keller, Heather

    2013-01-01

    Mealtime satisfaction is an important component of quality of life (QOL) in residential care, yet there currently is no self-administered tool described in the literature. The purpose of this study is to investigate internal and test-retest reliability, and construct validity of a mealtime satisfaction questionnaire (MSQ) designed for residential care, more specifically retirement homes. A 15-item MSQ was developed and eligible participants from four retirement homes (n = 749) were invited to participate. The participation rate was 24% and the median age was 88 years for respondents. The internal consistency of the MSQ was high (Cronbach Alpha = 0.83) and the test-retest reliability was also high (Intraclass coefficient = 0.91, P < 0.01). The MSQ was associated with a valid and reliable QOL instrument for older adults (Mann Whitney Test = 1595.5, P < 0.01). The MSQ is reliable and is content and construct valid. QOL can be enriched by improving mealtime satisfaction in retirement homes.

  19. Test-Retest Reliability of Common Measures of Eating Disorder Symptoms in Men Versus Women.

    PubMed

    Forbush, Kelsie T; Hilderbrand, Lindsay A; Bohrer, Brittany K; Chapa, Danielle A N

    2017-04-01

    Approximately 10% to 30% of individuals with eating disorders (EDs) are male, yet because measures often have not been tested among male participants, it is unclear whether the psychometric properties of ED measures are equivalent between sexes. The purpose of this study was to compare the test-retest reliability of common ED measures in men versus women. Participants ( N = 227; 58.1% female) completed self-report measures of body dissatisfaction, restrained eating, disinhibited eating, bulimic symptoms, and desire-for-muscularity at baseline and 2-to-4 weeks later. Intraclass correlations were used to compute retest correlations. Spearman's rho was used to compute retest correlations for skewed and kurtotic variables. We compared 95% confidence intervals for intraclass correlation coefficients to determine whether measures differed in reliability between sexes. Most ED measures had at least acceptable test-retest reliabilities. However, few measures of disinhibited and binge eating demonstrated good reliability in men. Results highlight the utility of several ED measures for assessing symptom change over time, and the need for additional research to identify and correct for sources of gender unreliability among ED self-report measures in men-particularly for assessing constructs that include binge-eating behavior.

  20. Test-Retest Reliability of a Serious Game for Delirium Screening in the Emergency Department

    PubMed Central

    Tong, Tiffany; Chignell, Mark; Tierney, Mary C.; Lee, Jacques S.

    2016-01-01

    Introduction: Cognitive screening in settings such as emergency departments (ED) is frequently carried out using paper-and-pencil tests that require administration by trained staff. These assessments often compete with other clinical duties and thus may not be routinely administered in these busy settings. Literature has shown that the presence of cognitive impairments such as dementia and delirium are often missed in older ED patients. Failure to recognize delirium can have devastating consequences including increased mortality (Kakuma et al., 2003). Given the demands on emergency staff, an automated cognitive test to screen for delirium onset could be a valuable tool to support delirium prevention and management. In earlier research we examined the concurrent validity of a serious game, and carried out an initial assessment of its potential as a delirium screening tool (Tong et al., 2016). In this paper, we examine the test-retest reliability of the game, as it is an important criterion in a cognitive test for detecting risk of delirium onset. Objective: To demonstrate the test-retest reliability of the screening tool over time in a clinical sample of older emergency patients. A secondary objective is to assess whether there are practice effects that might make game performance unstable over repeated presentations. Materials and Methods: Adults over the age of 70 were recruited from a hospital ED. Each patient played our serious game in an initial session soon after they arrived in the ED, and in follow up sessions conducted at 8-h intervals (for each participant there were up to five follow up sessions, depending on how long the person stayed in the ED). Results: A total of 114 adults (61 females, 53 males) between the ages of 70 and 104 years (M = 81 years, SD = 7) participated in our study after screening out delirious patients. We observed a test-retest reliability of the serious game (as assessed by correlation r-values) between 0.5 and 0.8 across adjacent

  1. Test-Retest Reliability of a Serious Game for Delirium Screening in the Emergency Department.

    PubMed

    Tong, Tiffany; Chignell, Mark; Tierney, Mary C; Lee, Jacques S

    2016-01-01

    Introduction: Cognitive screening in settings such as emergency departments (ED) is frequently carried out using paper-and-pencil tests that require administration by trained staff. These assessments often compete with other clinical duties and thus may not be routinely administered in these busy settings. Literature has shown that the presence of cognitive impairments such as dementia and delirium are often missed in older ED patients. Failure to recognize delirium can have devastating consequences including increased mortality (Kakuma et al., 2003). Given the demands on emergency staff, an automated cognitive test to screen for delirium onset could be a valuable tool to support delirium prevention and management. In earlier research we examined the concurrent validity of a serious game, and carried out an initial assessment of its potential as a delirium screening tool (Tong et al., 2016). In this paper, we examine the test-retest reliability of the game, as it is an important criterion in a cognitive test for detecting risk of delirium onset. Objective: To demonstrate the test-retest reliability of the screening tool over time in a clinical sample of older emergency patients. A secondary objective is to assess whether there are practice effects that might make game performance unstable over repeated presentations. Materials and Methods: Adults over the age of 70 were recruited from a hospital ED. Each patient played our serious game in an initial session soon after they arrived in the ED, and in follow up sessions conducted at 8-h intervals (for each participant there were up to five follow up sessions, depending on how long the person stayed in the ED). Results: A total of 114 adults (61 females, 53 males) between the ages of 70 and 104 years (M = 81 years, SD = 7) participated in our study after screening out delirious patients. We observed a test-retest reliability of the serious game (as assessed by correlation r-values) between 0.5 and 0.8 across adjacent

  2. Test-retest reliability of regional electroencephalogram (EEG) and cardiovascular measures in social anxiety disorder (SAD).

    PubMed

    Schmidt, Louis A; Santesso, Diane L; Miskovic, Vladimir; Mathewson, Karen J; McCabe, Randi E; Antony, Martin M; Moscovitch, David A

    2012-04-01

    Although the search for psychophysiological manifestations of social anxiety has a rich history, there appear to be no published reports examining the reliability of continuous electrocortical measures that putatively index stress vulnerability and stress reactivity in socially anxious individuals. We examined the 1-week test-retest reliability of regional electroencephalogram (EEG) alpha asymmetry and power, respiratory sinus arrhythmia (RSA), heart period, and heart period variability measures at rest and during anticipation of an impromptu speech in 26 adults diagnosed with social anxiety disorder (SAD). Across the 1-week time period, we found medium-to-large correlations for regional EEG asymmetry and large correlations for regional EEG alpha power, RSA, heart period, and heart period variability measures at rest and during speech anticipation, before and after accounting for age and medication status. These results are similar to patterns observed in nonclinical samples and appear to provide the first documented evidence of test-retest reliability of psychophysiological measures that index central nervous system activity in socially anxious individuals. These findings also provide support for the notion that resting frontal EEG asymmetry and RSA constitute relatively stable individual differences in this clinical population.

  3. Test-retest reliability of the Clinical Learning Environment, Supervision and Nurse Teacher (CLES + T) scale.

    PubMed

    Gustafsson, Margareta; Blomberg, Karin; Holmefur, Marie

    2015-07-01

    The Clinical Learning Environment, Supervision and Nurse Teacher (CLES + T) scale evaluates the student nurses' perception of the learning environment and supervision within the clinical placement. It has never been tested in a replication study. The aim of the present study was to evaluate the test-retest reliability of the CLES + T scale. The CLES + T scale was administered twice to a group of 42 student nurses, with a one-week interval. Test-retest reliability was determined by calculations of Intraclass Correlation Coefficients (ICCs) and weighted Kappa coefficients. Standard Error of Measurements (SEM) and Smallest Detectable Difference (SDD) determined the precision of individual scores. Bland-Altman plots were created for analyses of systematic differences between the test occasions. The results of the study showed that the stability over time was good to excellent (ICC 0.88-0.96) in the sub-dimensions "Supervisory relationship", "Pedagogical atmosphere on the ward" and "Role of the nurse teacher". Measurements of "Premises of nursing on the ward" and "Leadership style of the manager" had lower but still acceptable stability (ICC 0.70-0.75). No systematic differences occurred between the test occasions. This study supports the usefulness of the CLES + T scale as a reliable measure of the student nurses' perception of the learning environment within the clinical placement at a hospital.

  4. Test-retest reliability of isometric shoulder muscle strength measurement with a handheld dynamometer and belt.

    PubMed

    Katoh, Munenori

    2015-06-01

    [Purpose] The aim of this study was to develop a method of measuring isometric shoulder joint muscle strength using a handheld dynamometer with a belt and investigate its test-retest reliability. [Subjects] The subjects comprised 40 healthy adults. [Methods] Six types of isometric shoulder muscle strength were measured twice, and reliability was assessed. [Results] The intraclass correlation coefficient (1, 1) values ranged from 0.976 to 0.902. The result of a Bland-Altman analysis showed differences in the types of errors between measurement items. [Conclusion] The relative reliability of isometric shoulder muscle measurement using a handheld dynamometer with a belt was high. However, analysis of absolute reliability revealed errors that may affect interpretation of values; therefore, it was considered that adapting the greater of two measurement values is appropriate.

  5. The 2-year test-retest reliability of the Psychopathy Checklist Revised in methadone patients.

    PubMed

    Rutherford, M; Cacciola, J S; Alterman, A I; McKay, J R; Cook, T G

    1999-09-01

    The 2-year test-retest reliability of the Psychopathy Checklist-Revised (PCL-R) was examined in 200 men and 25 women methadone patients. Stability of the PCL-R was generally good whether it was evaluated as a dichotomous or dimensional measure. Utilizing a diagnostic cutoff score of 25 or more the intraclass correlation coefficients (ICCs) were.48 for men and.67 for women. For the Total PCL-R score ICCs were.60 and.65 for men and women, respectively. Factor 1 was more reliably measured in women compared to men (.63 vs.43). For men, Factor 1 was significantly less reliable than Factor 2 or the Total score. For women, Factor 2 was significantly less reliable than the Total PCL-R score or Factor 1.

  6. Test-Retest Reliability and descriptive analyses of the Modified Important People and Activities (MIPA) Interview

    PubMed Central

    Zywiak, William H.; Stout, Robert L.; Braciszewski, Jordan M.; Wray, Tyler B.; Longabaugh, Richard

    2016-01-01

    Background The Important People and Activities (IPA) instrument assesses network characteristics and social support for drinking and abstinence. The IPA has garnered widespread use in the alcohol treatment field. We modified the IPA to assess HIV status, drug of choice, and IV drug use among social network members. Further, we queried frequency of unprotected sex, between the participant and network members. Aim Since this measure was modified, and the test-retest reliability of the IPA has only rarely been examined, we conducted a small substudy (n=26) to examine 1-week test-retest reliability of this measure. Methods Participants were individuals in a day treatment program with an SUD and/or AUD diagnosis. Results Drug of choice for the participants represented roughly equal thirds of heroin, cocaine, and alcohol. The sample was 62% female and 39% Latino/a. At pretest 198 persons were named on the MIPA (M=7.6 network members per subject). It was determined that 152 of the people were overlapping between the test and retest. Conclusions Percent agreement, ICCs, and kappas for the items ranged from acceptable to excellent across the two time periods. Classification of network members as positive, negative, or neutral influences on sobriety also demonstrated good to excellent kappas. PMID:27429606

  7. Quantifying the Test-Retest Reliability of Magnetoencephalography Resting-State Functional Connectivity.

    PubMed

    Garcés, Pilar; Martín-Buro, María Carmen; Maestú, Fernando

    2016-07-01

    The coordinated activity of the resting-state brain can be evaluated with magnetoencephalography (MEG) for distinct brain rhythms by performing source reconstruction to estimate the activities of target brain regions and employing one of the many existent functional connectivity (FC) algorithms. Although this procedure has been applied in a great amount of studies both with healthy and pathological populations, the reliability of such FC estimates is unknown, and this impairs the use of resting-state MEG FC at the individual level. In this study, the test-retest reliability of MEG resting FC was evaluated by exploring both within- and between-subject variability in FC in 16 healthy subjects who underwent three resting-state MEG scans. FC was computed after beamforming source reconstruction with four popular FC metrics: phase-locking value (PLV), phase lag index (PLI), direct envelope correlation (d-ecor), and envelope correlation with leakage correction (lc-ecor). Then, test-restest reliability and within- and between-subject agreement were evaluated with the intraclass correlation coefficient (ICC) and Kendall's W, respectively. Reliability was found to depend on the FC metric, the frequency band, and the specific link. As a general trend, greater test-retest reliability was found for PLV in theta to gamma, and for lc-ecor and d-ecor in beta. Further inspection of the ICC distribution revealed that volume conduction effects could be contributing to high ICC in PLV and d-ecor. In addition, stronger links were found to be more reliable. Overall, this encourages the further use of resting-state MEG FC for individual-level studies, especially with PLV or envelope correlation metrics.

  8. Isokinetic Strength and Endurance Tests used Pre- and Post-Spaceflight: Test-Retest Reliability

    NASA Technical Reports Server (NTRS)

    Laughlin, Mitzi S.; Lee, Stuart M. C.; Loehr, James A.; Amonette, William E.

    2009-01-01

    To assess changes in muscular strength and endurance after microgravity exposure, NASA measures isokinetic strength and endurance across multiple sessions before and after long-duration space flight. Accurate interpretation of pre- and post-flight measures depends upon the reliability of each measure. The purpose of this study was to evaluate the test-retest reliability of the NASA International Space Station (ISS) isokinetic protocol. Twenty-four healthy subjects (12 M/12 F, 32.0 +/- 5.6 years) volunteered to participate. Isokinetic knee, ankle, and trunk flexion and extension strength as well as endurance of the knee flexors and extensors were measured using a Cybex NORM isokinetic dynamometer. The first weekly session was considered a familiarization session. Data were collected and analyzed for weeks 2-4. Repeated measures analysis of variance (alpha=0.05) was used to identify weekly differences in isokinetic measures. Test-retest reliability was evaluated by intraclass correlation coefficients (ICC) (3,1). No significant differences were found between weeks in any of the strength measures and the reliability of the strength measures were all considered excellent (ICC greater than 0.9), except for concentric ankle dorsi-flexion (ICC=0.67). Although a significant difference was noted in weekly endurance measures of knee extension (p less than 0.01), the reliability of endurance measure by week were considered excellent for knee flexion (ICC=0.97) and knee extension (ICC=0.96). Except for concentric ankle dorsi-flexion, the isokinetic strength and endurance measures are highly reliable when following the NASA ISS protocol. This protocol should allow accurate interpretation isokinetic data even with a small number of crew members.

  9. Development, test-retest reliability and validity of the Pharmacy Value-Added Services Questionnaire (PVASQ)

    PubMed Central

    Tan, Christine L.; Hassali, Mohamed A.; Saleem, Fahad; Shafie, Asrul A.; Aljadhey, Hisham; Gan, Vincent B.

    2015-01-01

    Objective: (i) To develop the Pharmacy Value-Added Services Questionnaire (PVASQ) using emerging themes generated from interviews. (ii) To establish reliability and validity of questionnaire instrument. Methods: Using an extended Theory of Planned Behavior as the theoretical model, face-to-face interviews generated salient beliefs of pharmacy value-added services. The PVASQ was constructed initially in English incorporating important themes and later translated into the Malay language with forward and backward translation. Intention (INT) to adopt pharmacy value-added services is predicted by attitudes (ATT), subjective norms (SN), perceived behavioral control (PBC), knowledge and expectations. Using a 7-point Likert-type scale and a dichotomous scale, test-retest reliability (N=25) was assessed by administrating the questionnaire instrument twice at an interval of one week apart. Internal consistency was measured by Cronbach’s alpha and construct validity between two administrations was assessed using the kappa statistic and the intraclass correlation coefficient (ICC). Confirmatory Factor Analysis, CFA (N=410) was conducted to assess construct validity of the PVASQ. Results: The kappa coefficients indicate a moderate to almost perfect strength of agreement between test and retest. The ICC for all scales tested for intra-rater (test-retest) reliability was good. The overall Cronbach’ s alpha (N=25) is 0.912 and 0.908 for the two time points. The result of CFA (N=410) showed most items loaded strongly and correctly into corresponding factors. Only one item was eliminated. Conclusions: This study is the first to develop and establish the reliability and validity of the Pharmacy Value-Added Services Questionnaire instrument using the Theory of Planned Behavior as the theoretical model. The translated Malay language version of PVASQ is reliable and valid to predict Malaysian patients’ intention to adopt pharmacy value-added services to collect partial medicine

  10. Developing an estimate of daily cumulative loading for the knee: examining test-retest reliability.

    PubMed

    Robbins, Shawn M K; Birmingham, Trevor B; Jones, Gareth R; Callaghan, Jack P; Maly, Monica R

    2009-11-01

    Although the knee adduction moment during gait is a valid and reliable proxy for the dynamic load on the medial compartment of the knee, it represents exposure to loading during one stride only. In contrast, a measure that incorporates both the nature and frequency of loading throughout daily activities might provide additional insight into the effects of cumulative knee loading. The purpose of this study was to introduce a new representation of daily cumulative knee loading and examine its test-retest reliability. Thirty healthy adults participated. Cumulative knee loading was calculated on two testing periods from the mean external knee adduction moment stance phase impulse, measured with a three-dimensional motion capture system over five walking trials, and mean steps/day, measured with a unidimensional accelerometer over one week. Analysis for test-retest reliability included Bland-Altman graphs, intraclass correlation coefficients (ICC 2,1) and standard errors of measurements (SEM). The ICC values for cumulative knee loading, adduction impulse and steps/day ranged from 0.84 to 0.89. Bland-Altman plots suggested daily cumulative knee loading and steps/day measures were less reliable at higher values. The SEM values were 9.67 kNm s, 1.45 Nm s and 1043 steps/day for cumulative knee loading, adduction impulse and steps/day, respectively. Daily cumulative knee loading is reliable and provides a stable measure of the total exposure to knee loading. These findings support further study of cumulative knee loading to determine its potential clinical importance.

  11. Test-retest reliability of graph theory measures of structural brain connectivity.

    PubMed

    Dennis, Emily L; Jahanshad, Neda; Toga, Arthur W; McMahon, Katie L; de Zubicaray, Greig I; Martin, Nicholas G; Wright, Margaret J; Thompson, Paul M

    2012-01-01

    The human connectome has recently become a popular research topic in neuroscience, and many new algorithms have been applied to analyze brain networks. In particular, network topology measures from graph theory have been adapted to analyze network efficiency and 'small-world' properties. While there has been a surge in the number of papers examining connectivity through graph theory, questions remain about its test-retest reliability (TRT). In particular, the reproducibility of structural connectivity measures has not been assessed. We examined the TRT of global connectivity measures generated from graph theory analyses of 17 young adults who underwent two high-angular resolution diffusion (HARDI) scans approximately 3 months apart. Of the measures assessed, modularity had the highest TRT, and it was stable across a range of sparsities (a thresholding parameter used to define which network edges are retained). These reliability measures underline the need to develop network descriptors that are robust to acquisition parameters.

  12. Test-retest reliability of freesurfer measurements within and between sites: Effects of visual approval process.

    PubMed

    Iscan, Zafer; Jin, Tony B; Kendrick, Alexandria; Szeglin, Bryan; Lu, Hanzhang; Trivedi, Madhukar; Fava, Maurizio; McGrath, Patrick J; Weissman, Myrna; Kurian, Benji T; Adams, Phillip; Weyandt, Sarah; Toups, Marisa; Carmody, Thomas; McInnis, Melvin; Cusin, Cristina; Cooper, Crystal; Oquendo, Maria A; Parsey, Ramin V; DeLorenzo, Christine

    2015-09-01

    In the last decade, many studies have used automated processes to analyze magnetic resonance imaging (MRI) data such as cortical thickness, which is one indicator of neuronal health. Due to the convenience of image processing software (e.g., FreeSurfer), standard practice is to rely on automated results without performing visual inspection of intermediate processing. In this work, structural MRIs of 40 healthy controls who were scanned twice were used to determine the test-retest reliability of FreeSurfer-derived cortical measures in four groups of subjects-those 25 that passed visual inspection (approved), those 15 that failed visual inspection (disapproved), a combined group, and a subset of 10 subjects (Travel) whose test and retest scans occurred at different sites. Test-retest correlation (TRC), intraclass correlation coefficient (ICC), and percent difference (PD) were used to measure the reliability in the Destrieux and Desikan-Killiany (DK) atlases. In the approved subjects, reliability of cortical thickness/surface area/volume (DK atlas only) were: TRC (0.82/0.88/0.88), ICC (0.81/0.87/0.88), PD (0.86/1.19/1.39), which represent a significant improvement over these measures when disapproved subjects are included. Travel subjects' results show that cortical thickness reliability is more sensitive to site differences than the cortical surface area and volume. To determine the effect of visual inspection on sample size required for studies of MRI-derived cortical thickness, the number of subjects required to show group differences was calculated. Significant differences observed across imaging sites, between visually approved/disapproved subjects, and across regions with different sizes suggest that these measures should be used with caution.

  13. Good test--retest reliability for standard and advanced false-belief tasks across a wide range of abilities.

    PubMed

    Hughes, C; Adlam, A; Happé, F; Jackson, J; Taylor, A; Caspi, A

    2000-05-01

    Although tests of young children's understanding of mind have had a remarkable impact upon developmental and clinical psychological research over the past 20 years, very little is known about their reliability. Indeed, the only existing study of test-retest reliability suggests unacceptably poor results for first-order false-belief tasks (Mayes, Klin, Tercyak, Cicchetti, & Cohen, 1996), although this may in part reflect the nonstandard (video-based) procedures adopted by these authors. The present study had four major aims. The first was to re-examine the reliability of false-belief tasks, using more standard (puppet and storybook) procedures. The second was to assess whether the test-retest reliability of false-belief task performance is equivalent for children of contrasting ability levels. The third aim was to explore whether adopting an aggregate approach improves the reliability with which children's early mental-state awareness can be measured. The fourth aim was to examine for the first time the test-retest reliability of children's performances on more advanced theory-of-mind tasks. Our results suggest that most standard and advanced false-belief tasks do in fact show good test-retest reliability and internal consistency, with very strong test-retest correlations between aggregate scores for children of all levels of ability.

  14. High Test-retest-reliability of pain-related evoked potentials (PREP) in healthy subjects.

    PubMed

    Özgül, Özüm Simal; Maier, Christoph; Enax-Krumova, Elena K; Vollert, Jan; Fischer, Marc; Tegenthoff, Martin; Höffken, Oliver

    2017-03-22

    Pain-related-evoked potentials (PREP) is an established electrophysiological method to evaluate the signal transmission of electrically stimulated A-delta fibres. Although prerequisite for its clinical use, test-retest-reliability and side-to-side differences of bilateral stimulation in healthy subjects have not been examined yet. We performed PREP twice within 3 to 14days in 33 healthy subjects bilaterally by stimulating the dorsal hand. Detection (DT) and pain thresholds (PT) after electrical stimulation, the corresponding pain ratings, latencies of P0, N1, P1 and N2 components and the corresponding amplitudes were assessed. Impact of electrically induced pain intensity, age, sex, and arm length on PREP was analysed. MANOVA, t-Test, interclass correlation coefficient (ICC), standard error of measurement (SEM), smallest real difference (SRD), Bland-Altmann-Analysis as well as ANCOVA were used for statistical analysis. Measurement from both sides on both days resulted in mean N1-latencies from 142.39 ±18.12ms to 144.03 ±16.62ms and in mean N1P1-amplitudes from 39.04 ±12.26μV to 40.53 ±12.9μV. Analysis of a side-to-side effect showed for the N1-latency a F-value of 0.038 and for the N1P1-amplitude of 0.004 (p >0.8). We found intraclass correlation coefficients (ICC) from 0.88 to 0.93 and a standard error of measurement (SEM) < 10% of mean values for all measurements concerning the N1-Latency and N1P1-amplitude. Intraclass correlation coefficients, standard error of measurement and Bland-Altman-Analyses revealed excellent test-retest-reliability for N1-latency and N1P1-amplitude without systematic error and there was no side-to-side effect on PREP. N1-latency (r=0.35, p <0.05) and N1P1-amplitude (r=-0.45, p <0.05) correlated with age and additionally N1-latency correlated with arm length (r=0.45, p<0.001). In contrast, pain intensity during the stimulation had no effect on both N1-latency and N1P1-amplitude. In summary, PREP showed high test-retest-reliability

  15. We need more replication research - A case for test-retest reliability.

    PubMed

    Leppink, Jimmie; Pérez-Fuster, Patricia

    2017-04-07

    Following debates in psychology on the importance of replication research, we have also started to see pleas for a more prominent role for replication research in medical education. To enable replication research, it is of paramount importance to carefully study the reliability of the instruments we use. Cronbach's alpha has been the most widely used estimator of reliability in the field of medical education, notably as some kind of quality label of test or questionnaire scores based on multiple items or of the reliability of assessment across exam stations. However, as this narrative review outlines, Cronbach's alpha or alternative reliability statistics may complement but not replace psychometric methods such as factor analysis. Moreover, multiple-item measurements should be preferred above single-item measurements, and when using single-item measurements, coefficients as Cronbach's alpha should not be interpreted as indicators of the reliability of a single item when that item is administered after fundamentally different activities, such as learning tasks that differ in content. Finally, if we want to follow up on recent pleas for more replication research, we have to start studying the test-retest reliability of the instruments we use.

  16. Test-retest reliability of structural brain networks from diffusion MRI.

    PubMed

    Buchanan, Colin R; Pernet, Cyril R; Gorgolewski, Krzysztof J; Storkey, Amos J; Bastin, Mark E

    2014-02-01

    Structural brain networks constructed from diffusion MRI (dMRI) and tractography have been demonstrated in healthy volunteers and more recently in various disorders affecting brain connectivity. However, few studies have addressed the reproducibility of the resulting networks. We measured the test-retest properties of such networks by varying several factors affecting network construction using ten healthy volunteers who underwent a dMRI protocol at 1.5T on two separate occasions. Each T1-weighted brain was parcellated into 84 regions-of-interest and network connections were identified using dMRI and two alternative tractography algorithms, two alternative seeding strategies, a white matter waypoint constraint and three alternative network weightings. In each case, four common graph-theoretic measures were obtained. Network properties were assessed both node-wise and per network in terms of the intraclass correlation coefficient (ICC) and by comparing within- and between-subject differences. Our findings suggest that test-retest performance was improved when: 1) seeding from white matter, rather than grey; and 2) using probabilistic tractography with a two-fibre model and sufficient streamlines, rather than deterministic tensor tractography. In terms of network weighting, a measure of streamline density produced better test-retest performance than tract-averaged diffusion anisotropy, although it remains unclear which is a more accurate representation of the underlying connectivity. For the best performing configuration, the global within-subject differences were between 3.2% and 11.9% with ICCs between 0.62 and 0.76. The mean nodal within-subject differences were between 5.2% and 24.2% with mean ICCs between 0.46 and 0.62. For 83.3% (70/84) of nodes, the within-subject differences were smaller than between-subject differences. Overall, these findings suggest that whilst current techniques produce networks capable of characterising the genuine between

  17. Throwing performance and test-retest reliability in Olympic female water polo players.

    PubMed

    Freeston, Jonathan; Rooney, Kieron; Smith, Stephen; OʼMeara, Damien

    2014-08-01

    Shooting performance is critical to successful water polo performance, requiring high levels of speed and accuracy. However, shooting speed and accuracy performance of elite female water polo players has not been described in detail nor has the reliability of accuracy measures been reported. Consequently, the aim of this study was to describe shooting performance in elite female water polo players and compare the test-retest reliability of the currently available accuracy measures. Ten Olympic female water polo players were tested on 3 occasions before Olympic competition for maximal throwing speed and accuracy (total error and hit percentage) toward various target locations, with and without a goalkeeper (GK) present. The current participants (all Olympic athletes) achieved higher speeds (16.8 m·s-1), higher hit percentages (45.3%) of a 20-cm sniper net target, and lower errors (20.7 cm) than any other female water polo players investigated previously. Performance was similar across the different target locations; however, both speed (15.2 vs. 14.8 m·s-1; p ≤ 0.05) and accuracy (50.2 vs. 37.7%; p ≤ 0.05) were reduced in the presence of a GK. Speed and total error was similar across the 3 testing sessions; however, hit percentage was statistically significantly higher in the final session (58.8% vs. 40.4 and 36.4%). Maximal throwing speed showed high levels of test-retest reliability (0.96). Total error (intraclass correlation [ICC] = 0.79) had slightly greater reliability than hit percentage (ICC = 0.73) overall. Hit percentage (ICC = 0.82) showed slightly greater reliability than total error (ICC = 0.72) without a GK present, whereas total error (ICC = 0.79) showed much greater reliability than hit percentage (ICC = 0.34) when a GK was present. This study benchmarks the high degree of throwing speed and accuracy required at the Olympic level in female water polo players. Although resource intensive, total error is a reliable measure of accuracy that allows

  18. Test-retest reliability of graph metrics of resting state MRI functional brain networks: A review.

    PubMed

    Andellini, Martina; Cannatà, Vittorio; Gazzellini, Simone; Bernardi, Bruno; Napolitano, Antonio

    2015-09-30

    The employment of graph theory to analyze spontaneous fluctuations in resting state BOLD fMRI data has become a dominant theme in brain imaging studies and neuroscience. Analysis of resting state functional brain networks based on graph theory has proven to be a powerful tool to quantitatively characterize functional architecture of the brain and it has provided a new platform to explore the overall structure of local and global functional connectivity in the brain. Due to its increased use and possible expansion to clinical use, it is essential that the reliability of such a technique is very strongly assessed. In this review, we explore the outcome of recent studies in network reliability which apply graph theory to analyze connectome resting state networks. Therefore, we investigate which preprocessing steps may affect reproducibility the most. In order to investigate network reliability, we compared the test-retest (TRT) reliability of functional data of published neuroimaging studies with different preprocessing steps. In particular we tested influence of global signal regression, correlation metric choice, binary versus weighted link definition, frequency band selection and length of time-series. Statistical analysis shows that only frequency band selection and length of time-series seem to affect TRT reliability. Our results highlight the importance of the choice of the preprocessing steps to achieve more reproducible measurements.

  19. Test-retest reliability of a dichotic digits test for assessing central auditory function in Alzheimer's disease.

    PubMed

    Strouse, A L; Hall, J W

    1995-01-01

    Test-retest reliability for the dichotic digits test was measured in 10 subjects diagnosed with mild-to-moderate Alzheimer's disease and a control group of 10 subjects with no evidence of dementia, matched for age, gender and average degree of hearing loss. Although initial scores among the Alzheimer group were more variable, test-retest reliability over a month period was reasonably high for both subject groups. Results are in agreement with previous reports on dichotic digits showing good sensitivity, ease in administration and time efficiency. Use of the dichotic digits test for screening of central auditory function in the Alzheimer population is supported.

  20. Test-retest reliability of effective connectivity in the face perception network.

    PubMed

    Frässle, Stefan; Paulus, Frieder Michel; Krach, Sören; Jansen, Andreas

    2016-02-01

    Computational approaches have great potential for moving neuroscience toward mechanistic models of the functional integration among brain regions. Dynamic causal modeling (DCM) offers a promising framework for inferring the effective connectivity among brain regions and thus unraveling the neural mechanisms of both normal cognitive function and psychiatric disorders. While the benefit of such approaches depends heavily on their reliability, systematic analyses of the within-subject stability are rare. Here, we present a thorough investigation of the test-retest reliability of an fMRI paradigm for DCM analysis dedicated to unraveling intra- and interhemispheric integration among the core regions of the face perception network. First, we examined the reliability of face-specific BOLD activity in 25 healthy volunteers, who performed a face perception paradigm in two separate sessions. We found good to excellent reliability of BOLD activity within the DCM-relevant regions. Second, we assessed the stability of effective connectivity among these regions by analyzing the reliability of Bayesian model selection and model parameter estimation in DCM. Reliability was excellent for the negative free energy and good for model parameter estimation, when restricting the analysis to parameters with substantial effect sizes. Third, even when the experiment was shortened, reliability of BOLD activity and DCM results dropped only slightly as a function of the length of the experiment. This suggests that the face perception paradigm presented here provides reliable estimates for both conventional activation and effective connectivity measures. We conclude this paper with an outlook on potential clinical applications of the paradigm for studying psychiatric disorders. Hum Brain Mapp 37:730-744, 2016. © 2015 Wiley Periodicals, Inc.

  1. The test-retest reliability of knee joint center location techniques.

    PubMed

    Sinclair, Jonathan; Hebron, Jack; Taylor, Paul J

    2015-04-01

    The principal source of measurement error in three-dimensional analyses is the definition of the joint center about which segmental rotations occur. The hip joint has received considerable attention in three-dimensional modeling analyses yet the reliability of the different techniques for the definition of the knee joint center has yet to be established. This study investigated the reliability of five different knee joint center estimation techniques: femoral epicondyle, femoral condyle, tibial ridge, plugin- gait, and functional. Twelve male participants walked at 1.25 m·s-1 and three-dimensional kinetics/kinematics of the knee and ankle were collected. The knee joint center was defined twice using each technique (test-and-retest) and the joint kinetic/kinematic data were applied to both. Wilcoxon rank tests and intraclass correlation coefficients (ICCs) were used to compare test and retest angular parameters and kinematic waveforms. The results show significant differences in coronal and transverse planes angulation using the tibial ridge, plug-in-gait, and functional methods. The strongest test-retest ICCs were observed for the femoral epicondyle and femoral condyle configurations. The findings from the current investigation advocate that the femoral epicondyle and femoral condyle techniques for the estimation of the knee joint center are currently the most reliable techniques.

  2. Test-retest reliability of a questionnaire to assess physical environmental factors pertaining to physical activity

    PubMed Central

    Evenson, Kelly R; McGinn, Aileen P

    2005-01-01

    Background Despite the documented benefits of physical activity, many adults do not obtain the recommended amounts. Barriers to physical activity occur at multiple levels, including at the individual, interpersonal, and environmental levels. Only until more recently has there been a concerted focus on how the physical environment might affect physical activity behavior. With this new area of study, self-report measures should be psychometrically tested before use in research studies. Therefore the objective of this study was to document the test-retest reliability of a questionnaire designed to assess physical environmental factors that might be associated with physical activity in a diverse adult population. Methods Test and retest surveys were conducted over the telephone with 106 African American and White women and men living in either Forsyth County, North Carolina or Jackson, Mississippi. Reliability of self-reported environmental factors across four domains (e.g., access to facilities and destinations, functionality and safety, aesthetics, natural environment) was determined using intraclass correlation coefficients (ICC) overall and separately by gender and race. Results Generally items displayed moderate and sometimes substantial reliability (ICC between 0.4 to 0.8), with a few differences by gender or race, across each of the domains. Conclusion This study provides some psychometric evidence for the use of many of these questions in studies examining the effect of self-reported physical environmental measures on physical activity behaviors, among African American and White women and men. PMID:15958168

  3. Test-retest reliability and validity of the Sniffin' TOM odor memory test.

    PubMed

    Croy, Ilona; Zehner, Cora; Larsson, Maria; Zucco, Gesualdo M; Hummel, Thomas

    2015-03-01

    Few attempts have been made to develop an olfactory test that captures episodic retention of olfactory information. Assessment of episodic odor memory is of particular interest in aging and in the cognitively impaired as both episodic memory deficits and olfactory loss have been targeted as reliable hallmarks of cognitive decline and impending dementia. Here, 96 healthy participants (18-92 years) and an additional 19 older people with mild cognitive impairment were tested (73-82 years). Participants were presented with 8 common odors with intentional encoding instructions that were followed by a yes-no recognition test. After recognition completion, participants were asked to identify all odors by means of free or cued identification. A retest of the odor memory test (Sniffin' TOM = test of odor memory) took place 17 days later. The results revealed satisfactory test-retest reliability (0.70) of odor recognition memory. Both recognition and identification performance were negatively affected by age and more pronounced among the cognitively impaired. In conclusion, the present work presents a reliable, valid, and simple test of episodic odor recognition memory that may be used in clinical groups where both episodic memory deficits and olfactory loss are prevalent preclinically such as Alzheimer's disease.

  4. TEST-RETEST RELIABILITY OF THE CLOSED KINETIC CHAIN UPPER EXTREMITY STABILITY TEST (CKCUEST) IN ADOLESCENTS

    PubMed Central

    Pitangui, Ana C.R.; Nascimento, Vinícius Y.S.; da Silva, Hítalo A.; dos Passos, Muana H.P.; de Araújo, Rodrigo C.

    2017-01-01

    Background The Closed Kinetic Chain Upper Extremity Stability Test (CKCUEST) has been proposed as an option to assess upper limb function and stability; however, there are few studies that support the use of this test in adolescents. Purpose The purpose of the present study was to investigate the intersession reliability and agreement of three CKCUEST scores in adolescents and establish clinimetric values for this test. Study Design Test-retest reliability Methods Twenty-five healthy adolescents of both sexes were evaluated. The subjects performed two CKCUEST with an interval of one week between the tests. An intraclass correlation coefficient (ICC3,3) two-way mixed model with a 95% interval of confidence was utilized to determine intersession reliability. A Bland-Altman graph was plotted to analyze the agreement between assessments. The presence of systematic error was evaluated by a one-sample t test. The difference between the evaluation and reevaluation was observed using a paired-sample t test. The level of significance was set at 0.05. Standard error of measurements and minimum detectable changes were calculated. Results The intersession reliability of the average touches score, normalized score, and power score were 0.68, 0.68 and 0.87, the standard error of measurement were 2.17, 1.35 and 6.49, and the minimal detectable change was 6.01, 3.74 and 17.98, respectively. The presence of systematic error (p < 0.014), the significant difference between the measurements (p < 0.05), and the analysis of the Bland-Altman graph infer that CKCUEST is a discordant test with moderate to excellent reliability when used with adolescents. Conclusion The CKCUEST is a measurement with moderate to excellent reliability for adolescents. Level of Evidence 2b PMID:28217423

  5. Test-Retest Reliability of Sudden Ankle Inversion Measurements in Subjects With Healthy Ankle Joints

    PubMed Central

    Eechaute, Christophe; Vaes, Peter; Duquet, William; Van Gheluwe, Bart

    2007-01-01

    Context: Sudden ankle inversion tests have been used to investigate whether the onset of peroneal muscle activity is delayed in patients with chronically unstable ankle joints. Before interpreting test results of latency times in patients with chronic ankle instability and healthy subjects, the reliability of these measures must be first demonstrated. Objective: To investigate the test-retest reliability of variables measured during a sudden ankle inversion movement in standing subjects with healthy ankle joints. Design: Validation study. Setting: Research laboratory. Patients or Other Participants: 15 subjects with healthy ankle joints (30 ankles). Intervention(s): Subjects stood on an ankle inversion platform with both feet tightly fixed to independently moveable trapdoors. An unexpected sudden ankle inversion of 50° was imposed. Main Outcome Measure(s): We measured latency and motor response times and electromechanical delay of the peroneus longus muscle, along with the time and angular position of the first and second decelerating moments, the mean and maximum inversion speed, and the total inversion time. Correlation coefficients and standard error of measurements were calculated. Results: Intraclass correlation coefficients ranged from 0.17 for the electromechanical delay of the peroneus longus muscle (standard error of measurement = 2.7 milliseconds) to 0.89 for the maximum inversion speed (standard error of measurement = 34.8 milliseconds). Conclusions: The reliability of the latency and motor response times of the peroneus longus muscle, the time of the first and second decelerating moments, and the mean and maximum inversion speed was acceptable in subjects with healthy ankle joints and supports the investigation of the reliability of these measures in subjects with chronic ankle instability. The lower reliability of the electromechanical delay of the peroneus longus muscle and the angular positions of both decelerating moments calls the use of these

  6. Test-retest reliability of white matter structural brain networks: a multiband diffusion MRI study.

    PubMed

    Zhao, Tengda; Duan, Fei; Liao, Xuhong; Dai, Zhengjia; Cao, Miao; He, Yong; Shu, Ni

    2015-01-01

    The multiband EPI sequence has been developed for the human connectome project to accelerate MRI data acquisition. However, no study has yet investigated the test-retest (TRT) reliability of the graph metrics of white matter (WM) structural brain networks constructed from this new sequence. Here, we employed a multiband diffusion MRI (dMRI) dataset with repeated scanning sessions and constructed both low- and high-resolution WM networks by volume- and surface-based parcellation methods. The reproducibility of network metrics and its dependence on type of construction procedures was assessed by the intra-class correlation coefficient (ICC). We observed conserved topological architecture of WM structural networks constructed from the multiband dMRI data as previous findings from conventional dMRI. For the global network properties, the first order metrics were more reliable than second order metrics. Between two parcellation methods, networks with volume-based parcellation showed better reliability than surface-based parcellation, especially for the global metrics. Between different resolutions, the high-resolution network exhibited higher TRT performance than the low-resolution in terms of the global metrics with a large effect size, whereas the low-resolution performs better in terms of local (region and connection) properties with a relatively low effect size. Moreover, we identified that the association and primary cortices showed higher reproducibility than the paralimbic/limbic regions. The important hub regions and rich-club connections are more reliable than the non-hub regions and connections. Finally, we found WM networks from the multiband dMRI showed higher reproducibility compared with those from the conventional dMRI. Together, our results demonstrated the fair to good reliability of the WM structural brain networks from the multiband EPI sequence, suggesting its potential utility for exploring individual differences and for clinical applications.

  7. Stop Signal and Conners' Continuous Performance Tasks: Test-Retest Reliability of Two Inhibition Measures in ADHD Children

    ERIC Educational Resources Information Center

    Soreni, Noam; Crosbie, Jennifer; Ickowicz, Abel; Schachar, Russell

    2009-01-01

    Objective: To measure test-retest reliability of the Stop-Signal Task (SST) and the Conners' Continuous Performance Test (CPT) in children with ADHD. Methods: 12 children with ADHD (age 11.46 plus or minus 1.66) participated in the study. Primary outcome measures were stop-signal reaction time (SSRT) for the SST and CPT's commission errors (%FP).…

  8. One-Year Test-Retest Reliability of the Inventory of Statements about Self-Injury (ISAS)

    ERIC Educational Resources Information Center

    Glenn, Catherine R.; Klonsky, E. David

    2011-01-01

    Nonsuicidal self-injury (NSSI) is a growing public health problem among adolescents and young adults. The Inventory of Statements About Self-Injury (ISAS) is a self-report measure designed to assess NSSI behaviors and functions. The current study examines the one-year test-retest reliability of the ISAS in a sample of young adult self-injurers.…

  9. Test-retest reliability of concurrently recorded steady-state and somatosensory evoked potentials in somatosensory sustained spatial attention.

    PubMed

    Pang, Cheuk Yee; Mueller, Matthias M

    2014-07-01

    We investigated the test-retest reliability of sustained spatial attention modulation of steady-state somatosensory evoked potentials (SSSEPs) and the N140 component of the somatosensory evoked potentials (SEPs). Participants attended to one or both hands to perform a target detection task while concurrent mechanical vibrations were presented for 4500ms to both hands in two recording sessions. Results revealed that the amplitude and the attentional modulation of SSSEPs had high test-retest reliability, while the test-retest reliability for the N140 component was low. SSSEPs for stimuli with focused and divided attention had about the same amplitude. For the N140 component only the stimuli with focused attention were significantly enhanced. We found greater habituation effects for the N140 compared to SSSEP amplitudes but attentional modulation was unaffected in both signals. Given the great test-retest reliability of SSSEP amplitude modulation with attention, SSSEPs serve as an excellent tool for studying sustained spatial attention in somatosensation.

  10. Test-retest reliability and comparison of children's reports with parents' reports of young children's fruit and vegetable preferences

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The aim of this study is to investigate the test-retest reliability of a short computerized assessment of young children's fruit (F) and vegetable (V) preferences, and to compare children's responses with their parents' responses. A paper-and-pencil F and V preference and F and V food frequency ques...

  11. Test-retest reliability of a single-channel, wireless EEG system.

    PubMed

    Rogers, Jeffrey M; Johnstone, Stuart J; Aminov, Anna; Donnelly, James; Wilson, Peter H

    2016-08-01

    Recording systems to acquire electroencephalogram (EEG) data are traditionally lab-based. However, there are shortcomings to this method, and the ease of use and portability of emerging wireless EEG technologies offer a promising alternative. A previous validity study demonstrated data derived from a single-channel, wireless system (NeuroSky ThinkGear, San Jose, California) is comparable to EEG recorded from conventional lab-based equipment. The current study evaluated the reliability of this portable system using test-retest and reliable change analyses. Relative power (RP) of delta, theta, alpha, and beta frequency bands was derived from EEG data obtained from a single electrode over FP1 in 19 healthy youth (10-17years old), 21 healthy adults (18-28years old), and 19 healthy older adults (55-79years old), during eyes-open, eyes-closed, auditory oddball, and visual n-back conditions. Intra-class correlations (ICCs) and Coefficients of Repeatability (CRs) were calculated from RP data re-collected one-day, one-week, and one-month later. Participants' levels of mood and attention were consistent across sessions. Eyes-closed resting EEG measurements using the portable device were reproducible (ICCs 0.76-0.85) at short and longer retest intervals in all three participant age groups. While still of at least fair reliability (ICCs 0.57-0.85), EEG obtained during eyes-open paradigms was less stable, and any change observed over time during these testing conditions can be interpreted utilizing the CR values provided. Combined with existing validity data, these findings encourage application of the portable EEG system for the study of brain function.

  12. Test-Retest Reliability of Rating of Perceived Exertion and Agreement With 1-Repetition Maximum in Adults.

    PubMed

    Bove, Allyn M; Lynch, Andrew D; DePaul, Samantha M; Terhorst, Lauren; Irrgang, James J; Fitzgerald, G Kelley

    2016-09-01

    Study Design Clinical measurement. Background It has been suggested that rating of perceived exertion (RPE) may be a useful alternative to 1-repetition maximum (1RM) to determine proper resistance exercise dosage. However, the test-retest reliability of RPE for resistance exercise has not been determined. Additionally, prior research regarding the relationship between 1RM and RPE is conflicting. Objectives The purpose of this study was to (1) determine test-retest reliability of RPE related to resistance exercise and (2) assess agreement between percentages of 1RM and RPE during quadriceps resistance exercise. Methods A sample of participants with and without knee pathology completed a series of knee extension exercises and rated the perceived difficulty of each exercise on a 0-to-10 RPE scale, then repeated the procedure 1 to 2 weeks later for test-retest reliability. To determine agreement between RPE and 1RM, participants completed knee extension exercises at various percentages of their 1RM (10% to 130% of predicted 1RM) and rated the perceived difficulty of each exercise on a 0-to-10 RPE scale. Percent agreement was calculated between the 1RM and RPE at each resistance interval. Results The intraclass correlation coefficient indicated excellent test-retest reliability of RPE for quadriceps resistance exercises (intraclass correlation coefficient = 0.895; 95% confidence interval: 0.866, 0.918). Overall percent agreement between RPE and 1RM was 60%, but agreement was poor within the ranges that would typically be used for training (50% 1RM for muscle endurance, 70% 1RM and greater for strength). Conclusion Test-retest reliability of perceived exertion during quadriceps resistance exercise was excellent. However, agreement between the RPE and 1RM was poor, especially in common training zones for knee extensor strengthening. J Orthop Sports Phys Ther 2016;46(9):768-774. Epub 5 Aug 2016. doi:10.2519/jospt.2016.6498.

  13. Resting-state test-retest reliability of a priori defined canonical networks over different preprocessing steps.

    PubMed

    Varikuti, Deepthi P; Hoffstaedter, Felix; Genon, Sarah; Schwender, Holger; Reid, Andrew T; Eickhoff, Simon B

    2017-04-01

    Resting-state functional connectivity analysis has become a widely used method for the investigation of human brain connectivity and pathology. The measurement of neuronal activity by functional MRI, however, is impeded by various nuisance signals that reduce the stability of functional connectivity. Several methods exist to address this predicament, but little consensus has yet been reached on the most appropriate approach. Given the crucial importance of reliability for the development of clinical applications, we here investigated the effect of various confound removal approaches on the test-retest reliability of functional-connectivity estimates in two previously defined functional brain networks. Our results showed that gray matter masking improved the reliability of connectivity estimates, whereas denoising based on principal components analysis reduced it. We additionally observed that refraining from using any correction for global signals provided the best test-retest reliability, but failed to reproduce anti-correlations between what have been previously described as antagonistic networks. This suggests that improved reliability can come at the expense of potentially poorer biological validity. Consistent with this, we observed that reliability was proportional to the retained variance, which presumably included structured noise, such as reliable nuisance signals (for instance, noise induced by cardiac processes). We conclude that compromises are necessary between maximizing test-retest reliability and removing variance that may be attributable to non-neuronal sources.

  14. MEG and EEG demonstrate similar test-retest reliability of the 40Hz auditory steady-state response.

    PubMed

    Legget, Kristina T; Hild, Allison K; Steinmetz, Sarah E; Simon, Steven T; Rojas, Donald C

    2017-04-01

    The auditory steady-state response (ASSR) is increasingly being used as a biomarker in neuropsychiatric disorders, but research investigating the test-retest reliability of this measure is needed. We previously reported ASSR reliability, measured by electroencephalography (EEG), to 40Hz amplitude-modulated white noise and click train stimuli. The purpose of the current study was to (a) assess the reliability of the MEG-measured ASSR to 40Hz amplitude-modulated white noise and click train stimuli, and (b) compare test-retest reliability between MEG and EEG measures of ASSR, which has not previously been investigated. Additionally, impact of stimulus parameter choice on reliability was assessed, by comparing responses to white noise and click train stimuli. Test-retest reliability, across sessions approximately one week apart, was assessed in 17 healthy adults. On each study day, participants completed two passive listening tasks (white noise and click train stimuli) during separate MEG and EEG recordings. Between-session correlations for evoked power and inter-trial phase coherence (ITPC) were assessed following source-space projection. Overall, the MEG-measured ASSR was significantly correlated between sessions (p<0.05, FDR corrected), suggesting acceptable test-retest reliability. Results suggest greater response reproducibility for ITPC compared to evoked responses and for click train compared to white noise stimuli, although further study is warranted. No significant differences in reliability were observed between MEG and EEG measures, suggesting they are similarly reliable. This work supports use of the ASSR as a biomarker in clinical interventions with repeated measures.

  15. Test-retest, inter- and intra-rater reliability of the flexicurve for evaluation of the spine in children

    PubMed Central

    Sedrez, Juliana A.; Candotti, Cláudia T.; Rosa, Maria I. Z.; Medeiros, Fernanda S.; Marques, Mariana T.; Loss, Jefferson F.

    2016-01-01

    Introduction: The early evaluation of the spine in children is desirable because it is at this stage of development that the greatest changes in the body structures occur. Objective: To determine the test-retest, intra- and inter-rater reliability of the Flexicurve instrument for the evaluation of spinal curvatures in children. Method: Forty children ranging from 5 to 15 years of age were evaluated by two independent evaluators using the Flexicurve to model the spine. The agreement was evaluated using Intraclass Correlation Coefficients (ICC), Standard Error of the Measurement (SEM), and Minimal Detectable Change (MDC). Results: In relation to thoracic kyphosis, the Flexicurve was shown to have excellent correlation in terms of test-retest reliability (ICC2,2=0.87) and moderate correlation in terms of intra-(ICC2,2=0.68) and inter-rater reliability (ICC2,2=0.72). In relation to lumbar lordosis, it was shown to have moderate correlation in terms of test-retest reliability (ICC2,2=0.66) and intra- (ICC2,2=0.50) and inter-rater reliability (ICC=0.56). Conclusion: This evaluation of the reliability of the Flexicurve allows its use in school screening. However, to monitor spinal curvatures in the sagittal plane in children, complementary clinical measures are necessary. Further studies are required to investigate the concurrent validity of the instrument in order to identify its diagnostic capacity. PMID:26786078

  16. Test-retest reliability of expiratory abdominal compression with a handheld dynamometer in patients with prolonged mechanical ventilation.

    PubMed

    Morino, Akira; Shida, Masahiro; Tanaka, Masashi; Sato, Kimihiro; Seko, Toshiaki; Ito, Shunsuke; Ogawa, Shunichi; Takahashi, Naoaki

    2015-07-01

    [Purpose] The present study aimed to examine the test-retest reliability of expiratory abdominal compression with a handheld dynamometer in patients with prolonged mechanical ventilation. [Subjects and Methods] We recruited 18 patients with prolonged mechanical ventilation. All patients had impaired consciousness. The mode of the ventilator was synchronized intermittent mandatory ventilation. The abdomen above the navel was vertically compressed using a handheld dynamometer in synchronization with expiration. Expiratory abdominal compression was performed two times. We measured the tidal volume during expiratory abdominal compression. There was an interval of 5 minutes between the first and second measurements. Intraclass correlation coefficient (ICC) and Bland-Altman analysis were performed to examine the test-retest reliability of expiratory abdominal compression with a handheld dynamometer. [Results] The test-retest reliability of expiratory abdominal compression was excellent (ICC(1, 1): 0.987). Bland-Altman analysis showed that there was no fixed bias and no proportional bias. [Conclusion] The findings of this study suggest that expiratory abdominal compression with a handheld dynamometer is reliable and useful for patients with respiratory failure and prolonged mechanical ventilation.

  17. Test-Retest Reliability of an Automated Infrared-Assisted Trunk Accelerometer-Based Gait Analysis System.

    PubMed

    Hsu, Chia-Yu; Tsai, Yuh-Show; Yau, Cheng-Shiang; Shie, Hung-Hai; Wu, Chu-Ming

    2016-07-23

    The aim of this study was to determine the test-retest reliability of an automated infrared-assisted, trunk accelerometer-based gait analysis system for measuring gait parameters of healthy subjects in a hospital. Thirty-five participants (28 of them females; age range, 23-79 years) performed a 5-m walk twice using an accelerometer-based gait analysis system with infrared assist. Measurements of spatiotemporal gait parameters (walking speed, step length, and cadence) and trunk control (gait symmetry, gait regularity, acceleration root mean square (RMS), and acceleration root mean square ratio (RMSR)) were recorded in two separate walking tests conducted 1 week apart. Relative and absolute test-retest reliability was determined by calculating the intra-class correlation coefficient (ICC3,1) and smallest detectable difference (SDD), respectively. The test-retest reliability was excellent for walking speed (ICC = 0.87, 95% confidence interval = 0.74-0.93, SDD = 13.4%), step length (ICC = 0.81, 95% confidence interval = 0.63-0.91, SDD = 12.2%), cadence (ICC = 0.81, 95% confidence interval = 0.63-0.91, SDD = 10.8%), and trunk control (step and stride regularity in anterior-posterior direction, acceleration RMS and acceleration RMSR in medial-lateral direction, and acceleration RMS and stride regularity in vertical direction). An automated infrared-assisted, trunk accelerometer-based gait analysis system is a reliable tool for measuring gait parameters in the hospital environment.

  18. Test-retest reliability of expiratory abdominal compression with a handheld dynamometer in patients with prolonged mechanical ventilation

    PubMed Central

    Morino, Akira; Shida, Masahiro; Tanaka, Masashi; Sato, Kimihiro; Seko, Toshiaki; Ito, Shunsuke; Ogawa, Shunichi; Takahashi, Naoaki

    2015-01-01

    [Purpose] The present study aimed to examine the test-retest reliability of expiratory abdominal compression with a handheld dynamometer in patients with prolonged mechanical ventilation. [Subjects and Methods] We recruited 18 patients with prolonged mechanical ventilation. All patients had impaired consciousness. The mode of the ventilator was synchronized intermittent mandatory ventilation. The abdomen above the navel was vertically compressed using a handheld dynamometer in synchronization with expiration. Expiratory abdominal compression was performed two times. We measured the tidal volume during expiratory abdominal compression. There was an interval of 5 minutes between the first and second measurements. Intraclass correlation coefficient (ICC) and Bland-Altman analysis were performed to examine the test-retest reliability of expiratory abdominal compression with a handheld dynamometer. [Results] The test-retest reliability of expiratory abdominal compression was excellent (ICC(1, 1): 0.987). Bland-Altman analysis showed that there was no fixed bias and no proportional bias. [Conclusion] The findings of this study suggest that expiratory abdominal compression with a handheld dynamometer is reliable and useful for patients with respiratory failure and prolonged mechanical ventilation. PMID:26311946

  19. Regional electroencephalogram (EEG) alpha power and asymmetry in older adults: a study of short-term test-retest reliability.

    PubMed

    Mathewson, Karen J; Hashemi, Ali; Sheng, Bruce; Sekuler, Allison B; Bennett, Patrick J; Schmidt, Louis A

    2015-01-01

    Although regional alpha power and asymmetry measures have been widely used as indices of individual differences in emotional processing and affective style in younger populations, there have been relatively few studies that have examined these measures in older adults. Here, we examined the short-term test-retest reliability of resting regional alpha power (7.5-12.5 Hz) and asymmetry in a sample of 38 active, community-dwelling older adults (M age = 71.2, SD = 6.5 years). Resting electroencephalogram recordings were made before and after a perceptual computer task. Pearson and intra-class correlations indicated acceptable test-retest reliability for alpha power and asymmetry measures in all regions. Interestingly, alpha asymmetry appeared to be less affected by the task than was alpha power. Findings suggest that alpha asymmetry may reflect more enduring, "trait-like" characteristics, while alpha power may reflect more "state-like" processes in older adults.

  20. Measurement of impulsive choice in rats: Same and alternate form test-retest reliability and temporal tracking

    PubMed Central

    Peterson, Jennifer R.; Hill, Catherine C.; Kirkpatrick, Kimberly

    2016-01-01

    Impulsive choice is typically measured by presenting smaller-sooner (SS) versus larger-later (LL) rewards, with biases towards the SS indicating impulsivity. The current study tested rats on different impulsive choice procedures with LL delay manipulations to assess same-form and alternate-form test-retest reliability. In the systematic-GE procedure (Green & Estle, 2003), the LL delay increased after several sessions of training; in the systematic-ER procedure (Evenden & Ryan, 1996), the delay increased within each session; and in the adjusting-M procedure (Mazur, 1987), the delay changed after each block of trials within a session based on each rat’s choices in the previous block. In addition to measuring choice behavior, we also assessed temporal tracking of the LL delays using the median times of responding during LL trials. The two systematic procedures yielded similar results in both choice and temporal tracking measures following extensive training, whereas the adjusting procedure resulted in relatively more impulsive choices and poorer temporal tracking. Overall, the three procedures produced acceptable same form test-retest reliability over time, but the adjusting procedure did not show significant alternate form test-retest reliability with the other two procedures. The results suggest that systematic procedures may supply better measurements of impulsive choice in rats. PMID:25490901

  1. Test-retest reliability of Yale Physical Activity Survey among older Mexican American adults: a pilot investigation.

    PubMed

    Pennathur, Arunkumar; Magham, Rohini; Contreras, Luis Rene; Dowling, Winifred

    2004-01-01

    The objective of the work reported in this paper is to assess test-retest reliability of Yale Physical Activity Survey Total Time, Estimated Energy Expenditure, Activity Dimension Indices, and Activities Check-list in older Mexican American men and women. A convenience-based healthy sample of 49 (42 women and 7 men) older Mexican American adults recruited from senior recreation centers aged 68 to 80 years volunteered to participate in this pilot study. Forty-nine older Mexican American adults filled out the Yale Physical Activity Survey for this study. Fifteen (12 women and 3 men) of the 49 volunteers responded twice to the Yale Physical Activity Survey after a 2-week period, and helped assess the test-retest reliability of the Yale Physical Activity Survey. Results indicate that based on a 2-week test-retest administration, the Yale Physical Activity Survey was found to have moderate (rhoI= .424, p < .05) to good reliability (rs = .789, p < .01) for physical activity assessment in older Mexican American adults who responded.

  2. Intrarater test-retest reliability of static and dynamic stability indexes measurement using the Biodex Stability System during unilateral stance.

    PubMed

    Arifin, Nooranida; Abu Osman, Noor Azuan; Wan Abas, Wan Abu Bakar

    2014-04-01

    The measurements of postural balance often involve measurement error, which affects the analysis and interpretation of the outcomes. In most of the existing clinical rehabilitation research, the ability to produce reliable measures is a prerequisite for an accurate assessment of an intervention after a period of time. Although clinical balance assessment has been performed in previous study, none has determined the intrarater test-retest reliability of static and dynamic stability indexes during dominant single stance. In this study, one rater examined 20 healthy university students (female=12, male=8) in two sessions separated by 7 day intervals. Three stability indexes--the overall stability index (OSI), anterior/posterior stability index (APSI), and medial/ lateral stability index (MLSI) in static and dynamic conditions--were measured during single dominant stance. Intraclass correlation coefficient (ICC), standard error measurement (SEM) and 95% confidence interval (95% CI) were calculated. Test-retest ICCs for OSI, APSI, and MLSI were 0.85, 0.78, and 0.84 during static condition and were 0.77, 0.77, and 0.65 during dynamic condition, respectively. We concluded that the postural stability assessment using Biodex stability system demonstrates good-to-excellent test-retest reliability over a 1 week time interval.

  3. Emotional and Behavioral Screener: Test-Retest Reliability, Inter-Rater Reliability, and Convergent Validity

    ERIC Educational Resources Information Center

    Nordness, Philip D.; Epstein, Michael H.; Cullinan, Douglas; Pierce, Corey D.

    2014-01-01

    The Emotional and Behavioral Screener (EBS) is a universal screening instrument designed to identify students whose excessive problem behaviors put them at risk of the education disability category of emotional disturbance (ED). This article reports findings from three studies that address the reliability and validity of the EBS. Studies 1 and 2…

  4. Test-retest reliability of pain-related functional brain connectivity compared with pain self-report.

    PubMed

    Letzen, Janelle E; Boissoneault, Jeff; Sevel, Landrew S; Robinson, Michael E

    2016-03-01

    Test-retest reliability, or reproducibility of results over time, is poorly established for functional brain connectivity (fcMRI) during painful stimulation. As reliability informs the validity of research findings, it is imperative to examine, especially given recent emphasis on using functional neuroimaging as a tool for biomarker development. Although proposed pain neural signatures have been derived using complex, multivariate algorithms, even the reliability of less complex fcMRI findings has yet to be reported. This study examined the test-retest reliability for fcMRI of pain-related brain regions, and self-reported pain (through visual analogue scales [VASs]). Thirty-two healthy individuals completed 3 consecutive fMRI runs of a thermal pain task. Functional connectivity analyses were completed on pain-related brain regions. Intraclass correlations were conducted on fcMRI values and VAS scores across the fMRI runs. Intraclass correlations coefficients for fcMRI values varied widely (range = -.174-.766), with fcMRI between right nucleus accumbens and medial prefrontal cortex showing the highest reliability (range = .649-.766). Intraclass correlations coefficients for VAS scores ranged from .906 to .947. Overall, self-reported pain was more reliable than fcMRI data. These results highlight that fMRI findings might be less reliable than inherently assumed and have implications for future studies proposing pain markers.

  5. Health measurement using the ICF: Test-retest reliability study of ICF codes and qualifiers in geriatric care

    PubMed Central

    Okochi, Jiro; Utsunomiya, Sakiko; Takahashi, Tai

    2005-01-01

    Background The International Classification of Functioning, Disability and Health (ICF) was published by the World Health Organization (WHO) to standardize descriptions of health and disability. Little is known about the reliability and clinical relevance of measurements using the ICF and its qualifiers. This study examines the test-retest reliability of ICF codes, and the rate of immeasurability in long-term care settings of the elderly to evaluate the clinical applicability of the ICF and its qualifiers, and the ICF checklist. Methods Reliability of 85 body function (BF) items and 152 activity and participation (AP) items of the ICF was studied using a test-retest procedure with a sample of 742 elderly persons from 59 institutional and at home care service centers. Test-retest reliability was estimated using the weighted kappa statistic. The clinical relevance of the ICF was estimated by calculating immeasurability rate. The effect of the measurement settings and evaluators' experience was analyzed by stratification of these variables. The properties of each item were evaluated using both the kappa statistic and immeasurability rate to assess the clinical applicability of WHO's ICF checklist in the elderly care setting. Results The median of the weighted kappa statistics of 85 BF and 152 AP items were 0.46 and 0.55 respectively. The reproducibility statistics improved when the measurements were performed by experienced evaluators. Some chapters such as genitourinary and reproductive functions in the BF domain and major life area in the AP domain contained more items with lower test-retest reliability measures and rated as immeasurable than in the other chapters. Some items in the ICF checklist were rated as unreliable and immeasurable. Conclusion The reliability of the ICF codes when measured with the current ICF qualifiers is relatively low. The result in increase in reliability according to evaluators' experience suggests proper education will have positive

  6. Test-retest reliability of stride time variability while dual tasking in healthy and demented adults with frontotemporal degeneration

    PubMed Central

    2011-01-01

    Background Although test-retest reliability of mean values of spatio-temporal gait parameters has been assessed for reliability while walking alone (i.e., single tasking), little is known about the test-retest reliability of stride time variability (STV) while performing an attention demanding-task (i.e., dual tasking). The objective of this study was to examine immediate test-retest reliability of STV while single and dual tasking in cognitively healthy older individuals (CHI) and in demented patients with frontotemporal degeneration (FTD). Methods Based on a cross-sectional design, 69 community-dwelling CHI (mean age 75.5 ± 4.3; 43.5% women) and 14 demented patients with FTD (mean age 65.7 ± 9.8 years; 6.7% women) walked alone (without performing an additional task; i.e., single tasking) and while counting backward (CB) aloud starting from 50 (i.e., dual tasking). Each subject completed two trials for all the testing conditions. The mean value and the coefficient of variation (CoV) of stride time while walking alone and while CB at self-selected walking speed were measured using GAITRite® and SMTEC® footswitch systems. Results ICC of mean value in CHI under both walking conditions were higher than ICC of demented patients with FTD and indicated perfect reliability (ICC > 0.80). Reliability of mean value was better while single tasking than dual tasking in CHI (ICC = 0.96 under single-task and ICC = 0.86 under dual-task), whereas it was the opposite in demented patients (ICC = 0.65 under single-task and ICC = 0.81 under dual-task). ICC of CoV was slight to poor whatever the group of participants and the walking condition (ICC < 0.20), except while dual tasking in demented patients where it was fair (ICC = 0.34). Conclusions The immediate test-retest reliability of the mean value of stride time in single and dual tasking was good in older CHI as well as in demented patients with FTD. In contrast, the variability of stride time was low in both groups of

  7. Test-retest reliability of quantitative sensory testing for mechanical somatosensory and pain modulation assessment of masticatory structures.

    PubMed

    Costa, Y M; Morita-Neto, O; de Araújo-Júnior, E N S; Sampaio, F A; Conti, P C R; Bonjardim, L R

    2017-03-01

    Assessing the reliability of medical measurements is a crucial step towards the elaboration of an applicable clinical instrument. There are few studies that evaluate the reliability of somatosensory assessment and pain modulation of masticatory structures. This study estimated the test-retest reliability, that is over time, of the mechanical somatosensory assessment of anterior temporalis, masseter and temporomandibular joint (TMJ) and the conditioned pain modulation (CPM) using the anterior temporalis as the test site. Twenty healthy women were evaluated in two sessions (1 week apart) by the same examiner. Mechanical detection threshold (MDT), mechanical pain threshold (MPT), wind-up ratio (WUR) and pressure pain threshold (PPT) were assessed on the skin overlying the anterior temporalis, masseter and TMJ of the dominant side. CPM was tested by comparing PPT before and during the hand immersion in a hot water bath. anova and intra-class correlation coefficients (ICCs) were applied to the data (α = 5%). The overall ICCs showed acceptable values for the test-retest reliability of mechanical somatosensory assessment of masticatory structures. The ICC values of 75% of all quantitative sensory measurements were considered fair to excellent (fair = 8·4%, good = 33·3% and excellent = 33·3%). However, the CPM paradigm presented poor reliability (ICC = 0·25). The mechanical somatosensory assessment of the masticatory structures, but not the proposed CPM protocol, can be considered sufficiently reliable over time to evaluate the trigeminal sensory function.

  8. Test-Retest Reliability of an Automated Infrared-Assisted Trunk Accelerometer-Based Gait Analysis System

    PubMed Central

    Hsu, Chia-Yu; Tsai, Yuh-Show; Yau, Cheng-Shiang; Shie, Hung-Hai; Wu, Chu-Ming

    2016-01-01

    The aim of this study was to determine the test-retest reliability of an automated infrared-assisted, trunk accelerometer-based gait analysis system for measuring gait parameters of healthy subjects in a hospital. Thirty-five participants (28 of them females; age range, 23–79 years) performed a 5-m walk twice using an accelerometer-based gait analysis system with infrared assist. Measurements of spatiotemporal gait parameters (walking speed, step length, and cadence) and trunk control (gait symmetry, gait regularity, acceleration root mean square (RMS), and acceleration root mean square ratio (RMSR)) were recorded in two separate walking tests conducted 1 week apart. Relative and absolute test-retest reliability was determined by calculating the intra-class correlation coefficient (ICC3,1) and smallest detectable difference (SDD), respectively. The test-retest reliability was excellent for walking speed (ICC = 0.87, 95% confidence interval = 0.74–0.93, SDD = 13.4%), step length (ICC = 0.81, 95% confidence interval = 0.63–0.91, SDD = 12.2%), cadence (ICC = 0.81, 95% confidence interval = 0.63–0.91, SDD = 10.8%), and trunk control (step and stride regularity in anterior-posterior direction, acceleration RMS and acceleration RMSR in medial-lateral direction, and acceleration RMS and stride regularity in vertical direction). An automated infrared-assisted, trunk accelerometer-based gait analysis system is a reliable tool for measuring gait parameters in the hospital environment. PMID:27455281

  9. Test-retest reliability and predictors of unreliable reporting for a sexual behavior questionnaire for U.S. men.

    PubMed

    Nyitray, Alan G; Harris, Robin B; Abalos, Andrew T; Nielson, Carrie M; Papenfuss, Mary; Giuliano, Anna R

    2010-12-01

    Accurate knowledge about human sexual behaviors is important for increasing our understanding of human sexuality; however, there have been few studies assessing the reliability of sexual behavior questionnaires designed for community samples of adult men. A test-retest reliability study was conducted on a questionnaire completed by 334 men who had been recruited in Tucson, Arizona. Reliability coefficients and refusal rates were calculated for 39 non-sexual and sexual behavior questionnaire items. Predictors of unreliable reporting for lifetime number of female sexual partners were also assessed. Refusal rates were generally low, with slightly higher refusal rates for questions related to immigration, income, the frequency of sexual intercourse with women, lifetime number of female sexual partners, and the lifetime number of male anal sex partners. Kappa and intraclass correlation coefficients were substantial or almost perfect for all non-sexual and sexual behavior items. Reliability dropped somewhat, but was still substantial, for items that asked about household income and the men's knowledge of their sexual partners' health, including abnormal Pap tests and prior sexually transmitted diseases (STD). Age and lifetime number of female sexual partners were independent predictors of unreliable reporting while years of education was inversely associated with unreliable reporting. These findings among a community sample of adult men are consistent with other test-retest reliability studies with populations of women and adolescents.

  10. A test-retest dataset for assessing long-term reliability of brain morphology and resting-state brain activity.

    PubMed

    Huang, Lijie; Huang, Taicheng; Zhen, Zonglei; Liu, Jia

    2016-03-15

    We present a test-retest dataset for evaluation of long-term reliability of measures from structural and resting-state functional magnetic resonance imaging (sMRI and rfMRI) scans. The repeated scan dataset was collected from 61 healthy adults in two sessions using highly similar imaging parameters at an interval of 103-189 days. However, as the imaging parameters were not completely identical, the reliability estimated from this dataset shall reflect the lower bounds of the true reliability of sMRI/rfMRI measures. Furthermore, in conjunction with other test-retest datasets, our dataset may help explore the impact of different imaging parameters on reliability of sMRI/rfMRI measures, which is especially critical for assessing datasets collected from multiple centers. In addition, intelligence quotient (IQ) was measured for each participant using Raven's Advanced Progressive Matrices. The data can thus be used for purposes other than assessing reliability of sMRI/rfMRI alone. For example, data from each single session could be used to associate structural and functional measures of the brain with the IQ metrics to explore brain-IQ association.

  11. A test-retest dataset for assessing long-term reliability of brain morphology and resting-state brain activity

    PubMed Central

    Huang, Lijie; Huang, Taicheng; Zhen, Zonglei; Liu, Jia

    2016-01-01

    We present a test-retest dataset for evaluation of long-term reliability of measures from structural and resting-state functional magnetic resonance imaging (sMRI and rfMRI) scans. The repeated scan dataset was collected from 61 healthy adults in two sessions using highly similar imaging parameters at an interval of 103–189 days. However, as the imaging parameters were not completely identical, the reliability estimated from this dataset shall reflect the lower bounds of the true reliability of sMRI/rfMRI measures. Furthermore, in conjunction with other test-retest datasets, our dataset may help explore the impact of different imaging parameters on reliability of sMRI/rfMRI measures, which is especially critical for assessing datasets collected from multiple centers. In addition, intelligence quotient (IQ) was measured for each participant using Raven’s Advanced Progressive Matrices. The data can thus be used for purposes other than assessing reliability of sMRI/rfMRI alone. For example, data from each single session could be used to associate structural and functional measures of the brain with the IQ metrics to explore brain-IQ association. PMID:26978040

  12. Internal consistency and test-retest reliability of an instrumented functional reaching task using wireless electromyographic sensors.

    PubMed

    Varghese, Rini; Hui-Chan, Christina W Y; Wang, Edward; Bhatt, Tanvi

    2014-10-01

    The purpose of this study was to establish the internal consistency and test-retest reliability of the electromyographic and accelerometric data sampled from the prime movers of the dominant arm during an antigravity, within-arm's length stand-reaching task without trunk restraint. Ten healthy young adults participated in two experimental sessions, approximately 7-10days apart. During each session, subjects performed 15 trials of both a flexion- and an abduction-reaching task. Surface EMG and acceleration using wireless sensors were sampled from the anterior and middle deltoid. Reliability was established using Cronbach's alpha, intraclass correlation coefficients (ICC 2, k) and standard error of measurements (SEM) for electromyographic reaction time, burst duration and normalized amplitude along with peak acceleration. Results indicated high degrees of inter-trial and test-retest reliability for flexion (Cronbach's α range=0.92-0.99; ICC range=0.82-0.92) as well as abduction (Cronbach's α range=0.94-0.99; ICC range=0.81-0.94) reaching. The SEM associated with response variables for flexion and abduction ranged from 1.55-3.26% and 3.33-3.95% of means, respectively. Findings from this study revealed that electromyographic and accelerometric data collected from prime movers of the arm during the relatively functional stand-reaching task were highly reproducible. Given its high reliability and portability, the proposed test could have applications in clinical and laboratory settings to quantify upper limb function.

  13. Test-Retest Reliability and Reproducibility of Laser- versus Contact-Displacement Sensors in Mechanomyography: Implications for Musculoskeletal Research.

    PubMed

    Seidl, Laura; Tosovic, Danijel; Brown, J Mark

    2017-04-01

    Whole muscle mechanomyography (MMG) has gained considerable interest in recent years for its ability to noninvasively determine muscle contractile properties (ie, contraction time [Tc], half-relaxation time [1/2Tr], and maximal displacement [Dmax)]). The aim of this study was to evaluate the test-retest reliability of two fairly novel MMG transducers: a laser-displacement sensor (LDS) and contact-displacement sensor (CDS). MMG was conducted on the rectus femoris muscle of 30 healthy individuals on 4 separate occasions. Test-retest reliability was quantified using intraclass correlation coefficients (ICCs). Both sensors were reliable for time-derived parameters Tc (ICCs, 0.85-0.88) and 1/2Tr (0.77-0.89), with Dmax identified as the most reproducible parameter (0.89-0.94). The 2 sensors produced similar Tc and Dmax measures, although significant (P < .05) systematic bias was identified with the CDS recording higher mean values, on average. However, these differences may not be considered clinically significant. The wide limits of agreement identified between 1/2Tr measures (-19.0 ms and 25.2 ms) are considered unreliable from a clinical perspective. Overall, MMG demonstrated good-to-excellent reliability for the assessment of muscle contractile properties with no significant differences identified between sessions, thus further validating its applicability as a noninvasive measure of muscle contractile properties.

  14. Test-retest reliability of fMRI during nonverbal semantic decisions in moderate-severe nonfluent aphasia patients

    PubMed Central

    Kurland, Jacquie; Naeser, Margaret A.; Baker, Errol H.; Doron, Karl; Martin, Paula I.; Seekins, Heidi E.; Bogdan, Andrew; Renshaw, Perry; Yurgelun-Todd, Deborah

    2005-01-01

    Cortical reorganization in poststroke aphasia is not well understood. Few studies have investigated neural mechanisms underlying language recovery in severe aphasia patients, who are typically viewed as having a poor prognosis for language recovery. Although test-retest reliability is routinely demonstrated during collection of language data in single-subject aphasia research, this is rarely examined in fMRI studies investigating the underlying neural mechanisms in aphasia recovery. The purpose of this study was to acquire fMRI test-retest data examining semantic decisions both within and between two aphasia patients. Functional MRI was utilized to image individuals with chronic, moderate-severe nonfluent aphasia during nonverbal, yes/no button-box semantic judgments of iconic sentences presented in the Computer-assisted Visual Communication (C-ViC) program. We investigated the critical issue of intra-subject reliability by exploring similarities and differences in regions of activation during participants’ performance of identical tasks twice on the same day. Each participant demonstrated high intra-subject reliability, with response decrements typical of task familiarity. Differences between participants included greater left hemisphere perilesional activation in the individual with better response to C-ViC training. This study provides fMRI reliability in chronic nonfluent aphasia, and adds to evidence supporting differences in individual cortical reorganization in aphasia recovery. PMID:15706052

  15. Between-day test-retest reliability of gait variability in older individuals improves with a familiarization trial.

    PubMed

    Hamacher, Dennis; Hamacher, Daniel; Krowicki, Martin; Schega, Lutz

    2017-04-01

    Gait variability is an important measure in clinical settings to diagnose older individuals with fall risk. This study examines whether a familiarization trial improves test-retest reliability of gait variability. Twenty-two older participants walked twice at 1 day and twice 7 days later. The standard deviations of stride length, swing time, stance time, stride time and minimum foot clearance were calculated. The test-retest reliability of (1) between-day comparison of the first trials and (2) between-day comparison of the second trials of all gait variability measures was quantified with the intraclass-correlation coefficient (ICC), the smallest detectable differences (SDD) and the bias and the limits of agreement (LoA). The between-day comparison of the second trials per day showed higher ICC values, lower LoA values and lower SDD values in all analyzed parameters. Our data suggest that the reliability of gait variability in an older population can be considerably improved just with the aid of one familiarization trial.

  16. Test-retest reliabilities of hand-held dynamometer for lower-limb muscle strength in intellectual disabilities.

    PubMed

    Wuang, Yee-Pay; Chang, Jyh-Jong; Wang, Min-Hung; Lin, Hsiu-Ching

    2013-08-01

    The primary purpose of this study was to investigate the test-retest reliabilities of hand-held dynamometer (HDD) for measuring lower-limb muscle strength in intellectual disabilities (ID). The other purposes were to: (1) compare the lower-limb muscle strength between children with and without ID; (2) probe the relationship between the muscle forces and agility performance in ID; and (3) explore the factors associated with muscle strength in ID. Sixty-one participants (30 boys and 31 girls; mean age=14.1 ± 3.3 year) were assessed by the HDD using a "make" test. The comparative group consisted of 63 typically developing children (33 boys and 30 girls; mean age=14.9 ± 2.1 year). The ID group demonstrated lower muscle groups than in typically developing group. Except for the ankle plantarflexors (ICC=0.69, SEM=0.72), test-retest analysis showed good intrarater reliability with ICC ranging from 0.81 to 0.96, and intrarater SEM values ranged from 0.40 to 0.57. The HDD has the potential to be a reliable tool for strength measurement in ID. Muscle strength was positively related to agility performance. Regression analysis indicated that height, weight, BMI, and activity level were significant predictors of muscle strength in ID.

  17. Computerized Dual-Task Testing of Gait and Visuospatial Cognitive Functions; Test-Retest Reliability and Validity

    PubMed Central

    Szturm, Tony J.; Sakhalkar, Vedant S.; Kanitkar, Anuprita; Nankar, Mayur

    2017-01-01

    The common occurrence of age decline in mobility and cognition does cause a decrease in the level of physical activity and an increased falls risk. Consequently, dual -task (DT) assessment that simultaneously addresses both mobility skills and cognitive functions are important because, continued difficulties and fall injuries will have a sizable impact in this population. The first objective of the present study was to assess test-retest reliability of a computerized DT treadmill walking protocol and concurrent outcome measures of gait and visuospatial executive function in a group of healthy older adults. Secondly, discriminative validity was evaluated by examining the effect of DT conditions (single task vs. dual-task) on; (a) spatiotemporal gait measures (average and coefficient of variation) and (b) visuomotor and visuospatial executive performance measures. Twenty-five community-dwelling individuals median age 65 (range 61–67) were recruited from a Fitness Facility. Participants performed a computerized visuomotor tracking task and a visuospatial executive game task in standing and while treadmill walking. Testing was conducted on two occasions, 1 week apart. Moderate to high test-retest reliability (ICC values of 0.65–0.88) were observed for spatiotemporal gait variables. No significant differences between the group means were observed between test periods in any gait variable. Moderate test-retest reliability (ICC values of 0.6–0.65) was observed for measures of visuomotor and visuospatial executive performance during treadmill walking. Significant DT effects were observed for both spatiotemporal gait variables and visuospatial executive performance measures. This study demonstrates the reliability and reproducibility of the computer-based assessment tool for dual task treadmill walking. The high to moderate ICC values and the lack of systematic errors in the measures indicate that this tool has the ability to repeatedly record reliable data from

  18. The test-retest reliability of the latent construct of executive function depends on whether tasks are represented as formative or reflective indicators.

    PubMed

    Willoughby, Michael T; Kuhn, Laura J; Blair, Clancy B; Samek, Anya; List, John A

    2016-07-29

    This study investigates the test-retest reliability of a battery of executive function (EF) tasks with a specific interest in testing whether the method that is used to create a battery-wide score would result in differences in the apparent test-retest reliability of children's performance. A total of 188 4-year-olds completed a battery of computerized EF tasks twice across a period of approximately two weeks. Two different approaches were used to create a score that indexed children's overall performance on the battery-i.e., (1) the mean score of all completed tasks and (2) a factor score estimate which used confirmatory factor analysis (CFA). Pearson and intra-class correlations were used to investigate the test-retest reliability of individual EF tasks, as well as an overall battery score. Consistent with previous studies, the test-retest reliability of individual tasks was modest (rs ≈ .60). The test-retest reliability of the overall battery scores differed depending on the scoring approach (rmean = .72; rfactor_score = .99). It is concluded that the children's performance on individual EF tasks exhibit modest levels of test-retest reliability. This underscores the importance of administering multiple tasks and aggregating performance across these tasks in order to improve precision of measurement. However, the specific strategy that is used has a large impact on the apparent test-retest reliability of the overall score. These results replicate our earlier findings and provide additional cautionary evidence against the routine use of factor analytic approaches for representing individual performance across a battery of EF tasks.

  19. Test-Retest Reliability and Convergent Validity of a Computer Based Hand Function Test Protocol in People with Arthritis

    PubMed Central

    Srikesavan, Cynthia S.; Shay, Barbara; Szturm, Tony

    2015-01-01

    Objectives: A computer based hand function assessment tool has been developed to provide a standardized method for quantifying task performance during manipulations of common objects/tools/utensils with diverse physical properties and grip/grasp requirements for handling. The study objectives were to determine test-retest reliability and convergent validity of the test protocol in people with arthritis. Methods: Three different object manipulation tasks were evaluated twice in forty people with rheumatoid arthritis (RA) or hand osteoarthritis (HOA). Each object was instrumented with a motion sensor and moved in concert with a computer generated visual target. Self-reported joint pain and stiffness levels were recorded before and after each task. Task performance was determined by comparing the object movement with the computer target motion. This was correlated with grip strength, nine hole peg test, Disabilities of Arm, Shoulder, and Hand (DASH) questionnaire, and the Health Assessment Questionnaire (HAQ) scores. Results: The test protocol indicated moderate to high test-retest reliability of performance measures for three manipulation tasks, intraclass correlation coefficients (ICCs) ranging between 0.5 to 0.84, p<0.05. Strength of association between task performance measures with self- reported activity/participation composite scores was low to moderate (Spearman rho <0.7). Low correlations (Spearman rho < 0.4) were observed between task performance measures and grip strength; and between three objects’ performance measures. Significant reduction in pain and joint stiffness (p<0.05) was observed after performing each task. Conclusion: The study presents initial evidence on the test retest reliability and convergent validity of a computer based hand function assessment protocol in people with rheumatoid arthritis or hand osteoarthritis. The novel tool objectively measures overall task performance during a variety of object manipulation tasks done by tracking a

  20. Test-retest reliability and gender differences in the sexual discounting task among cocaine-dependent individuals.

    PubMed

    Johnson, Matthew W; Bruner, Natalie R

    2013-08-01

    The Sexual Discounting Task uses the delay discounting framework to examine sexual HIV risk behavior. Previous research showed task performance to be significantly correlated with self-reported HIV risk behavior in cocaine dependence. Test-retest reliability and gender differences had remained unexamined. The present study examined the test-retest reliability of the Sexual Discounting Task. Cocaine-dependent individuals (18 men, 13 women) completed the task in two laboratory visits ∼7 days apart. Participants selected photographs of individuals with whom they were willing to have casual sex. Among these, participants identified the individual most (and least) likely to have a sexually transmitted infection (STI), and the individual with whom he or she most (and least) wanted to have sex. In reference to these individuals, participants rated their likelihood of having unprotected sex versus waiting to have sex with a condom, at various delays. A money delay discounting task was also completed at the first visit. Significant differences in discounting among partner conditions were shown. Differential stability was demonstrated by significant, positive correlations between test and retest for all four partner conditions. Absolute stability was demonstrated by statistical equivalence tests between test and retest, and also supported by a lack of significant differences between test and retest. Men generally discounted significantly more than women for sexual outcomes but not money. Results suggest the Sexual Discounting Task to be a reliable measure in cocaine-dependent individuals, which supports its use as a repeated measure in clinical research, for example, studies examining acute drug effects on sexual risk and the effects of addiction treatment and HIV prevention interventions on sexual risk.

  1. A test-retest reliability analysis of diffusion measures of white matter tracts relevant for cognitive control.

    PubMed

    Boekel, W; Forstmann, B U; Keuken, M C

    2017-01-01

    Recent efforts to replicate structural brain-behavior correlations have called into question the replicability of structural brain measures used in cognitive neuroscience. Here, we report an evaluation of test-retest reliability of diffusion tensor imaging (DTI) measures, including fractional anisotropy, mean diffusivity, axial diffusivity, and radial diffusivity, in several white matter tracts previously shown to be involved in cognitive control. In a data set consisting of 34 healthy participants scanned twice on a single day, we observe overall stability of DTI measures. This stability remained in a subset of participants who were also scanned a third time on the same day as well as in a 2-week follow-up session. We conclude that DTI measures in these tracts show relative stability, and that alternative explanations for the recent failures of replication must be considered.

  2. Test-retest reliability of motor evoked potentials (MEPs) at the submental muscle group during volitional swallowing.

    PubMed

    Doeltgen, Sebastian H; Ridding, Michael C; O'Beirne, Greg A; Dalrymple-Alford, John; Huckabee, Maggie-Lee

    2009-03-30

    Motor evoked potentials (MEPs) recorded from pharyngeal and anterior hyo-mandibular (submental) muscles at rest have been used to evaluate treatment effects on neural pathways underlying swallowing. This study documents a novel methodological approach of recording reliable intra- and inter-session MEPs at the submental muscle group during task-related volitional swallowing. MEPs were elicited by single-pulse transcranial magnetic stimulation (TMS), triggered by a custom-made system when a pre-set level of surface electromyographic activity in the target muscles was breached. Fifteen MEPs were recorded during each of four sessions. Intraclass correlation coefficients (ICCs) were used to assess test-retest reliability within and across sessions for blocks of 3, 5, 10 and 15 trials. Highly reliable intra-session reliability was achieved, maximal for blocks of five trials (0.915). Inter-session reliability varied between 0.474 (three trials per block) and 0.909 (10 trials per block). Surface electromyography-triggered TMS allows reliable measurement of MEP amplitude at the submental muscle group within and across sessions when muscles are pre-activated during volitional swallowing. This methodology will be useful for future investigations on the effects of pathology and modulation of swallowing neural pathways.

  3. Test-retest reliability of muscle vibration effects on postural sway.

    PubMed

    Kiers, Henri; Brumagne, Simon; van Dieën, Jaap; Vanhees, Luc

    2014-01-01

    The effect of alterations in the processing of proprioceptive signals, on postural control, has been studied using muscle vibration effects. However, reliability and agreement of muscle vibration have still to be addressed. This study aimed to assess intra- and interday reliability and agreement of vibration effects of lumbar paraspinal and triceps surae muscles in a non-selected sample of 20 subjects, standing on solid surface and on foam. We used mean position and velocity of Centre of Pressure (CoP), during and after vibration to quantify the effect of muscle vibration. We also calculated the ratio of vibration effects on the lumbar paraspinal and triceps surae muscles (proprioceptive weighting). Displacement of the CoP during vibration showed good reliability (ICCs>0.6), and proprioceptive weighting of displacement fair to good reliability (0.52-0.73). Agreement measures were poor, with most CV's ranging between 18% and 36%. Change in CoP velocity appeared not to be reliable. Balance recovery, when based on CoP position and calculated a short period after cessation of vibration, showed good reliability. According to this study, displacement during vibration, proprioceptive weighting and selected recovery variables are the most reliable indicators of the response to muscle vibration.

  4. Test-retest reliability of a self-administered musculoskeletal symptoms and job factors questionnaire used in ergonomics research.

    PubMed

    Rosecrance, John C; Ketchen, Kelly J; Merlino, Linda A; Anton, Dan C; Cook, Tom M

    2002-09-01

    The purpose of this study was to investigate the test-retest reliability of questionnaire items related to musculoskeletal symptoms and the reliability of specific job factors. The type of questionnaire items described in the present study have been used by several investigators to assess symptoms of musculoskeletal disorders and problematic job factors among workers from a variety of occupations. Employees at a plastics molding facility were asked to complete an initial symptom and jobs factors questionnaire and then complete an identical questionnaire either two or four weeks later. Of the 216 employees participating in the initial round, 99 (45.8%) agreed to participate in the retest portion of the study. The kappa coefficient was used to determine repeatability for categorical outcomes. The majority of the kappa coefficients for the 58 questionnaire items were above 0.50 but ranged between 0.13 and 1.00. The section of the questionnaire having the highest kappa coefficients was the section related to hand symptoms. Interval lengths of two and four weeks between the initial test and retest were found to be equally sufficient in terms of reliability. The results indicated that the symptom and job factors questionnaire is reliable for use in epidemiologic studies. Like all measurement instruments, the reliability of musculoskeletal questionnaires must be established before drawing conclusions from studies that employ the instrument.

  5. Response process and test-retest reliability of the Context Assessment for Community Health tool in Vietnam.

    PubMed

    Duc, Duong M; Bergström, Anna; Eriksson, Leif; Selling, Katarina; Thi Thu Ha, Bui; Wallin, Lars

    2016-01-01

    Background The recently developed Context Assessment for Community Health (COACH) tool aims to measure aspects of the local healthcare context perceived to influence knowledge translation in low- and middle-income countries. The tool measures eight dimensions (organizational resources , community engagement, monitoring services for action, sources of knowledge, commitment to work, work culture, leadership, and informal payment) through 49 items. Objective The study aimed to explore the understanding and stability of the COACH tool among health providers in Vietnam. Designs To investigate the response process, think-aloud interviews were undertaken with five community health workers, six nurses and midwives, and five physicians. Identified problems were classified according to Conrad and Blair's taxonomy and grouped according to an estimation of the magnitude of the problem's effect on the response data. Further, the stability of the tool was examined using a test-retest survey among 77 respondents. The reliability was analyzed for items (intraclass correlation coefficient (ICC) and percent agreement) and dimensions (ICC and Bland-Altman plots). Results In general, the think-aloud interviews revealed that the COACH tool was perceived as clear, well organized, and easy to answer. Most items were understood as intended. However, seven prominent problems in the items were identified and the content of three dimensions was perceived to be of a sensitive nature. In the test-retest survey, two-thirds of the items and seven of eight dimensions were found to have an ICC agreement ranging from moderate to substantial (0.5-0.7), demonstrating that the instrument has an acceptable level of stability. Conclusions This study provides evidence that the Vietnamese translation of the COACH tool is generally perceived to be clear and easy to understand and has acceptable stability. There is, however, a need to rephrase and add generic examples to clarify some items and to further

  6. Test-Retest Reliability of Physiological and Performance Responses to 120 Minutes of Simulated Soccer Match Play.

    PubMed

    Harper, Liam D; Hunter, Robert; Parker, Paul; Goodall, Stuart; Thomas, Kevin; Howatson, Glyn; West, Daniel J; Stevenson, Emma; Russell, Mark

    2016-11-01

    Harper, LD, Hunter, R, Parker, P, Goodall, S, Thomas, K, Howatson, G, West, DJ, Stevenson, E, and Russell, M. Test-retest reliability of physiological and performance responses to 120 minutes of simulated soccer match play. J Strength Cond Res 30(11): 3178-3186, 2016-This study investigated the test-retest reliability of physiological and performance responses to 120 minutes (90 minutes plus 30 minutes extra-time [ET]) of the soccer match simulation (SMS). Ten university-standard soccer players completed the SMS on 2 occasions under standardized conditions. Capillary and venous blood was taken pre-exercise, at half-time, and at 90 and 120 minutes, with further capillary samples taken every 15 minutes throughout the exercise. Core temperature (Tcore), physical (20- and 15-m sprint speeds and countermovement jump height), and technical (soccer dribbling) performance was also assessed during each trial. All variables except blood lactate demonstrated no systematic bias between trials (p > 0.05). During the last 15 minutes of ET, test-rest reliability (coefficient of variation %, Pearson's r, respectively) was moderate to strong for 20-m sprint speed (3.5%, 0.71), countermovement jump height (4.9%, 0.90), dribble speed (2.8%, 0.90), and blood glucose (7.1%, 0.93), and very strong for Tcore (1.2%, 0.99). Moderate reliability was demonstrated for 15-m sprint speed (4.6%, 0.36), dribble precision (11.5%, 0.30), plasma insulin (10.3%, 0.96), creatine kinase ([CK] 28.1%, 0.38), interleukin-6 (24%, 0.99), nonesterified fatty acids ([NEFA] 13.2%, 0.73), glycerol (12.5%, 0.86), and blood lactate (18.6%, 0.79). In the last 15 minutes of ET, concentrations of blood glucose and lactate and sprint and jump performances were reduced, whereas Tcore, NEFA, glycerol, and CK concentrations were elevated (p ≤ 0.05). The SMS is a reliable protocol for measuring responses across the full 120 minutes of soccer-specific exercise. Deleterious effects on performance and physiological

  7. Test-retest reliability and factor stability of the behavioral evaluation for epidemiology studies test battery.

    PubMed

    Echeverria, Diana; Heyer, Nicholas J; Bittner, Alvan C; Rohlman, Diane; Woods, James S

    2002-12-01

    The Behavioral Evaluation for Epidemiology Studies test battery uses touch-screen technology and novel methodologies to enhance neurobehavioral assessment. Scores generally show differential stability from the first trial with individual test reliabilities at or above .80 when normalized to a 3-min. administration. Six highly reliable (r > or = .87) factors were identified that cover functions known to be sensitive to neurotoxicants and physical exposures. These results strongly support recommendation of the new test battery for use in repeated-measures epidemiologic studies where first trial stability is desired.

  8. The Concurrent Validity and Test-Retest Reliability of a Visuospatial Working Memory Task

    ERIC Educational Resources Information Center

    Hockey, A.; Geffen, G.

    2004-01-01

    To determine whether the visuospatial n-back working memory task is a reliable and valid measure of cognitive processes believed to underlie intelligence, this study compared the reaction times and accuracy of performance of 70 participants, with performance on the Multidimensional Aptitude Battery (MAB). Testing was conducted over two sessions…

  9. Test-Retest Reliability of Respiratory Resistance Measured with the Airflow Perturbation Device

    ERIC Educational Resources Information Center

    Gallena, Sally K.; Solomon, Nancy Pearl; Johnson, Arthur T.; Vossoughi, Jafar; Tian, Wei

    2014-01-01

    Purpose: In this study, the authors aimed to determine reliability of the airflow perturbation device (APD) to measure respiratory resistance within and across sessions during resting tidal (RTB) and postexercise breathing in healthy athletes, and during RTB across trials within a session in athletes with paradoxical vocal fold motion (PVFM)…

  10. Test-retest reliability and sensitivity of the Concept2 Dyno dynamometer: practical applications.

    PubMed

    Bampouras, Theodoros M; Marrin, Kelly; Sankey, Sean P; Jones, Paul A

    2014-05-01

    Strength assessment is often part of the objective periodical observation of teams, squads, or large groups of athletes. Equipment that provides assessment that is mobile and is easy to use will reduce the impact on the athletes' training and competitive calendar. However, any equipment used must be reliable to allow accurate monitoring of performance. The aim of this study was to examine the reliability of the Concept2 Dyno dynamometer. Forty-six competitive athletes (males: n = 36, age 23.3 ± 6.8 years, height 1.80 ± 0.09 m, body mass 82.3 ± 15.6 kg; females, n = 10, age 20.7 ± 1.4 years, height 1.65 ± 0.09 m, body mass 62.7 ± 11.8 kg), with a strength training background of more than 2 years, performed a familiarization session and 3 experimental sessions with 1 week intervening each. Each experimental session consisted of 3 maximal efforts of seated chest press (CPress), seated row (SRow), and seated leg press (LPress) exercises. Reliability was assessed examining systematic bias, intraclass correlation coefficient, coefficient of variation (CV), and 95% limits of agreement (95% LoA) between sessions. No systematic bias was found for any of the exercises. Intraclass correlation coefficients were high (0.89-0.98) with relatively low CV (6.2-4.3%). Finally, 95% LoA indicated that subsequent testing could underestimate by a factor of 0.87 or overestimate by a factor of 1.17, on average. These results indicate that Concept2 Dyno dynamometer is reliable and can be used in the field to efficiently monitor strength performance. Coaches and researchers should use "analytical goals" to help decide as to the use of Concept2 Dyno for their purposes.

  11. Test-retest reliability and the minimal detectable change for achilles tendon length: a panoramic ultrasound assessment.

    PubMed

    Ryan, Eric D; Rosenberg, Joseph G; Scharville, Michael J; Sobolewski, Eric J; Thompson, Brennan J; King, Gilbert E

    2013-12-01

    The purpose of the present study was to examine test-retest reliability and minimal detectable change (MDC) values for Achilles tendon (AT) length determined using panoramic ultrasound (US) imaging. Seventeen men (age = 21.0 ± 2.3 y) visited the laboratory on two separate days, where AT length was examined along the mid-longitudinal axis of the right lower leg with a portable B-mode panoramic US device. These measures were found to have acceptable reliability with intra-class correlation coefficient (ICC) and standard error of measurement (SEM) values of 0.954 and 4.43 mm (SEM% of the mean = 2.37%), respectively. In addition, the MDC for the panoramic US assessment of AT length was 12.27 mm (MDC% of the mean = 6.57%). These findings suggest that panoramic US imaging is a reliable technique for detection of clinically relevant changes in AT length and may therefore be a practical and time-efficient clinical tool for future studies examining AT length in vivo.

  12. Test-retest reliability of a battery of field-based health-related fitness measures for adolescents.

    PubMed

    Lubans, David R; Morgan, Philip; Callister, Robin; Plotnikoff, Ronald C; Eather, Narelle; Riley, Nicholas; Smith, Chris J

    2011-04-01

    The main aim of this study was to determine the test-retest reliability of existing tests of health-related fitness. Participants (mean age 14.8 years, s = 0.4) were 42 boys and 26 girls who completed the study assessments on two occasions separated by one week. The following tests were conducted: bioelectrical impedance analysis (BIA) to calculate percent body fat, leg dynamometer, 90° push-up, 7-stage sit-up, and wall squat tests. Intra-class correlation (ICC), paired samples t-tests, and typical error expressed as a coefficient of variation were calculated. The mean percent body fat intra-class correlation coefficient was similar for boys (ICC = 0.95) and girls (ICC = 0.93), but the mean coefficient of variation was considerably higher for boys than girls (22.2% vs. 12.2%). The boys' coefficients of variation for the tests of muscular fitness ranged from 9.0% for the leg dynamometer test to 26.5% for the timed wall squat test. The girls' coefficients of variation ranged from 17.1% for the sit-up test to 21.4% for the push-up test. Although the BIA machine produced reliable estimates of percent body fat, the tests of muscular fitness resulted in high systematic error, suggesting that these measures may require an extensive familiarization phase before the results can be considered reliable.

  13. Test-Retest Reliability of a New Medial Temporal Atrophy Morphological Metric

    PubMed Central

    Duchesne, Simon; Valdivia, Fernando; Mouiha, Abderazzak; Robitaille, Nicolas

    2012-01-01

    Clinicians and researchers alike are in need of quantitative and robust measurement tools to assess medial temporal lobe atrophy (MTA) due to Alzheimer's disease (AD). We recently proposed a morphological metric, extracted from T1-weighted magnetic resonance images (MRI), to track and estimate MTA in cohorts of controls, AD, and mild cognitive impairment subjects, at high-risk of progression to dementia. In this paper, we investigated its reliability through analysis of within-session scan/repeat images and scan/rescans from large multicenter studies. In total, we used MRI data from 1051 subjects recruited at over 60 centers. We processed the data identically and calculated our metric for each individual, based on the concept of distance in a high-dimensional space of intensity and shape characteristics. Over 759 subjects, the scan/repeat change in the mean was 1.97% (SD: 21.2%). Over three subjects, the scan/rescan change in the mean was 0.89% (SD: 22.1%). At this level, the minimum trial size required to detect this difference is 68 individuals for both samples. Our scan/repeat and scan/rescan results demonstrate that our MTA assessment metric shows high reliability, a necessary component of validity. PMID:23024883

  14. Reliability of graph analysis of resting state fMRI using test-retest dataset from the Human Connectome Project.

    PubMed

    Termenon, M; Jaillard, A; Delon-Martin, C; Achard, S

    2016-11-15

    The exploration of brain networks with resting-state fMRI (rs-fMRI) combined with graph theoretical approaches has become popular, with the perspective of finding network graph metrics as biomarkers in the context of clinical studies. A preliminary requirement for such findings is to assess the reliability of the graph based connectivity metrics. In previous test-retest (TRT) studies, this reliability has been explored using intraclass correlation coefficient (ICC) with heterogeneous results. But the issue of sample size has not been addressed. Using the large TRT rs-fMRI dataset from the Human Connectome Project (HCP), we computed ICCs and their corresponding p-values (applying permutation and bootstrap techniques) and varied the number of subjects (from 20 to 100), the scan duration (from 400 to 1200 time points), the cost and the graph metrics, using the Anatomic-Automatic Labelling (AAL) parcellation scheme. We quantified the reliability of the graph metrics computed both at global and regional level depending, at optimal cost, on two key parameters, the sample size and the number of time points or scan duration. In the cost range between 20% to 35%, most of the global graph metrics are reliable with 40 subjects or more with long scan duration (14min 24s). In large samples (for instance, 100 subjects), most global and regional graph metrics are reliable for a minimum scan duration of 7min 14s. Finally, for 40 subjects and long scan duration (14min 24s), the reliable regions are located in the main areas of the default mode network (DMN), the motor and the visual networks.

  15. Frontal EEG theta/beta ratio as an electrophysiological marker for attentional control and its test-retest reliability.

    PubMed

    Angelidis, Angelos; van der Does, Willem; Schakel, Lemmy; Putman, Peter

    2016-12-01

    A robust finding is that resting-state frontal theta/beta ratio (TBR), a spontaneous electroencephalographic (EEG) frequency band parameter, is increased in attention-deficit/hyperactivity disorder. Accumulating evidence suggests that TBR might also provide an objective marker of executive cognitive control (and more specifically attentional control; AC) in healthy adults. The present study aimed to further investigate this conception by assessing EEG frequency band power and AC twice (with a one-week interval) in 41 young female adults. In line with our predictions, the negative association between TBR and trait AC, as measured with an often used self-report measure, was replicated. Results also demonstrated that test-retest reliability of resting-state frontal TBR was very good (r=.93) and, moreover, TBR measured at the first session predicted AC during the second session (r=-.44). These consistent results further reinforce the notion that frontal TBR could be used as a reliable biomarker for prefrontally-mediated executive AC.

  16. Test-retest reliability of fMRI-based graph theoretical properties during working memory, emotion processing, and resting state.

    PubMed

    Cao, Hengyi; Plichta, Michael M; Schäfer, Axel; Haddad, Leila; Grimm, Oliver; Schneider, Michael; Esslinger, Christine; Kirsch, Peter; Meyer-Lindenberg, Andreas; Tost, Heike

    2014-01-01

    The investigation of the brain connectome with functional magnetic resonance imaging (fMRI) and graph theory analyses has recently gained much popularity, but little is known about the robustness of these properties, in particular those derived from active fMRI tasks. Here, we studied the test-retest reliability of brain graphs calculated from 26 healthy participants with three established fMRI experiments (n-back working memory, emotional face-matching, resting state) and two parcellation schemes for node definition (AAL atlas, functional atlas proposed by Power et al.). We compared the intra-class correlation coefficients (ICCs) of five different data processing strategies and demonstrated a superior reliability of task-regression methods with condition-specific regressors. The between-task comparison revealed significantly higher ICCs for resting state relative to the active tasks, and a superiority of the n-back task relative to the face-matching task for global and local network properties. While the mean ICCs were typically lower for the active tasks, overall fair to good reliabilities were detected for global and local connectivity properties, and for the n-back task with both atlases, smallworldness. For all three tasks and atlases, low mean ICCs were seen for the local network properties. However, node-specific good reliabilities were detected for node degree in regions known to be critical for the challenged functions (resting-state: default-mode network nodes, n-back: fronto-parietal nodes, face-matching: limbic nodes). Between-atlas comparison demonstrated significantly higher reliabilities for the functional parcellations for global and local network properties. Our findings can inform the choice of processing strategies, brain atlases and outcome properties for fMRI studies using active tasks, graph theory methods, and within-subject designs, in particular future pharmaco-fMRI studies.

  17. The "Reading the Mind in the Eyes" Test: Investigation of Psychometric Properties and Test-Retest Reliability of the Persian Version.

    PubMed

    Khorashad, Behzad S; Baron-Cohen, Simon; Roshan, Ghasem M; Kazemian, Mojtaba; Khazai, Ladan; Aghili, Zahra; Talaei, Ali; Afkhamizadeh, Mozhgan

    2015-09-01

    The psychometric properties of the Persian "Reading the Mind in the Eyes" test were investigated, so were the predictions from the Empathizing-Systemizing theory of psychological sex differences. Adults aged 16-69 years old (N = 545, female = 51.7 %) completed the test online. The analysis of items showed them to be generally acceptable. Test-retest reliability, as measured by Intra-class correlation coefficient, was 0.735 with a 95 % CI of (0.514, 0.855). The percentage of agreement for each item in the test-retest was satisfactory and the mean difference between test-retest scores was -0.159 (SD = 3.42). However, the internal consistency of Persian version, calculated by Cronbach's alpha (0.371), was poor. Females scored significantly higher than males but academic degree and field of study had no significant effect.

  18. An Examination of Test-Retest, Alternate Form Reliability, and Generalizability Theory Study of the easyCBM Reading Assessments: Grade 1. Technical Report #1216

    ERIC Educational Resources Information Center

    Anderson, Daniel; Park, Jasmine, Bitnara; Lai, Cheng-Fei; Alonzo, Julie; Tindal, Gerald

    2012-01-01

    This technical report is one in a series of five describing the reliability (test/retest/and alternate form) and G-Theory/D-Study research on the easy CBM reading measures, grades 1-5. Data were gathered in the spring 2011 from a convenience sample of students nested within classrooms at a medium-sized school district in the Pacific Northwest. Due…

  19. Establishing the Test-Retest Reliability & Concurrent Validity for the Repeat Ice Skating Test (RIST) in Adolescent Male Ice Hockey Players

    ERIC Educational Resources Information Center

    Power, Allan; Faught, Brent E.; Przysucha, Eryk; McPherson, Moira; Montelpare, William

    2012-01-01

    In this study the authors examine the test-retest reliability and concurrent validity of the Repeat Ice Skating Test (RIST). This was an on-ice field anaerobic test that measured average peak power and was validated with 3 anaerobic lab tests: (a) vertical jump, (b) the Margaria-Kalamen stair test, and (c) the Wingate Anaerobic Test. The…

  20. A Pilot Evaluation of the Test-Retest Score Reliability of the Dimensions of Mastery Questionnaire in Preschool-Aged Children

    ERIC Educational Resources Information Center

    Igoe, Deirdre; Peralta, Christopher; Jean, Lindsey; Vo, Sandra; Yep, Linda Ngan; Zabjek, Karl; Wright, F. Virginia

    2011-01-01

    Preschool-aged children continually learn new skills and perfect existing ones. "Mastery motivation" is theorized to be a personality trait linked to skill learning. The Dimensions of Mastery Questionnaire (DMQ) quantifies mastery motivation. This pilot study evaluated DMQ test-retest score reliability (preschool-version) and included…

  1. Multilevel Factor Structure, Concurrent Validity, and Test-Retest Reliability of the High School Teacher Version of the Authoritative School Climate Survey

    ERIC Educational Resources Information Center

    Huang, Francis L.; Cornell, Dewey G.

    2016-01-01

    Although school climate has long been recognized as an important factor in the school improvement process, there are few psychometrically supported measures based on teacher perspectives. The current study replicated and extended the factor structure, concurrent validity, and test-retest reliability of the teacher version of the Authoritative…

  2. Test-retest reliability of resting-state connectivity network characteristics using fMRI and graph theoretical measures.

    PubMed

    Braun, Urs; Plichta, Michael M; Esslinger, Christine; Sauer, Carina; Haddad, Leila; Grimm, Oliver; Mier, Daniela; Mohnke, Sebastian; Heinz, Andreas; Erk, Susanne; Walter, Henrik; Seiferth, Nina; Kirsch, Peter; Meyer-Lindenberg, Andreas

    2012-01-16

    Characterizing the brain connectome using neuroimaging data and measures derived from graph theory emerged as a new approach that has been applied to brain maturation, cognitive function and neuropsychiatric disorders. For a broad application of this method especially for clinical populations and longitudinal studies, the reliability of this approach and its robustness to confounding factors need to be explored. Here we investigated test-retest reliability of graph metrics of functional networks derived from functional magnetic resonance imaging (fMRI) recorded in 33 healthy subjects during rest. We constructed undirected networks based on the Anatomic-Automatic-Labeling (AAL) atlas template and calculated several commonly used measures from the field of graph theory, focusing on the influence of different strategies for confound correction. For each subject, method and session we computed the following graph metrics: clustering coefficient, characteristic path length, local and global efficiency, assortativity, modularity, hierarchy and the small-worldness scalar. Reliability of each graph metric was assessed using the intraclass correlation coefficient (ICC). Overall ICCs ranged from low to high (0 to 0.763) depending on the method and metric. Methodologically, the use of a broader frequency band (0.008-0.15 Hz) yielded highest reliability indices (mean ICC=0.484), followed by the use of global regression (mean ICC=0.399). In general, the second order metrics (small-worldness, hierarchy, assortativity) studied here, tended to be more robust than first order metrics. In conclusion, our study provides methodological recommendations which allow the computation of sufficiently robust markers of network organization using graph metrics derived from fMRI data at rest.

  3. Test-retest reliability of graph metrics in functional brain networks: a resting-state fNIRS study.

    PubMed

    Niu, Haijing; Li, Zhen; Liao, Xuhong; Wang, Jinhui; Zhao, Tengda; Shu, Ni; Zhao, Xiaohu; He, Yong

    2013-01-01

    Recent research has demonstrated the feasibility of combining functional near-infrared spectroscopy (fNIRS) and graph theory approaches to explore the topological attributes of human brain networks. However, the test-retest (TRT) reliability of the application of graph metrics to these networks remains to be elucidated. Here, we used resting-state fNIRS and a graph-theoretical approach to systematically address TRT reliability as it applies to various features of human brain networks, including functional connectivity, global network metrics and regional nodal centrality metrics. Eighteen subjects participated in two resting-state fNIRS scan sessions held ∼20 min apart. Functional brain networks were constructed for each subject by computing temporal correlations on three types of hemoglobin concentration information (HbO, HbR, and HbT). This was followed by a graph-theoretical analysis, and then an intraclass correlation coefficient (ICC) was further applied to quantify the TRT reliability of each network metric. We observed that a large proportion of resting-state functional connections (∼90%) exhibited good reliability (0.6< ICC <0.74). For global and nodal measures, reliability was generally threshold-sensitive and varied among both network metrics and hemoglobin concentration signals. Specifically, the majority of global metrics exhibited fair to excellent reliability, with notably higher ICC values for the clustering coefficient (HbO: 0.76; HbR: 0.78; HbT: 0.53) and global efficiency (HbO: 0.76; HbR: 0.70; HbT: 0.78). Similarly, both nodal degree and efficiency measures also showed fair to excellent reliability across nodes (degree: 0.52∼0.84; efficiency: 0.50∼0.84); reliability was concordant across HbO, HbR and HbT and was significantly higher than that of nodal betweenness (0.28∼0.68). Together, our results suggest that most graph-theoretical network metrics derived from fNIRS are TRT reliable and can be used effectively for brain network

  4. Test-retest reliability and validity of a custom-designed computerized neuropsychological cognitive test battery in young healthy adults

    PubMed Central

    Vora, Jinal P; Varghese, Rini; Weisenbach, Sara L; Bhatt, Tanvi

    2017-01-01

    Objective Dual-task methodologies are utilized to probe attentional resource sharing between motor and cognitive systems. Computerized neuropsychological testing is an advanced approach for cognitive assessment and its application in dual task testing is evolving. This study aimed to establish the test-retest reliability and concurrent validity of a custom-designed, computerized, cognitive test battery. Methods Fifteen healthy young adults were tested for the following domains (and tasks): 1) visuomotor function (Spot and Click, SC), 2) phonemic memory (Category Naming, Cat N) and verbal fluency (Word List Generation, WLG), 3) response inhibition (Color Naming, CN), 4) discriminant decision-making (Unveil the Star, US), 5) visual working memory (Triangle and Letter Tracking, TT and LT), 6) problem solving (Peg Game, PG) and 7) information processing speed (Letter-Number, LN). The reaction time, accuracy, time of completion, total number of responses and total number of errors were used as the outcome variables. Results The intraclass correlation coefficient (ICC) was used to determine reliability for all outcome variables and concurrent validity was established with respect to the Delis Kaplan Executive Function System™ (D-KEFS™). Reliability ranged from good to excellent for all seven tasks (ICC>0.65). The Cat.N, WLG and CN showed good correlation and PG task showed moderate correlation with tests of the D-KEFS. Conclusion Findings indicate that these computerized cognitive tests were both valid and reproducible and therefore can be easily implemented by clinicians for assessing cognition and incorporated for dual-task testing and training. PMID:28286883

  5. Determining eye-hand coordination using the sport vision trainer: an evaluation of test-retest reliability.

    PubMed

    Ellison, Paul H; Sparks, S Andy; Murphy, Philip N; Carnegie, Evelyn; Marchant, David C

    2014-01-01

    The purpose of this investigation was to assess the number of test-retest trials required to familiarize participants in order to provide acceptable reliability for the measurement of an eye-hand coordination task using the Sport Vision Trainer (SVT). Two schedules were conducted (S1 and S2). For S1, 64 participants (male n = 51, age 20.8 ± 4.9 years; female n = 13, age 20.1 ± 2.1 years) attended four sessions each 1 week apart, and undertook four trials using the SVT. For S2, 60 participants (male n = 46, age 20.8 ± 4.9 years; female n = 14, age 20.1 ± 2.1 years) attended one 20-minute schedule consisting of four consecutive trials using the SVT. Limits of agreement (LoA) analyses showed that absolute reliability was increased in both studies. The LoA for S2 indicate that error decreased between trial 1-2, 2-3, and 3-4; ± 0.95 (CI, -1.16, +2.56sec), ± 0.97 (CI, -1.66, +2.14sec), ± 0.69 (CI, -1.08, +1.62sec). It was concluded that reliable measurements of eye-hand coordination can be obtained using the SVT in one session.

  6. Test-retest reliability of skeletal muscle oxygenation measurements during submaximal cycling exercise in patients with chronic heart failure.

    PubMed

    Niemeijer, Victor M; Spee, Ruud F; Jansen, Jasper P; Buskermolen, Antonetta B C; van Dijk, Thomas; Wijn, Pieter F F; Kemps, Hareld M C

    2017-01-01

    The potential purpose of near-infrared spectroscopy (NIRS) as a clinical application in patients with chronic heart failure (CHF) is the identification of limitations in O2 delivery or utilization during exercise. The objective of this study was to evaluate absolute and relative test-retest reliability of skeletal muscle oxygenation measurements in patients with CHF. Thirty patients with systolic heart failure (left ventricular ejection fraction 31 ± 8%) performed 6-min constant-load cycling tests at 80% of the anaerobic threshold (AT) with tissue saturation index (TSI) measurement at the vastus lateralis. Tests were repeated after 10 ± 5 days to evaluate reliability. Absolute reliability was assessed with limits of agreement (LoA, expressed as bias ± random error) and coefficients of variation (CV) for absolute values (LoA range: 0·4 ± 6·2% to 0·6 ± 7·9%; CV range: 4·7-7·1%), amplitudes (LoA range -0·5 ± 5·8% to -0·7 ± 6·8%; CV range: 26·2-42·1%), onset and recovery kinetics (mean response times; LoA 0·4 ± 9·5 s, CV 23·5% and LoA -5·8 ± 50·8 s, CV 67·4% respectively) and overshoot characteristics (CV range 45·7-208·6%). Relative reliability was assessed with intraclass correlation coefficients for absolute values (range 0·74-0·90), amplitudes (range 0·85-0·92), onset and recovery kinetics (0·53 and 0·51, respectively) and overshoot characteristics (range 0·17-0·74). In conclusion, absolute reliability of absolute values and onset kinetics seems acceptable for serial within-subject comparison, and as such, for evaluation of treatment effects. Absolute reliability of amplitudes and recovery kinetics is considered unsatisfactory. Relative reliability of absolute values and amplitudes is sufficient for purposes of physiological distinction between patients with CHF. Despite lower relative reliability, kinetics may still be useful for clinical application.

  7. Test-retest reliability of an insole plantar pressure system to assess gait along linear and curved trajectories

    PubMed Central

    2014-01-01

    Background Previous studies have assessed reliability of insole technology for evaluating foot pressure distribution during linear walking. Since in natural motion straight walking is intermingled with turns, we determined the test-retest reliability of insole assessment for curved as well as linear trajectories, and estimated the minimum number of steps required to obtain excellent reliability for each output variable. Methods Sixteen young healthy participants were recruited. Each performed, two days apart, two sessions of three walking conditions: linear (LIN) and curved, clockwise (CW) and counter-clockwise (CCW). The Pedar-X system was used to collect pressure distribution. Foot print was analyzed both as a whole and as subdivided into eight regions: medial and lateral heel, medial and lateral arch, I metatarsal head, II-V metatarsal heads, hallux, lateral toes. Reliability was assessed by using intraclass correlation coefficient (ICC) for clinically relevant variables from analysis of 50 steps per trajectory: Peak Force (PF); Peak Pressure (PP); Contact Area (CA); Stance Duration (S). Results When considering whole-foot, all variables showed an ICC >0.80, therefore highly reliable. This was true for both LIN and curved trajectories. There was no difference in ICC of the four variables between left and right foot. When collapsing foot and trajectories, S had a lower ICC than PP and CA, and PP lower than CA. Mean percent error between the values of first and second session was <5%. When separately considering the eight foot regions, ICCs of PF, PP and CA for all regions and trajectories were generally >0.90, indicating excellent reliability. In curved trajectories, S showed smaller ICCs. Since the least ICC value for S was 0.60 in LIN trajectory, we estimated that to achieve an ICC ≥0.90 more than 200 steps should be collected. Conclusions High reliability of insole dynamic variables (PF, PP, CA) is obtained with 50 steps using the Pedar-X system. On the

  8. Quantitative and Qualitative Responses to Topical Cold in Healthy Caucasians Show Variance between Individuals but High Test-Retest Reliability

    PubMed Central

    Moss, Penny; Whitnell, Jasmine; Wright, Anthony

    2016-01-01

    Increased sensitivity to cold may be a predictor of persistent pain, but cold pain threshold is often viewed as unreliable. This study aimed to determine the within-subject reliability and between-subject variance of cold response, measured comprehensively as cold pain threshold plus pain intensity and sensation quality at threshold. A test-retest design was used over three sessions, one day apart. Response to cold was assessed at four sites (thenar eminence, volar forearm, tibialis anterior, plantar foot). Cold pain threshold was measured using a Medoc thermode and standard method of limits. Intensity of pain at threshold was rated using a 10cm visual analogue scale. Quality of sensation at threshold was quantified with indices calculated from subjects' selection of descriptors from a standard McGill Pain Questionnaire. Within-subject reliability for each measure was calculated with intra-class correlation coefficients and between-subject variance was evaluated as group coefficient of variation percentage (CV%). Gender and site comparisons were also made. Forty-five healthy adults participated: 20 male, 25 female; mean age 29 (range 18–56) years. All measures at all four test sites showed high within-subject reliability: cold pain thresholds r = 0.92–0.95; pain rating r = 0.93–0.97; McGill pain quality indices r = 0.87–0.85. In contrast, all measures showed wide between-subject variance (CV% between 51.4% and 92.5%). Upper limb sites were consistently more sensitive than lower limb sites, but equally reliable. Females showed elevated cold pain thresholds, although similar pain intensity and quality to males. Females were also more reliable and showed lower variance for all measures. Thus, although there was clear population variation, response to cold for healthy individuals was found to be highly reliable, whether measured as pain threshold, pain intensity or sensation quality. A comprehensive approach to cold response testing therefore may add validity

  9. Test-retest reliability of computational network measurements derived from the structural connectome of the human brain.

    PubMed

    Owen, Julia P; Ziv, Etay; Bukshpun, Polina; Pojman, Nicholas; Wakahiro, Mari; Berman, Jeffrey I; Roberts, Timothy P L; Friedman, Eric J; Sherr, Elliott H; Mukherjee, Pratik

    2013-01-01

    Structural magnetic resonance (MR) connectomics holds promise for the diagnosis, outcome prediction, and treatment monitoring of many common neurodevelopmental, psychiatric, and neurodegenerative disorders for which there is currently no clinical utility for MR imaging (MRI). Before computational network metrics from the human connectome can be applied in a clinical setting, their precision and their normative intersubject variation must be understood to guide the study design and the interpretation of longitudinal data. In this work, the reproducibility of commonly used graph theoretic measures is investigated, as applied to the structural connectome of healthy adult volunteers. Two datasets are examined, one consisting of 10 subjects scanned twice at one MRI facility and one consisting of five subjects scanned once each at two different facilities using the same imaging platform. Global graph metrics are calculated for unweighed and weighed connectomes, and two levels of granularity of the connectome are evaluated: one based on the 82-node cortical and subcortical parcellation from FreeSurfer and one based on an atlas-free parcellation of the gray-white matter boundary consisting of 1000 cortical nodes. The consistency of the unweighed and weighed edges and the module assignments are also computed for the 82-node connectomes. Overall, the results demonstrate good-to-excellent test-retest reliability for the entire connectome-processing pipeline, including the graph analytics, in both the intrasite and intersite datasets. These findings indicate that measurements of computational network metrics derived from the structural connectome have sufficient precision to be tested as potential biomarkers for diagnosis, prognosis, and monitoring of interventions in neurological and psychiatric diseases.

  10. The free-exploratory paradigm as a model of trait anxiety in female rats: test-retest reliability.

    PubMed

    Oliveira, Débora Ramiro de; Goes, Tiago Costa; Teixeira-Silva, Flavia

    2014-09-19

    The free-exploratory paradigm has been proposed as a model of trait anxiety and as such has been proven stable over time, which is a sine qua non condition for any model proposing to evaluate a personality trait. However this stability has only been shown for male rats. Considering that anxiety disorders are most prevalent in women, it's crucial that females are tested in animal models. With this in mind, the stability over time of female rats in the free-exploratory paradigm was evaluated using a test-retest procedure. The behaviour of drug-naive, adult, female, Wistar rats was measured in the free-exploratory apparatus on two occasions two months apart. The following parameters were evaluated: percentage of distance travelled in the novel compartment; number of attempts to enter the novel compartment; percentage of time spent in the novel compartment; and percentage of time rearing in the novel compartment. Subsequently, the intraclass correlation coefficient (ICC) and the kappa index (κ) were calculated for each of these parameters. The "percentage of time spent in the novel compartment" (ICC=0.727; κ=0.457), the "percentage of distance travelled in the novel compartment" (ICC=0.680; κ=0.370), and the "percentage of time rearing in the novel compartment" (ICC=0.648; κ=0.309) were found to be stable over time. Analysis of these parameters indicated fair to substantial reliability over time in two-month inter-trial interval. Therefore, our results support the idea of the free-exploratory paradigm as an animal model of trait anxiety for female rats.

  11. Internal consistency and test-retest reliability of the Chinese version of the 5-item Duke University Religion Index

    PubMed Central

    CHEN, Hanhui; WANG, Zhizhong; PHILLIPS, Michael R.; SUN, Yanli; CHENG, Hui G.

    2014-01-01

    Background The Duke University Religion Index (DUREL) is a widely-used 5-item scale assessing religiosity. Aim Assess the internal consistency, reliability, and factor structure of the revised Chinese version of DUREL. Methods Using probability proportionate to size (PPS) methods we randomly identified 3981 households with eligible occupants in 20 primary sampling sites in Ningxia Hui Autonomous Region, a province in northwest China in which 34% of the population are Muslims of the Hui ethnic group. In 3054 households a screening interview was completed and an adult family member was randomly selected; 2425 respondents completed the survey (including the DUREL) and 188 randomly selected individuals repeated the survey an average of 2.5 days later. Results The internal consistency (Cronbach’s α) of the 5 items in the full sample was 0.90; it ranged from 0.70 to 0.90 in various subgroups of subjects stratified by ethnicity, urban versus rural residence, and above versus below median education. The test-retest reliability (intraclass correlation coefficient) for the total score in the full sample was 0.87; it ranged from 0.63 to 0.90 in the different subgroups of subjects. Exploratory factor analysis in a random half of the sample identified a single factor (eigen value=4.21) that explained 84% of the total variance. Confirmatory factor analysis in the second half of the sample confirmed the unidimensional model; the model fit measures of the one-factor model using the 5 item scores as observed variables were acceptable (comparative fit index [CFI] and Tucker-Lewis index [TLI]>0.99; root mean square error of approximation [RMSEA]=0.105; χ2 =70.49, df=5), but the model fit improved after adding the correlation between items 1 and 2 (that assess organized and personal religious activities, respectively) as a sixth observed variable(CFI and TLI>0.99; RMSEA=0.046; χ2 =14.32, df=4). Conclusion The Chinese version of the DUREL is a reliable and valid measure of

  12. Test-retest reliability of evoked BOLD signals from a cognitive-emotive fMRI test battery.

    PubMed

    Plichta, Michael M; Schwarz, Adam J; Grimm, Oliver; Morgen, Katrin; Mier, Daniela; Haddad, Leila; Gerdes, Antje B M; Sauer, Carina; Tost, Heike; Esslinger, Christine; Colman, Peter; Wilson, Frederick; Kirsch, Peter; Meyer-Lindenberg, Andreas

    2012-04-15

    Even more than in cognitive research applications, moving fMRI to the clinic and the drug development process requires the generation of stable and reliable signal changes. The performance characteristics of the fMRI paradigm constrain experimental power and may require different study designs (e.g., crossover vs. parallel groups), yet fMRI reliability characteristics can be strongly dependent on the nature of the fMRI task. The present study investigated both within-subject and group-level reliability of a combined three-task fMRI battery targeting three systems of wide applicability in clinical and cognitive neuroscience: an emotional (face matching), a motivational (monetary reward anticipation) and a cognitive (n-back working memory) task. A group of 25 young, healthy volunteers were scanned twice on a 3T MRI scanner with a mean test-retest interval of 14.6 days. FMRI reliability was quantified using the intraclass correlation coefficient (ICC) applied at three different levels ranging from a global to a localized and fine spatial scale: (1) reliability of group-level activation maps over the whole brain and within targeted regions of interest (ROIs); (2) within-subject reliability of ROI-mean amplitudes and (3) within-subject reliability of individual voxels in the target ROIs. Results showed robust evoked activation of all three tasks in their respective target regions (emotional task=amygdala; motivational task=ventral striatum; cognitive task=right dorsolateral prefrontal cortex and parietal cortices) with high effect sizes (ES) of ROI-mean summary values (ES=1.11-1.44 for the faces task, 0.96-1.43 for the reward task, 0.83-2.58 for the n-back task). Reliability of group level activation was excellent for all three tasks with ICCs of 0.89-0.98 at the whole brain level and 0.66-0.97 within target ROIs. Within-subject reliability of ROI-mean amplitudes across sessions was fair to good for the reward task (ICCs=0.56-0.62) and, dependent on the particular ROI

  13. Concurrent Validity and Test-retest Reliability of the OPTOGait Photoelectric Cell System for the Assessment of Spatio-temporal Parameters of the Gait of Young Adults.

    PubMed

    Lee, Myung Mo; Song, Chang Ho; Lee, Kyoung Jin; Jung, Sang Woo; Shin, Doo Chul; Shin, Seung Ho

    2014-01-01

    [Purpose] The purpose of this study was to investigate the concurrent validity and test-retest reliability of the recently introduced OPTOGait Photoelectric Cell System for the assessment of spatio-temporal parameters of gait. [Subjects] Twenty healthy young adults (mean age = 27.35, SD = 7.4) were asked to walk 3 times on walkway at a comfortable speed. [Methods] Concurrent validity was assessed by comparing data obtained using the OPTOGait and GAITRite systems, and reliability was assessed by comparing data from the first and third OPTOGait sessions. [Results] Concurrent validity, as identified by intra-class correlation coefficients (ICC (2, 1) = 0.929-0.998), coefficients of variation (CVME = 0.32-11.30%), and 95% limits of agreement, showed high levels of correlation. In addition, the test-retest reliability of the OPTOGait Photoelectric Cell System was demonstrated as showing a high level of correlation with all spatio-temporal parameters by intra-class correlation coefficients (ICC (3, 1) = 0.785-0.952), coefficients of variation (CVME = 1.66-4.06%), 95% limits of agreement, standard error of measurement (SEM = 2.17-5.96%), and minimum detectable change (MDC95% = 6.01-16.52%). [Conclusion] The OPTOGait Photoelectric Cell System has strong concurrent validity along with relative and absolute test-retest reliabilities. This portable system with easy-to-use features can be used for clinical assessments or research purposes as an objective means of assessing gait.

  14. An Examination of Test-Retest, Alternate Form Reliability, and Generalizability Theory Study of the easyCBM Passage Reading Fluency Assessments: Grade 4. Technical Report #1219

    ERIC Educational Resources Information Center

    Park, Bitnara Jasmine; Anderson, Daniel; Alonzo, Julie; Lai, Cheng-Fei; Tindal, Gerald

    2012-01-01

    This technical report is one in a series of five describing the reliability (test/retest and alternate form) and G-Theory/D-Study research on the easyCBM reading measures, grades 1-5. Data were gathered in the spring of 2011 from a convenience sample of students nested within classrooms at a medium-sized school district in the Pacific Northwest.…

  15. An Examination of Test-Retest, Alternate Form Reliability, and Generalizability Theory Study of the easyCBM Reading Assessments: Grade 2. Technical Report #1217

    ERIC Educational Resources Information Center

    Anderson, Daniel; Lai, Cheg-Fei; Park, Bitnara Jasmine; Alonzo, Julie; Tindal, Gerald

    2012-01-01

    This technical report is one in a series of five describing the reliability (test/retest an alternate form) and G-Theory/D-Study on the easyCBM reading measures, grades 1-5. Data were gathered in the spring of 2011 from the convenience sample of students nested within classrooms at a medium-sized school district in the Pacific Northwest. Due to…

  16. An Examination of Test-Retest, Alternate Form Reliability, and Generalizability Theory Study of the easyCBM Reading Assessments: Grade 5. Technical Report #1220

    ERIC Educational Resources Information Center

    Lai, Cheng-Fei; Park, Bitnara Jasmine; Anderson, Daniel; Alonzo, Julie; Tindal, Gerald

    2012-01-01

    This technical report is one in a series of five describing the reliability (test/retest and alternate form) and G-Theory/D-Study research on the easyCBM reading measures, grades 1-5. Data were gathered in the spring of 2011 from a convenience sample of students nested within classrooms at a medium-sized school district in the Pacific Northwest.…

  17. Test-Retest Reliability of the 10-Metre Fast Walk Test and 6-Minute Walk Test in Ambulatory School-Aged Children with Cerebral Palsy

    ERIC Educational Resources Information Center

    Thompson, Patricia; Beath, Tricia; Bell, Jacqueline; Jacobson, Gabrielle; Phair, Tegan; Salbach, Nancy M.; Wright, F. Virginia

    2008-01-01

    Short-term test-retest reliability of the 10-metre fast walk test (10mFWT) and 6-minute walk test (6MWT) was evaluated in 31 ambulatory children with cerebral palsy (CP), with subgroup analyses in Gross Motor Function Classification System (GMFCS) Levels I (n=9), II (n=8), and III (n=14). Sixteen females and 15 males participated, mean age 9 years…

  18. Using a Web-Based Approach to Assess Test-Retest Reliability of the "Hypertension Self-Care Profile" Tool in an Asian Population: A Validation Study.

    PubMed

    Koh, Yi Ling Eileen; Lua, Yi Hui Adela; Hong, Liyue; Bong, Huey Shin Shirley; Yeo, Ling Sui Jocelyn; Tsang, Li Ping Marianne; Ong, Kai Zhi; Wong, Sook Wai Samantha; Tan, Ngiap Chuan

    2016-03-01

    Essential hypertension often requires affected patients to self-manage their condition most of the time. Besides seeking regular medical review of their life-long condition to detect vascular complications, patients have to maintain healthy lifestyles in between physician consultations via diet and physical activity, and to take their medications according to their prescriptions. Their self-management ability is influenced by their self-efficacy capacity, which can be assessed using questionnaire-based tools. The "Hypertension Self-Care Profile" (HTN-SCP) is 1 such questionnaire assessing self-efficacy in the domains of "behavior," "motivation," and "self-efficacy." This study aims to determine the test-retest reliability of HTN-SCP in an English-literate Asian population using a web-based approach. Multiethnic Asian patients, aged 40 years and older, with essential hypertension were recruited from a typical public primary care clinic in Singapore. The investigators guided the patients to fill up the web-based 60-item HTN-SCP in English using a tablet or smartphone on the first visit and refilled the instrument 2 weeks later in the retest. Internal consistency and test-retest reliability were evaluated using Cronbach's Alpha and intraclass correlation coefficients (ICC), respectively. The t test was used to determine the relationship between the overall HTN-SCP scores of the patients and their self-reported self-management activities. A total of 160 patients completed the HTN-SCP during the initial test, from which 71 test-retest responses were completed. No floor or ceiling effect was found for the scores for the 3 subscales. Cronbach's Alpha coefficients were 0.857, 0.948, and 0.931 for "behavior," "motivation," and "self-efficacy" domains respectively, indicating high internal consistency. The item-total correlation ranges for the 3 scales were from 0.105 to 0.656 for Behavior, 0.401 to 0.808 for Motivation, 0.349 to 0.789 for Self-efficacy. The corresponding

  19. The Assessment of Reliability Under Range Restriction: A Comparison of [Alpha], [Omega], and Test-Retest Reliability for Dichotomous Data

    ERIC Educational Resources Information Center

    Fife, Dustin A.; Mendoza, Jorge L.; Terry, Robert

    2012-01-01

    Though much research and attention has been directed at assessing the correlation coefficient under range restriction, the assessment of reliability under range restriction has been largely ignored. This article uses item response theory to simulate dichotomous item-level data to assess the robustness of KR-20 ([alpha]), [omega], and test-retest…

  20. Reliability of Autism-Tics, AD/HD, and other Comorbidities (A-TAC) inventory in a test-retest design.

    PubMed

    Larson, Tomas; Kerekes, Nóra; Selinus, Eva Norén; Lichtenstein, Paul; Gumpert, Clara Hellner; Anckarsäter, Henrik; Nilsson, Thomas; Lundström, Sebastian

    2014-02-01

    The Autism-Tics, AD/HD, and other Comorbidities (A-TAC) inventory is used in epidemiological research to assess neurodevelopmental problems and coexisting conditions. Although the A-TAC has been applied in various populations, data on retest reliability are limited. The objective of the present study was to present additional reliability data. The A-TAC was administered by lay assessors and was completed on two occasions by parents of 400 individual twins, with an average interval of 70 days between test sessions. Intra- and inter-rater reliability were analysed with intraclass correlations and Cohen's kappa. A-TAC showed excellent test-retest intraclass correlations for both autism spectrum disorder and attention deficit hyperactivity disorder (each at .84). Most modules in the A-TAC had intra- and inter-rater reliability intraclass correlation coefficients of > or = .60. Cohen's kappa indi- cated acceptable reliability. The current study provides statistical evidence that the A-TAC yields good test-retest reliability in a population-based cohort of children.

  1. Test-retest reliability, criterion-related validity, and minimal detectable change of score on an abbreviated Wingate test for field sport participants.

    PubMed

    Hachana, Younes; Attia, Ahmed; Nassib, Sabri; Shephard, Roy J; Chelly, Mohamed Souhaiel

    2012-05-01

    Repeat measurements in 69 young adults were performed to assess the test-retest reliability and the 95% confidence interval of the difference in score between paired observations (MDC95) of a Wingate test as abbreviated for field sport participants (test of a 15-second duration [15-secT]). Test-retest reliability was excellent for peak power output (PPO) and mean power output (MPO), independently of their mode of expression and was moderate for the fatigue index (FI). The standard errors of measurement (SEM) for absolute, relative, and derived PPO and MPO values ranged from 2.6 to 3.7%, all being smaller than the corresponding smallest worthwhile change (SWC). In contrast, FI values were rated as "marginal," with an SEM (9.6%) greater than the SWC (1.7). The range of MDC95 values for PPO and MPO were 9.9-10.4 and 7.37-7.42%, respectively. The absolute MPO showed the highest test-retest reliability and was the most effective in detecting real change. A second phase of the study evaluated the criterion-related validity of the 15-secT in 43 young men who performed 15-secT and standard 30-second Wingate anaerobic test (30-secT) in random order, on 2 separate occasions. There were no significant intertest differences in absolute, relative, or derived PPO. However, the FI for the 30-secT was greater than that for the 15-secT. Intertest correlations were highly significant for both MPOs and FIs. These findings suggest that the abbreviated Wingate test offers a reliable and valid tool for the evaluation of PPO and MPO, at least in young physical education students.

  2. Test-retest reliability of UPDRS-III, dyskinesia scales, and timed motor tests in patients with advanced Parkinson's disease: an argument against multiple baseline assessments.

    PubMed

    Metman, Leo Verhagen; Myre, Brian; Verwey, Niek; Hassin-Baer, Sharon; Arzbaecher, Jean; Sierens, Diane; Bakay, Roy

    2004-09-01

    The primary objective of this study was to assess the intra-rater reliability of the motor section of the Unified Parkinson's Disease Rating Scale (UPDRS-III) in patients with advanced Parkinson's disease (PD). The secondary objective was to assess the intra-rater reliability of standard timed motor tests and dyskinesia scales to determine the necessity of multiple baseline core evaluations before surgery for PD. We carried out two standardized preoperative core evaluations of patients with advanced PD scheduled to undergo deep brain stimulation. Patients were examined in the defined off and on conditions by the same rater. UPDRS-III, timed tests, and dyskinesia scores from the two evaluations were compared using Wilcoxon Signed Ranks tests and intraclass correlation coefficients (ICC). Differences in UPDRS-III scores for the two visits were clinically and statistically nonsignificant, and the ICC was 0.9. Similarly, there were no significant differences in timed motor tests or dyskinesia scores, with a median ICC of 0.8. The results indicate that previous findings of high test-retest reliability of UPDRS-III in early untreated PD patients can now be extended to those with advanced disease complicated by motor fluctuations. In addition, test-retest reliability of dyskinesia scales and timed motor tests was high. Taken together, these findings challenge the need for multiple baseline assessments as currently stipulated in core assessment protocols for surgical intervention in PD.

  3. TEST-RETEST RELIABILITY OF A FIELD-BASED PHYSICAL FITNESS ASSESSMENT FOR CHILDREN AGED 3-6 YEARS.

    PubMed

    Latorre Román, Pedro Ángel; Mora López, David; Fernández Sánchez, Marta; Salas Sánchez, Jesús; Moriana Coronas, Francisco; García-Pinillos, Felipe

    2015-10-01

    Objetivo: el presente estudio tiene como objetivo determinar la fiabilidad test-retest de una batería de evaluación de la condición física en niños de 3-6 años. Método: un total de 553 niños participaron voluntariamente en el estudio; todos los niños tenían entre 3 a 6 años. Las características demográficas revelan que 274 eran niños (edad: 4.63 ± 0.94 años, índice de masa corporal [IMC]= 16.30 ± 2.07 kg/m2), y 279 eran niñas (edad 4.70 ± 0.97 años, IMC = 16.28 ± 2.09 kg/m2), que fueron seleccionados de entre 8 escuelas en el sur de España. Todas las pruebas incluidas en la batería, con excepción de la prueba de 10 x 20 metros (m), que fue diseñada ad hoc para este estudio, se han utilizado en estudios anteriores y se centraron en los componentes básicos de la condición físico-motora, como la resistencia, la fuerza, la velocidad, el tiempo de reacción y el equilibrio. Resultados: los resultados obtenidos en este estudio indican que la batería de condición física para preescolares ha obtenido parámetros de fiabilidad test-retest adecuados y es capaz de discriminar según la edad entre las diferentes pruebas en niños sanos de 3 a 6 años. Conclusión: la batería de condición física para preescolares diseñada en este estudio es un instrumento válido, fiable y fácil de emplear para evaluar la condición física de los niños en edad preescolar. Las pruebas utilizadas eran seguras, fáciles de realizar, muy aceptables y comprensibles para los niños.

  4. Test-Retest Reliability of the National Health and Nutrition Examination Survey’s 5-Question Food Insecurity Survey Completed by Fourth-Grade Children

    PubMed Central

    Baxter, Suzanne D.; Smith, Albert F.; Hitchcock, David B.; Collins, Kathleen L.; Guinn, Caroline H.; Finney, Christopher J.; Royer, Julie A.; Miller, Patricia H.

    2015-01-01

    Objective To examine test-retest reliability and internal consistency of a 5-question food insecurity survey used in the National Health and Nutrition Examination Survey. Methods Researchers administered the National Health and Nutrition Examination Survey in the classroom to 92 fourth-grade children (74 African American; 48 girls) in 2 sessions 27–30 days apart in spring, 2011. Each classroom administration lasted 5–10 minutes. Results Test-retest reliability was 0.66 (Kendall tau), which is modest. Internal consistency (Cronbach alpha) was .67 and .70 for respective administrations. Food insecurity scores were related to gender (adjusted P = .05) and academic achievement (adjusted P = .004) but not to socioeconomic status or body mass index percentile (binomial regression). On average, boys reported higher food insecurity than girls. Children with lower academic achievement scores reported higher food insecurity than children with higher academic achievement scores. Conclusions and Implications The National Health and Nutrition Examination 5-question survey may be group administered to assess food insecurity efficiently as reported by individual fourth-grade children. PMID:26363937

  5. One-Year Test-Retest Reliability of the Maryland Resource for the Behavioral Utilization of the Reinforcement of Negative Stimuli (MRBURNS)

    PubMed Central

    Dahne, Jennifer; Richards, Jessica M.; Lejuez, C. W.; MacPherson, Laura

    2015-01-01

    The Maryland Resource for the Behavioral Utilization of the Reinforcement of Negative Stimuli (MRBURNS) is a novel behavioral task designed to measure individual differences in negative reinforcement-based risk taking propensity. Performance on the MRBURNS has been linked with alcohol-related problems and negative reinforcement-based drinking motives, as well as symptoms of anxiety and depression; however, it is unclear if performance on the task represents a stable measure of negative reinforcement-based risk taking over time. As such, the current study aimed to examine the test-retest reliability of the MRBURNS over a period of one year. Results indicate that the correlation between year 1 and year 2 risk behavior (average number of pumps) on the MRBURNS was .43 across all trials. With the one year test-retest reliability of the MRBURNS established, the MRBURNS may be a useful approach to measuring the relative contribution of negative reinforcement-based risk taking in the development of risky behaviors over time, and may be used to monitor the effects of novel interventions that aim to reduce negative reinforcement based risk taking in the real world. PMID:25620830

  6. One-Year Test-Retest Reliability of the Maryland Resource for the Behavioral Utilization of the Reinforcement of Negative Stimuli (MRBURNS).

    PubMed

    Dahne, Jennifer; Richards, Jessica M; Lejuez, C W; MacPherson, Laura

    2015-04-01

    The Maryland Resource for the Behavioral Utilization of the Reinforcement of Negative Stimuli (MRBURNS) is a novel behavioral task designed to measure individual differences in negative reinforcement-based risk taking propensity. Performance on the MRBURNS has been linked with alcohol-related problems and negative reinforcement-based drinking motives, as well as symptoms of anxiety and depression; however, it is unclear if performance on the task represents a stable measure of negative reinforcement-based risk taking over time. As such, the current study aimed to examine the test-retest reliability of the MRBURNS over a period of one year. Results indicate that the correlation between year 1 and year 2 risk behavior (average number of pumps) on the MRBURNS was .43 across all trials. With the one year test-retest reliability of the MRBURNS established, the MRBURNS may be a useful approach to measuring the relative contribution of negative reinforcement-based risk taking in the development of risky behaviors over time, and may be used to monitor the effects of novel interventions that aim to reduce negative reinforcement based risk taking in the real world.

  7. Test-Retest Reliability and Concurrent Validity of a Single Tri-Axial Accelerometer-Based Gait Analysis in Older Adults with Normal Cognition

    PubMed Central

    Byun, Seonjeong; Han, Ji Won; Kim, Tae Hui; Kim, Ki Woong

    2016-01-01

    Objective We investigated the concurrent validity and test-retest reliability of spatio-temporal gait parameters measured with a single tri-axial accelerometer (TAA), determined the optimal number of steps required for obtaining acceptable levels of reliability, and compared the validity and reliability of the estimated gait parameters across the three reference axes of the TAA. Methods A total of 82 cognitively normal elderly participants walked around a 40-m long round walkway twice wearing a TAA at their center of body mass. Gait parameters such as cadence, gait velocity, step time, step length, step time variability, and step time asymmetry were estimated from the low pass-filtered signal of the TAA. The test-retest reliability and concurrent validity with the GAITRite® system were evaluated for the estimated gait parameters. Results Gait parameters using signals from the vertical axis showed excellent reliability for all gait parameters; the intraclass correlation coefficient (ICC) was 0.79–0.90. A minimum of 26 steps and 14 steps were needed to achieve excellent reliability in step time variability and step time asymmetry, respectively. A strong level of agreement was seen for the basic gait parameters between the TAA and GAITRiteⓇ (ICC = 0.91–0.96). Conclusions The measurement of gait parameters of elderly individuals with normal cognition using a TAA placed on the body’s center of mass was reliable and showed superiority over the GAITRiteⓇ with regard to gait variability and asymmetry. The TAA system was a valid tool for measuring basic gait parameters. Considering its wearability and low price, the TAA system may be a promising alternative to the pressure sensor walkway system for measuring gait parameters. PMID:27427965

  8. Intra-observer reliability for measuring first and second toe and metatarsal protrusion distance using palpation-based tests: a test-retest study

    PubMed Central

    2014-01-01

    Background Measurement of first and second metatarsal and toe protrusion is frequently used to explain foot problems using x-rays, osteological measurements or palpation-based tests. Length differences could be related to the appearance of problems in the foot. A test-retest design was conducted in order to establish the intra-rater reliability of three palpation-based tests. Methods 202 feet of physical therapy students and teachers of the CEU San Pablo University of Madrid, 39 men and 62 women, were measured using three different tests. Data were analysed using SPSS version 15.0. Mean, SD and 95% CI were calculated for each variable. A normal distribution of quantitative data was assessed using the Kolmogorov-Smirnov test. The test-retest intra-rater reliability was assessed using an Intraclass Correlation Coefficient (ICC). The Standard Error Mean (SEM) and the Minimal Detectable Change (MDC) were also obtained. Results All the ICC values showed a high degree of reliability (Test 1 = 0.97, Test 2 = 0.86 and Test 3 = 0.88) as did the SEM (Test 1 = 0.07, Test 2 = 0.10 and Test 3 = 0.11) and the MDC (Test 1 = 0.21, Test 2 = 0.30 and Test 3 = 0.31). Conclusions Reliability of measuring first and second metatarsal and toe protrusion using the three palpation-based tests showed a high degree of reliability. PMID:25729437

  9. Development, construct validity and test-retest reliability of a field-based wheelchair mobility performance test for wheelchair basketball.

    PubMed

    de Witte, Annemarie M H; Hoozemans, Marco J M; Berger, Monique A M; van der Slikke, Rienk M A; van der Woude, Lucas H V; Veeger, Dirkjan H E J

    2017-01-16

    The aim of this study was to develop and describe a wheelchair mobility performance test in wheelchair basketball and to assess its construct validity and reliability. To mimic mobility performance of wheelchair basketball matches in a standardised manner, a test was designed based on observation of wheelchair basketball matches and expert judgement. Forty-six players performed the test to determine its validity and 23 players performed the test twice for reliability. Independent-samples t-tests were used to assess whether the times needed to complete the test were different for classifications, playing standards and sex. Intraclass correlation coefficients (ICC) were calculated to quantify reliability of performance times. Males performed better than females (P < 0.001, effect size [ES] = -1.26) and international men performed better than national men (P < 0.001, ES = -1.62). Performance time of low (≤2.5) and high (≥3.0) classification players was borderline not significant with a moderate ES (P = 0.06, ES = 0.58). The reliability was excellent for overall performance time (ICC = 0.95). These results show that the test can be used as a standardised mobility performance test to validly and reliably assess the capacity in mobility performance of elite wheelchair basketball athletes. Furthermore, the described methodology of development is recommended for use in other sports to develop sport-specific tests.

  10. Construct validity and test-retest reliability of the International Fitness Scale (IFIS) in Spanish children aged 9-12 years.

    PubMed

    Sánchez-López, M; Martínez-Vizcaíno, V; García-Hermoso, A; Jiménez-Pavón, D; Ortega, F B

    2015-08-01

    We aimed to examine (a) the construct validity and reliability of the International Fitness Scale (IFIS) in children; and (b) the association of both self-reported and measured fitness with cardiometabolic risk. Cross-sectional study in 1145 Spanish children (9-12 years). We measured body fat, waist circumference, blood pressure, lipids, insulin, and fitness level (reported and measured). A validated cardiometabolic syndrome index was used. An age- and sex-matched sample of 245 children originally not included in the study sample fulfilled IFIS twice for reliability purposes. IFIS was able to correctly classify children according to their measured fitness levels (analysis of covariance, adjusted for sex and age was used). Test-retest reliability of IFIS items was also good, i.e., average weighted Kappa = 0.70. Our data also suggest that both measured and reported cardiorespiratory, and speed and agility fitness were associated with cardiometabolic risk factors, such as adiposity and a cardiometabolic syndrome risk score. The associations for muscular fitness (both reported and measured) differed depending on how it was expressed (i.e., absolute vs relative terms). Our findings suggest that self-reported fitness, as assessed by IFIS, is a valid, reliable, and health-related measure, and it can be a good alternative at population level when physical fitness cannot be measured.

  11. The Validity and Test-Retest Reliability of the Leeds Multiple Sclerosis Quality of Life Scale in Turkish Patients

    ERIC Educational Resources Information Center

    Akbiyik, Derya Iren; Sumbuloglu, Vildan; Guney, Zafer; Armutlu, Kadriye; Korkmaz, Nilufer; Keser, Ilke; Yuksel, Muazzez Merve; Karabudak, Rana

    2009-01-01

    The aim of the study was to translate and test the reliability and validity of the Leeds Multiple Sclerosis Quality of Life Scale (LMSQoL) in Turkish patients with multiple sclerosis (MS). Demographic data of MS patients who had a registration in and followed up by a university hospital were recorded. The LMSQoL and Turkish Quality of Life…

  12. Impact of the Number of Response Categories and Anchor Labels on Coefficient Alpha and Test-Retest Reliability

    ERIC Educational Resources Information Center

    Weng, Li-Jen

    2004-01-01

    A total of 1,247 college students participated in this study on the effect of scale format on the reliability of Likert-type rating scales. The number of response categories ranged from 3 to 9. Anchor labels on the scales were provided for each response option or for the end points only. The results indicated that the scales with few response…

  13. Test-retest reliability of wavelet - and Fourier based EMG (instantaneous) median frequencies in the evaluation of back and hip muscle fatigue during isometric back extensions.

    PubMed

    Coorevits, Pascal; Danneels, Lieven; Cambier, Dirk; Ramon, Herman; Druyts, Hans; Karlsson, J Stefan; De Moor, Georges; Vanderstraeten, Guy

    2008-10-01

    The present study aimed at assessing the test-retest reliability of wavelet - and Fourier derived (instantaneous) median frequencies of surface electromyographic (EMG) measurements of back and hip muscles during isometric back extensions. Twenty healthy subjects (10 males and 10 females) performed a modified Biering-Sørensen test on two separate days, with a 1-week interval between the two tests. Surface EMG measurements were bilaterally performed from the latissimus dorsi, the thoracic and lumbar parts of the longissimus thoracis, the thoracic and lumbar parts of the iliocostalis lumborum, the multifidus, the gluteus maximus and the biceps femoris. In addition, three-dimensional kinematic data were recorded of the subjects' lumbar vertebrae. The (instantaneous) median frequencies were calculated from the EMG signals using continuous wavelet (IMDF) - and short-time Fourier transforms (MDF). Linear regressions performed on the IMDF and MDF data as a function of time yielded slopes (IMDF(slope) and MDF(slope)) and intercepts (IMDF(init) and MDF(init)) of the regression lines. Test-retest reliability was assessed on the normalized slopes and intercept parameters by means of intraclass correlation coefficients (ICC) and standard errors of measurements expressed as percentages of the mean values (% SEM). The results of IMDF(slope) and MDF(slope) parameters indicated ICCs for back and hip muscles between .443 and .727 for IMDF(slope), values between .273 and .734 for MDF(slope), % SEM between 7.6% and 58.9% for IMDF(slope) and % SEM between 8.2% and 25.3% for MDF(slope), respectively. The ICCs for IMDF(init) and MDF(init) parameters varied between .376 and .907 for IMDF(init) and between .383 and .883 for MDF(init), and % SEM ranged from 2.7% to 6.3% for IMDF(init) and from 2.6% to 4.7% for MDF(init), respectively. These results indicate that both wavelet - and Fourier based (instantaneous) median frequency parameters generally are reliable in the analysis of back and

  14. Test-retest reliability, feasibility and clinical correlates of the Eurofit test battery in people with bipolar disorder.

    PubMed

    Vancampfort, Davy; Sienaert, Pascal; Wyckaert, Sabine; De Hert, Marc; Stubbs, Brendon; Rosenbaum, Simon; Buys, Roselien; Probst, Michel

    2015-08-30

    The physical health of people with bipolar disorder is poorer in comparison to the general population, with an increased prevalence of cardiovascular and metabolic diseases. Due to the established beneficial effects, there is growing interest in the promotion of physical activity and in particular the accurate measurement of physical fitness in this population. Currently, no existing measures of physical fitness used in the general population have been tested for validity and reliability among people with bipolar disorder. Therefore, we examined the reproducibility, feasibility and correlates of the Eurofit test battery in people with bipolar disorder. From 24 men (43.0±13.0 years) and 22 women (43.9±10.2 years) with bipolar disorder two trials of the Eurofit test, administered within three days, were analyzed. All Eurofit items showed good reproducibility with intraclass correlation coefficients ranging from 0.71 for the whole body balance test to 0.98 for the handgrip force test. Significant correlations with Eurofit test items were found with age, illness duration, body mass index, smoking behavior, mean daily lithium dosage, and depressive and lifetime hypomanic symptoms. The current study demonstrates that the Eurofit test can be recommended for evaluating the physical fitness of inpatients with bipolar disorder.

  15. Shear Elastic Modulus on Patellar Tendon Captured from Supersonic Shear Imaging: Correlation with Tangent Traction Modulus Computed from Material Testing System and Test-Retest Reliability.

    PubMed

    Zhang, Zhi Jie; Fu, Siu Ngor

    2013-01-01

    Characterization of the elastic properties of a tendon could enhance the diagnosis and treatment of tendon injuries. The purpose of this study was to examine the correlation between the shear elastic modulus on the patellar tendon captured from a Supersonic Shear Imaging (SSI) and the tangent traction modulus computed from a Material testing system (MTS) on 8 fresh patellar pig tendons (Experiment I). Test-retest reliability of the shear elastic modulus captured from the SSI was established in Experiment II on 22 patellar tendons of 11 healthy human subjects using the SSI. Spearman Correlation coefficients for the shear elastic modulus and tangent traction modulus ranged from 0.82 to 1.00 (all p<0.05) on the 8 tendons. The intra and inter-operator reliabilities were 0.98 (95% CI: 0.93-0.99) and 0.97 (95% CI: 0.93-0.98) respectively. The results from this study demonstrate that the shear elastic modulus of the patellar tendon measured by the SSI is related to the tangent traction modulus quantified by the MTS. The SSI shows good intra and inter-operator repeatability. Therefore, the present study shows that SSI can be used to assess elastic properties of a tendon.

  16. Test-Retest Reliability of 10 Hz Conditioning Electrical Stimulation Inducing Long-Term Potentiation (LTP)-Like Pain Amplification in Humans

    PubMed Central

    Xia, Weiwei; Mørch, Carsten Dahl; Andersen, Ole Kæseler

    2016-01-01

    Background 10 Hz conditioning electrical stimulation (CES) has been shown to induce long-term potentiation (LTP)-like pain amplification similar to traditional 100 Hz CES in healthy humans. The aim of this study was to assess the test-retest reliability and to estimate sample sizes required for future crossover and parallel study designs. Methods The 10 Hz paradigm (500 rectangular pulses lasting 50 s) was repeated on two separate days with one week interval in twenty volunteers. Perceptual intensities to single electrical stimulation (SES) at the conditioned skin site and to mechanical stimuli (pinprick and light stroking) in immediate vicinity to the conditioned skin site were recorded. Superficial blood flow (SBF) was assessed as indicator of neurogenic inflammation. All outcome measures were assessed with 10 min interval three times before and six times after the CES. The coefficient of variation and intra-class correlation coefficient were calculated within session and between sessions. Sample sizes were estimated for future crossover (Ncr) and parallel (Np) drug testing studies expected to detect a 30% decrease for the individual outcome measure following 10 Hz CES. Results Perceptual intensity ratings to light stroking (Ncr = 2, Np = 33) and pinprick stimulation (491 mN) (Ncr = 6, Np = 54) increased after CES and showed better reliability in crossover than parallel design. The SBF increased after CES, and then declined until reaching a plateau 20 minutes postCES. SBF showed acceptable reliability both in crossover and parallel designs (Ncr = 3, Np = 13). Pain ratings to SES were reliable, but with large estimated sample sizes (Ncr = 634, Np = 11310) due to the minor pain amplification. Conclusions The reliability of 10 Hz CES was acceptable in inducing LTP-like effects in the assessments of superficial blood flow, heterotopic mechanical hyperalgesia, and dysesthesia in terms of sample sizes for future crossover study designs. PMID:27529175

  17. Test-retest reliability of three-dimensional kinematics using an electromagnetic tracking system during single-leg squat and stepping maneuver.

    PubMed

    Nakagawa, Theresa H; Moriya, Érika Tiemi Uehara; Maciel, Carlos D; Serrão, Fábio V

    2014-01-01

    The electromagnetic tracking system (ETS) has been used to analyze three-dimensional (3D) lower limb kinematics. The single-leg squat and stepping maneuver are useful tasks to evaluate lower extremity alignment in a clinical setting. The purpose of this study was to evaluate the test-retest reliability of trunk, pelvis, hip, and knee 3D kinematics using an ETS during single-leg squat and stepping maneuver and compare 3D kinematics between tasks. Twenty healthy volunteers (10 males and 10 females) completed two test sessions 3-5 days apart. Three-dimensional kinematics using an ETS was assessed during single-leg squat and stepping maneuver. Overall, intrarater-intrasession reliability (ICCs=0.83-1.00) and intersession reliabilities (ICCs=0.82-0.97) were high during single-leg squat and stepping maneuver. The intrasession minimal detectable change (MDC) ranged from 1.3° for the knee frontal plane range of motion for single-leg squat to 6.2° for the pelvic transverse range of motion for the stepping maneuver. Intersession MDC values ranged from 1.2° for the ipsilateral trunk lean for the single-leg squat to 8.3° for hip flexion for the stepping maneuver. Healthy participants exhibited greater anterior pelvic tilt, more hip flexion, and less contralateral pelvis forward excursion (p<0.05) during single-leg squat compared with the stepping maneuver. These findings suggest that the 3D kinematics of the trunk, pelvis, hip, and knee using an ETS is reliable during single-leg squat and the stepping maneuver. Minimal detectable change values were low during the evaluated activities. Intertask comparisons revealed differences in hip and pelvis kinematics.

  18. Test-retest reliability study of a new improved Leg-O-meter, the Leg-O-meter II, in patients suffering from venous insufficiency of the lower limbs.

    PubMed

    Bérard, A; Zuccarelli, F

    2000-09-01

    The objective of this study was to evaluate the interobserver and test-retest reliability of the new improved Leg-O-Meter, the Leg-O-Meter II, an instrument designed to measure leg circumference. The new Leg-O-Meter consists of a tape measure fixed to a stand attached to a small board on which the patient is in standing position. Only the left limb is measured. For this study the tape measure of the Leg-O-Meter was fixed at 13 cm from the board. Subjects were recruited from patients consulting the phlebology clinic of Hopital St-Michel, Paris, France. Thirty-nine patients were asked to participate in the test phase and a subsample of 20 patients were asked to participate in addition to a retest phase 10 minutes after their first measurement. Patients were asked to enter a closed room where four independent and blinded observers consecutively took measurements of their left calf with the Leg-O-Meter II. Twenty patients were also asked to come back 10 minutes later for a second round of measurements. While waiting, patients were seated. Variables collected included leg circumference, presence of edema, clinical presentation, and venous insufficiency treatment history. The order of the observers was randomized between patients. Under the assumption of a two-way random effects model, an intraclass correlation coefficient (ICC) was used to determine the reliability of a measure with the Leg-O-Meter II as well as the test-retest reliability. The interobserver and test-retest reliabilities of the Leg-O-Meter II were 98.28% [96.90%, 100.00%] CI95% and 95.90% [92.00%, 100.00%] CI95%, respectively. The Leg-O-Meter II has higher interobserver reliability and is easier to manipulate than the previous version. In addition, it has substantive test-retest reliability.

  19. Test-retest reliability and construct validity of the ENERGY-parent questionnaire on parenting practices, energy balance-related behaviours and their potential behavioural determinants: the ENERGY-project

    PubMed Central

    2012-01-01

    Background Insight in parental energy balance-related behaviours, their determinants and parenting practices are important to inform childhood obesity prevention. Therefore, reliable and valid tools to measure these variables in large-scale population research are needed. The objective of the current study was to examine the test-retest reliability and construct validity of the parent questionnaire used in the ENERGY-project, assessing parental energy balance-related behaviours, their determinants, and parenting practices among parents of 10–12 year old children. Findings We collected data among parents (n = 316 in the test-retest reliability study; n = 109 in the construct validity study) of 10–12 year-old children in six European countries, i.e. Belgium, Greece, Hungary, the Netherlands, Norway, and Spain. Test-retest reliability was assessed using the intra-class correlation coefficient (ICC) and percentage agreement comparing scores from two measurements, administered one week apart. To assess construct validity, the agreement between questionnaire responses and a subsequent interview was assessed using ICC and percentage agreement. All but one item showed good to excellent test-retest reliability as indicated by ICCs > .60 or percentage agreement ≥ 75%. Construct validity appeared to be good to excellent for 92 out of 121 items, as indicated by ICCs > .60 or percentage agreement ≥ 75%. From the other 29 items, construct validity was moderate for 24 and poor for 5 items. Conclusions The reliability and construct validity of the items of the ENERGY-parent questionnaire on multiple energy balance-related behaviours, their potential determinants, and parenting practices appears to be good. Based on the results of the validity study, we strongly recommend adapting parts of the ENERGY-parent questionnaire if used in future research. PMID:22888983

  20. An Examination of Test-Retest, Alternate Form Reliability, and Generalizability Theory Study of the easyCBM Word and Passage Reading Fluency Assessments: Grade 3. Technical Report #1218

    ERIC Educational Resources Information Center

    Park, Bitnara Jasmine; Anderson, Daniel; Alonzo, Julie; Lai, Cheng-Fei; Tindal, Gerald

    2012-01-01

    This technical report is one in a series of five describing the reliability (test/retest and alternate form) and G-Theory/D-Study research on the easyCBM reading measures, grades 1-5. Data were gathered in the spring of 2011 from a convenience sample of students nested within classrooms at a medium-sized school district in the Pacific Northwest.…

  1. Validity and Test-Retest Reliability of the TIVRE-Basket Test for the Determination of Aerobic Power in Elite Male Basketball Players.

    PubMed

    Vaquera, Alejandro; Villa, Jose G; Morante, Juan C; Thomas, Gavin; Renfree, Andrew J; Peters, Derek M

    2016-02-01

    The aims of this study were to (a) determine the relationship between performance on the court-based TIVRE-Basket test and peak aerobic power determined from a criterion laboratory-based incremental treadmill test and (b) to examine the test-retest reliability of the TIVRE-Basket test in elite male basketball players. To address aim 1, 36 elite male basketball players (age: 25.2 ± 4.7 years, weight: 94.1 ± 11.4 kg, height: 195.83 ± 9.6 cm) completed a graded treadmill exercise test and the TIVRE-Basket within 72 hours. The mean distance recorded during the TIVRE-Basket test was 4001.8 ± 176.4 m, and mean VO2 peak was 54.7 ± 2.8 ml · kg(-1) · min(-1), and the correlation between the 2 parameters was r = 0.824 (p ≤ 0.001). Linear regression analysis identified TIVRE-Basket distance (in meters) as the only unique predictor of VO2 peak in a single variable plus constant model: VO2 peak = 2.595 + (0.13 × TIVRE-Basket distance [in meters]). Performance on the TIVRE-Basket test accounted for 67.8% of the variance in VO2 peak (t = 8.466, p ≤ 0.001, 95% confidence interval: 0.01-0.016, SEE: 1.61). To address aim 2, 20 male basketball players (age: 26.7 ± 4.2 years, height: 1.94 ± 0.92 cm, weight: 94.0 ± 9.1 kg) performed the TIVRE-Basket test on 2 occasions. There was no significant difference in total distance covered between trial 1 (4138.8 ± 677.3 m) and trial 2 (4188.0 ± 648.8 m; t = 0.5798, p = 0.5688). Mean difference between trials was 49.2 ± 399.5 m, with an intraclass correlation coefficient of 0.85 suggesting a moderate level of reliability. Standardized typical error of measurement was 0.88%, representing a moderate degree of trial-to-trial error, and the Coefficient of Variation (CV) was 6.3%. The TIVRE-Basket test therefore represents a valid and moderately reliable court-based sport-specific test of aerobic power for use with individuals and teams of elite-level male basketball players. Future research is required to ascertain its validity

  2. Validation and Test-Retest Reliability of New Thermographic Technique Called Thermovision Technique of Dry Needling for Gluteus Minimus Trigger Points in Sciatica Subjects and TrPs-Negative Healthy Volunteers

    PubMed Central

    Skorupska, Elżbieta; Rychlik, Michał; Samborski, Włodzimierz

    2015-01-01

    The aim of this study was to assess the validity and test-retest reliability of Thermovision Technique of Dry Needling (TTDN) for the gluteus minimus muscle. TTDN is a new thermography approach used to support trigger points (TrPs) diagnostic criteria by presence of short-term vasomotor reactions occurring in the area where TrPs refer pain. Method. Thirty chronic sciatica patients (n=15 TrP-positive and n=15 TrPs-negative) and 15 healthy volunteers were evaluated by TTDN three times during two consecutive days based on TrPs of the gluteus minimus muscle confirmed additionally by referred pain presence. TTDN employs average temperature (Tavr), maximum temperature (Tmax), low/high isothermal-area, and autonomic referred pain phenomenon (AURP) that reflects vasodilatation/vasoconstriction. Validity and test-retest reliability were assessed concurrently. Results. Two components of TTDN validity and reliability, Tavr and AURP, had almost perfect agreement according to κ (e.g., thigh: 0.880 and 0.938; calf: 0.902 and 0.956, resp.). The sensitivity for Tavr, Tmax, AURP, and high isothermal-area was 100% for everyone, but specificity of 100% was for Tavr and AURP only. Conclusion. TTDN is a valid and reliable method for Tavr and AURP measurement to support TrPs diagnostic criteria for the gluteus minimus muscle when digitally evoked referred pain pattern is present. PMID:26137486

  3. Concurrent validity and test-retest reliability of a global positioning system (GPS) and timing gates to assess sprint performance variables.

    PubMed

    Waldron, Mark; Worsfold, Paul; Twist, Craig; Lamb, Kevin

    2011-12-01

    There has been no previous investigation of the concurrent validity and reliability of the current 5 Hz global positioning system (GPS) to assess sprinting speed or the reliability of integrated GPS-accelerometer technology. In the present study, we wished to determine: (1) the concurrent validity and reliability of a GPS and timing gates to measure sprinting speed or distance, and (2) the reliability of proper accelerations recorded via GPS-accelerometer integration. Nineteen elite youth rugby league players performed two over-ground sprints and were simultaneously assessed using GPS and timing gates. The GPS measurements systematically underestimated both distance and timing gate speed. The GPS measurements were reliable for all variables of distance and speed (coefficient of variation [CV] = 1.62% to 2.3%), particularly peak speed (95% limits of agreement [LOA] = 0.00 ± 0.8 km · h(-1); CV = 0.78%). Timing gates were more reliable (CV = 1% to 1.54%) than equivalent GPS measurements. Accelerometer measurements were least reliable (CV = 4.69% to 5.16%), particularly for the frequency of proper accelerations (95% LOA = 1.00 ± 5.43; CV = 14.12%). Timing gates and GPS were found to reliably assess speed and distance, although the validity of the GPS remains questionable. The error found in accelerometer measurements indicates the limits of this device for detecting changes in performance.

  4. Is One Trial Sufficient to Obtain Excellent Pressure Pain Threshold Reliability in the Low Back of Asymptomatic Individuals? A Test-Retest Study

    PubMed Central

    2016-01-01

    The assessment of pressure pain threshold (PPT) provides a quantitative value related to the mechanical sensitivity to pain of deep structures. Although excellent reliability of PPT has been reported in numerous anatomical locations, its absolute and relative reliability in the lower back region remains to be determined. Because of the high prevalence of low back pain in the general population and because low back pain is one of the leading causes of disability in industrialized countries, assessing pressure pain thresholds over the low back is particularly of interest. The purpose of this study study was (1) to evaluate the intra- and inter- absolute and relative reliability of PPT within 14 locations covering the low back region of asymptomatic individuals and (2) to determine the number of trial required to ensure reliable PPT measurements. Fifteen asymptomatic subjects were included in this study. PPTs were assessed among 14 anatomical locations in the low back region over two sessions separated by one hour interval. For the two sessions, three PPT assessments were performed on each location. Reliability was assessed computing intraclass correlation coefficients (ICC), standard error of measurement (SEM) and minimum detectable change (MDC) for all possible combinations between trials and sessions. Bland-Altman plots were also generated to assess potential bias in the dataset. Relative reliability for both intra- and inter- session was almost perfect with ICC ranged from 0.85 to 0.99. With respect to the intra-session, no statistical difference was reported for ICCs and SEM regardless of the conducted comparisons between trials. Conversely, for inter-session, ICCs and SEM values were significantly larger when two consecutive PPT measurements were used for data analysis. No significant difference was observed for the comparison between two consecutive measurements and three measurements. Excellent relative and absolute reliabilities were reported for both intra

  5. Optimization of rs-fMRI Pre-processing for Enhanced Signal-Noise Separation, Test-Retest Reliability, and Group Discrimination.

    PubMed

    Shirer, William R; Jiang, Heidi; Price, Collin M; Ng, Bernard; Greicius, Michael D

    2015-08-15

    Resting-state functional magnetic resonance imaging (rs-fMRI) has become an increasingly important tool in mapping the functional networks of the brain. This tool has been used to examine network changes induced by cognitive and emotional states, neurological traits, and neuropsychiatric disorders. However, noise that remains in the rs-fMRI data after preprocessing has limited the reliability of individual-subject results, wherein scanner artifacts, subject movements, and other noise sources induce non-neural temporal correlations in the blood oxygen level-dependent (BOLD) timeseries. Numerous preprocessing methods have been proposed to isolate and remove these confounds; however, the field has not coalesced around a standard preprocessing pipeline. In comparisons, these preprocessing methods are often assessed with only a single metric of rs-fMRI data quality, such as reliability, without considering other aspects in tandem, such as signal-to-noise ratio and group discriminability. The present study seeks to identify the data preprocessing pipeline that optimizes rs-fMRI data across multiple outcome measures. Specifically, we aim to minimize the noise in the data and maximize result reliability, while retaining the unique features that characterize distinct groups. We examine how these metrics are influenced by bandpass filter selection and noise regression in four datasets, totaling 181 rs-fMRI scans and 38 subject-driven memory scans. Additionally, we perform two different rs-fMRI analysis methods - dual regression and region-of-interest based functional connectivity - and highlight the preprocessing parameters that optimize both approaches. Our results expand upon previous reports of individual-scan reliability, and demonstrate that preprocessing parameter selection can significantly change the noisiness, reliability, and heterogeneity of rs-fMRI data. The application of our findings to rs-fMRI data analysis should improve the validity and reliability of rs

  6. Long-term test-retest reliability of the P3 NoGo wave and two independent components decomposed from the P3 NoGo wave in a visual Go/NoGo task.

    PubMed

    Brunner, Jan Ferenc; Hansen, Tor Ivar; Olsen, Alexander; Skandsen, Toril; Håberg, Asta; Kropotov, Juri

    2013-07-01

    The objective of the current study was to determine long-term test-retest reliability of the P3 NoGo wave as well as two independent components (IC P3 NoGo early and IC P3 NoGo late) decomposed from this wave by independent component analysis (ICA). For this purpose 19-channel EEG was recorded during a cued visual Go/NoGo task. First, spatial filters of the two independent components (ICs) were obtained by application of ICA to ERPs of 102 healthy adults. Second, in 26 individuals, ERPs were recorded from the same task a second time 6-18 months after the first recording. Statistical analyses were performed on both the P3 NoGo waves and the activation curves of the two ICs from both recordings. Amplitude and latency were estimated by "peak" and "fractional area" (FA) methods for both the P3 NoGo wave and ICs. Intraclass correlations (ICC) for latency were excellent (ICC>.90) for both the P3 NoGo wave and the two ICs when measured with the FA method, and good (ICC>.75) for amplitude measured by both methods (FA or peak). We conclude that the long-term stability of P3 NoGo wave and the two IC makes them well suited for reliable assessment of cognitive control function in research and clinic.

  7. Test-retest reliability of high angular resolution diffusion imaging acquisition within medial temporal lobe connections assessed via tract based spatial statistics, probabilistic tractography and a novel graph theory metric.

    PubMed

    Kuhn, T; Gullett, J M; Nguyen, P; Boutzoukas, A E; Ford, A; Colon-Perez, L M; Triplett, W; Carney, P R; Mareci, T H; Price, C C; Bauer, R M

    2016-06-01

    This study examined the reliability of high angular resolution diffusion tensor imaging (HARDI) data collected on a single individual across several sessions using the same scanner. HARDI data was acquired for one healthy adult male at the same time of day on ten separate days across a one-month period. Environmental factors (e.g. temperature) were controlled across scanning sessions. Tract Based Spatial Statistics (TBSS) was used to assess session-to-session variability in measures of diffusion, fractional anisotropy (FA) and mean diffusivity (MD). To address reliability within specific structures of the medial temporal lobe (MTL; the focus of an ongoing investigation), probabilistic tractography segmented the Entorhinal cortex (ERc) based on connections with Hippocampus (HC), Perirhinal (PRc) and Parahippocampal (PHc) cortices. Streamline tractography generated edge weight (EW) metrics for the aforementioned ERc connections and, as comparison regions, connections between left and right rostral and caudal anterior cingulate cortex (ACC). Coefficients of variation (CoV) were derived for the surface area and volumes of these ERc connectivity-defined regions (CDR) and for EW across all ten scans, expecting that scan-to-scan reliability would yield low CoVs. TBSS revealed no significant variation in FA or MD across scanning sessions. Probabilistic tractography successfully reproduced histologically-verified adjacent medial temporal lobe circuits. Tractography-derived metrics displayed larger ranges of scanner-to-scanner variability. Connections involving HC displayed greater variability than metrics of connection between other investigated regions. By confirming the test retest reliability of HARDI data acquisition, support for the validity of significant results derived from diffusion data can be obtained.

  8. Test-Retest Reliability of High Angular Resolution Diffusion Imaging Acquisition within Medial Temporal Lobe Connections Assessed via Tract Based Spatial Statistics, Probabilistic Tractography and a Novel Graph Theory Metric

    PubMed Central

    Kuhn, T.; Gullett, J. M.; Nguyen, P.; Boutzoukas, A. E.; Ford, A.; Colon-Perez, L. M.; Triplett, W.; Carney, P.R.; Mareci, T. H.; Price, C. C.; Bauer, R. M.

    2015-01-01

    Introduction This study examined the reliability of high angular resolution diffusion tensor imaging (HARDI) data collected on a single individual across several sessions using the same scanner. Methods HARDI data was acquired for one healthy adult male at the same time of day on ten separate days across a one-month period. Environmental factors (e.g. temperature) were controlled across scanning sessions. Tract Based Spatial Statistics (TBSS) was used to assess session-to-session variability in measures of diffusion, fractional anisotropy (FA) and mean diffusivity (MD). To address reliability within specific structures of the medial temporal lobe (MTL; the focus of an ongoing investigation), probabilistic tractography segmented the Entorhinal cortex (ERc) based on connections with Hippocampus (HC), Perirhinal (PRc) and Parahippocampal (PHc) cortices. Streamline tractography generated edge weight (EW) metrics for the aforementioned ERc connections and, as comparison regions, connections between left and right rostral and caudal anterior cingulate cortex (ACC). Coefficients of variation (CoV) were derived for the surface area and volumes of these ERc connectivity-defined regions (CDR) and for EW across all ten scans, expecting that scan-to-scan reliability would yield low CoVs. Results TBSS revealed no significant variation in FA or MD across scanning sessions. Probabilistic tractography successfully reproduced histologically-verified adjacent medial temporal lobe circuits. Tractography-derived metrics displayed larger ranges of scanner-to-scanner variability. Connections involving HC displayed greater variability than metrics of connection between other investigated regions. Conclusions By confirming the test retest reliability of HARDI data acquisition, support for the validity of significant results derived from diffusion data can be obtained. PMID:26189060

  9. Intra-session test-retest reliability of magnitude and structure of center of pressure from the Nintendo Wii Balance Board™ for a visually impaired and normally sighted population.

    PubMed

    Jeter, Pamela E; Wang, Jiangxia; Gu, Jialiang; Barry, Michael P; Roach, Crystal; Corson, Marilyn; Yang, Lindsay; Dagnelie, Gislin

    2015-02-01

    Individuals with visual impairment (VI) have irreparable damage to one of the input streams contributing to postural stability. Here, we evaluated the intra-session test-retest reliability of the Wii Balance Board (WBB) for measuring Center of Pressure (COP) magnitude and structure, i.e. approximate entropy (ApEn) in fourteen legally blind participants and 21 participants with corrected-to-normal vision. Participants completed a validated balance protocol which included four sensory conditions: double-leg standing on a firm surface with eyes open (EO-firm); a firm surface with eyes closed (EC-firm); a foam surface with EO (EO-foam); and a foam surface with EC (EC-foam). Participants performed the full balance protocol twice during the session, separated by a period of 15min, to determine the intraclass correlation coefficient (ICC). Absolute reliability was determined by the standard error of measurement (SEM). The minimal difference (MD) was estimated to determine clinical significance for future studies. COP measures were derived from data sent by the WBB to a laptop via Bluetooth. COP scores increased with the difficulty of sensory condition indicating WBB sensitivity (all p<0.01). ICCs in the VI group ranged from 0.73 to 0.95, indicating high to very high correlations, and the normal group showed moderate to very high ICCs (0.62-0.94). The SEM was comparable between groups regardless of between-subject variability. The reliability of the WBB makes it practical to screen for balance impairment among VI persons.

  10. Intra-session test-retest reliability of magnitude and structure of center of pressure from the Nintendo Wii Balance Board™ for a visually impaired and normally sighted population

    PubMed Central

    Jeter, Pamela E.; Wang, Jiangxia; Gu, Jialiang; Barry, Michael P.; Roach, Crystal; Corson, Marilyn; Yang, Liancheng; Dagnelie, Gislin

    2014-01-01

    Individuals with visual impairment (VI) have irreparable damage to one of the input streams contributing to postural stability. Here, we evaluated the intra-session test-retest reliability of the Wii Balance Board (WBB) for measuring Center of Pressure (COP) magnitude and structure, i.e. approximate entropy (ApEn) in fourteen legally blind participants and 21 participants with corrected-to-normal vision. Participants completed a validated balance protocol which included four sensory conditions: double-leg standing on a firm surface with eyes open (EO-firm); a firm surface with eyes closed (EC-firm); a foam surface with EO (EO-foam); and a foam surface with EC (EC-foam). Participants performed the full balance protocol twice during the session, separated by a period of 15 minutes, to determine the intraclass correlation coefficient (ICC). Absolute reliability was determined by the standard of measurement (SEM). The minimal difference (MD) was estimated to determine clinical significance for future studies. COP measures were derived from data sent by the WBB to a laptop via Bluetooth. COP scores increased with the difficulty of sensory condition indicating WBB sensitivity (all p < 0.01). ICCs in the VI group ranged from 0.73 to 0.95, indicating high to very high correlations, and the normal group showed moderate to very high ICCs (0.62–0.94). The SEM was comparable between groups regardless of between-subject variability. The reliability of the WBB makes it practical to screen for balance impairment among VI persons. PMID:25555361

  11. Test-retest reliability and discriminant validity for the Brazilian version of “The Interstitial Cystitis Symptom Index and Problem Index” and “Pelvic Pain and Urgency/Frequency (PUF) Patient Symptom Scale” instruments

    PubMed Central

    D’Ancona, Carlos Arturo Levi; Junqueira, Roberto Gomes; Carlos da Silva, Daniel; Oliveira, Henrique Ceretta; de Moraes Lopes, Maria Helena Baena

    2015-01-01

    Background The purpose is to evaluate the psychometric properties of reliability and discriminant validity of the Brazilian Portuguese versions of two instruments used in the diagnosis of interstitial cystitis (IC): “The Interstitial Cystitis Symptom Index and Problem Index” (The O’Leary-Sant), and “Pelvic Pain and Urgency/Frequency (PUF) Patient Symptom Scale”. Methods Three groups of patients were examined: a study group (subjects with IC), control group 1 (individuals with at least one IC symptom), and control group 2 (subjects without IC symptoms). Test-retest stability was evaluated at intervals of 3 to 7 days in the study group. Discriminant validity was examined in all three groups. Results The intraclass correlation coefficient (ICC) [95% confidence interval (CI)] results were 0.56 (range, 0.21-0.78) for The O’Leary-Sant Symptom Index, 0.48 (range, 0.10-0.73) for The O’Leary-Sant Problem Index, and 0.49 (range, 0.12-0.74) for the PUF. To analyze discriminant validity between groups, we used Fisher’s exact test and odd ratio (OR) to identify differences. We obtained a P value<0.0001, which indicated that the null hypothesis was rejected; in other words, there was evidence that at least two different groups were compared to the proportion of patients with IC. Conclusions The analyzed instruments did not reach appropriate values for reliability. Future studies are needed to analyze the psychometric measures of these instruments on a larger sample of patients with IC. PMID:26813711

  12. Comparability and Reliability Considerations of Adequate Yearly Progress

    ERIC Educational Resources Information Center

    Maier, Kimberly S.; Maiti, Tapabrata; Dass, Sarat C.; Lim, Chae Young

    2012-01-01

    The purpose of this study is to develop an estimate of Adequate Yearly Progress (AYP) that will allow for reliable and valid comparisons among student subgroups, schools, and districts. A shrinkage-type estimator of AYP using the Bayesian framework is described. Using simulated data, the performance of the Bayes estimator will be compared to…

  13. Test-retest repeatability of the Strain Index.

    PubMed

    Stephens, John-Paul; Vos, Gordon A; Stevens, Edward M; Moore, J Steven

    2006-05-01

    Fifteen raters individually, and in five teams of three, evaluated the test-retest repeatability of published data collection and rating methods of the Strain Index by analyzing 61 job video files twice over a 5-month period. Raters estimated average and peak hand forces, measured Duration of Exertion, cycle time, and exertions per job cycle, calculated percent Duration of Exertion and Efforts per Minute, and assigned ratings for five of the six Strain Index task variables. Twelve additional jobs were analyzed to determine Strain Index Score and hazard classification. Intraclass correlation (ICC) coefficients for task variable ratings and accompanying data ranged from 0.66 to 0.95 for both individuals and teams. The Strain Index Score ICC(2,1) for individuals and teams were 0.56 and 0.82, respectively. Intra-rater reliability for the hazard classification was 0.81 for individuals and 0.88 for teams. The results indicate that the Strain Index has good test-retest reliability.

  14. Temporal stability of the Francis Scale of Attitude toward Christianity short-form: test-retest data over one week.

    PubMed

    Lewis, Christopher Alan; Cruise, Sharon Mary; McGuckin, Conor

    2005-04-01

    This study evaluated the test-retest reliability of the Francis Scale of Attitude toward Christianity short-form. 39 Northern Irish undergraduate students completed the measure on two occasions separated by one week. Stability across the two administrations was high, r = .92, and there was no significant change between Time 1(M = 25.2, SD = 5.4) and Time 2 (M = 25.7, SD = 6.2). These data support the short-term test-retest reliability of the Francis Scale of Attitude toward Christianity short-form.

  15. Test-Retest Stability of Word Retrieval in Aphasic Discourse

    ERIC Educational Resources Information Center

    Boyle, Mary

    2014-01-01

    Purpose: This study examined the test-retest stability of select word-retrieval measures in the discourses of people with aphasia who completed a 5-stimulus discourse task. Method: Discourse samples across 3 sessions from 12 individuals with aphasia were analyzed for the stability of measures of informativeness, efficiency, main concepts, noun and…

  16. A connectivity-based test-retest dataset of multi-modal magnetic resonance imaging in young healthy adults.

    PubMed

    Lin, Qixiang; Dai, Zhengjia; Xia, Mingrui; Han, Zaizhu; Huang, Ruiwang; Gong, Gaolang; Liu, Chao; Bi, Yanchao; He, Yong

    2015-01-01

    Recently, magnetic resonance imaging (MRI) has been widely used to investigate the structures and functions of the human brain in health and disease in vivo. However, there are growing concerns about the test-retest reliability of structural and functional measurements derived from MRI data. Here, we present a test-retest dataset of multi-modal MRI including structural MRI (S-MRI), diffusion MRI (D-MRI) and resting-state functional MRI (R-fMRI). Fifty-seven healthy young adults (age range: 19-30 years) were recruited and completed two multi-modal MRI scan sessions at an interval of approximately 6 weeks. Each scan session included R-fMRI, S-MRI and D-MRI data. Additionally, there were two separated R-fMRI scans at the beginning and at the end of the first session (approximately 20 min apart). This multi-modal MRI dataset not only provides excellent opportunities to investigate the short- and long-term test-retest reliability of the brain's structural and functional measurements at the regional, connectional and network levels, but also allows probing the test-retest reliability of structural-functional couplings in the human brain.

  17. Test-retest paradigm of the forced swimming test in female mice is not valid for predicting antidepressant-like activity: participation of acetylcholine and sigma-1 receptors.

    PubMed

    Su, Jing; Hato-Yamada, Noriko; Araki, Hiroaki; Yoshimura, Hiroyuki

    2013-01-01

    The forced swimming test (FST) in mice is widely used to predict the antidepressant activity of a drug, but information describing the immobility of female mice is limited. We investigated whether a prior swimming experience affects the immobility duration in a second FST in female mice and whether the test-retest paradigm is a valid screening tool for antidepressants. Female ICR mice were exposed to the FST using two experimental paradigms: a single FST and a double FST in which mice had experienced FST once 24 h prior to the second trail. The initial FST experience reliably prolonged immobility duration in the second FST. The antidepressants imipramine and paroxetine significantly reduced immobility duration in the single FST, but not in the double FST. Scopolamine and the sigma-1 (σ1) antagonist NE-100 administered before the second trial significantly prevented the prolongation of immobility. Neither a 5-HT1A nor a 5-HT2A receptor agonist affected immobility duration. We suggest that the test-retest paradigm in female mice is not adequate for predicting antidepressant-like activity of a drug; the prolongation of immobility in the double FST is modulated through acetylcholine and σ1 receptors.

  18. Assessment of Alcohol and Other Drug Use by Runaway Youths: A Test-Retest Study of the Form 90.

    PubMed

    Slesnick, Natasha; Tonigan, J Scott

    2004-06-21

    While excellent adolescent alcohol and drug screening tools are available, there are relatively few, if any, psychometrically validated measures to use in the assessment of adolescent treatment outcome. This study conducted a test-retest exercise of the Form 90 Drug and Alcohol (Form 90 DnA) to determine the stability of adolescent responses when administering the day-by-day calendar/grid approach. Homeless youth (N = 37) with alcohol, drug, or alcohol and drug abuse/dependence combined were recruited to participate in the test-retest study. High pre-post stability in means was obtained on measures of frequency of substance use in general, and on specific measures of alcohol, cocaine, marijuana use. The findings from this paper provide support for the reliability and validity of the Form 90 for use with adolescent runaways with a substance abuse or dependence diagnosis.

  19. Reliability and Validity of a Self-Concept Scale for Researchers in Family Relationships

    ERIC Educational Resources Information Center

    Rathus, Spencer A.; Siegel, Larry J.

    1976-01-01

    Self-concept questionnaire was shown to have high test-retest reliability, but only fair to moderate split-half (odd-even) reliability. Validity was adequate. The scale will serve as a heuristic device for family counselors who require a rapid assessment of a child's self-esteem. (Author)

  20. Reliability of the UCLA Loneliness Scale in opiate dependent individuals.

    PubMed

    Britton, Peter C; Conner, Kenneth R

    2007-06-01

    The purpose of this study was to examine the internal consistency and test-retest reliability of the self-report University of California, Los Angeles, Loneliness Scale (UCLA LS; Russell, 1996) in methadone maintenance patients at an urban university hospital. A diverse sample of 117 patient volunteers completed a standardized interview that included the UCLA LS. A total of 67 participants returned after a minimum of 14 days for a follow-up session to complete an identical assessment but with a different researcher. We examined internal consistency and test-retest reliability in the total sample and in groups stratified by gender, race, ethnicity, and education. Across strata, the UCLA LS showed adequate to high internal consistency and good to excellent test-retest reliability. The UCLA LS was highly correlated with a measure of perceived belonging, supporting criterion validity. Findings support the use of the UCLA LS with methadone maintenance patients.

  1. The Relation between Information-Processing Variables and Test-Retest Stability for Questionnaire Items.

    ERIC Educational Resources Information Center

    Otter, Martha E.; And Others

    1995-01-01

    The ability of 2 components, interpretation of a question and memory, to forecast the test-retest association coefficients of reading test items was studied with initial samples of 916 elementary and 949 secondary school students. For both populations, both components forecast the relative sizes of test-retest correlation coefficients. (SLD)

  2. Stability of FDG-PET Radiomics features: An integrated analysis of test-retest and inter-observer variability

    PubMed Central

    LEIJENAR, RALPH T. H.; CARVALHO, SARA; ZQUEZ, EMMANUEL RIOS VELA; VAN ELMPT, WOUTER J. C.; PARMAR, CHINTAN; HOEKSTRA, OTTO S.; HOEKSTRA, CORNELINE J.; BOELARD, RONALD; DEKKER, ANDRÉ L. A. J.; GILLIES, ROBERT J.; AERTS, HUGO J. W. L.; LAMBIN, PHILIPPE

    2015-01-01

    Purpose Besides basic measurements as maximum standardized uptake value (SUV)max or SUVmean derived from 18F-FDG positron emission tomography (PET) scans, more advanced quantitative imaging features (i.e. “Radiomics” features) are increasingly investigated for treatment monitoring, outcome prediction, or as potential biomarkers. With these prospected applications of Radiomics features, it is a requisite that they provide robust and reliable measurements. The aim of our study was therefore to perform an integrated stability analysis of a large number of PET-derived features in non-small cell lung carcinoma (NSCLC), based on both a test-retest and an inter-observer setup. Methods Eleven NSCLC patients were included in the test-retest cohort. Patients underwent repeated PET imaging within a one day interval, before any treatment was delivered. Lesions were delineated by applying a threshold of 50% of the maximum uptake value within the tumor. Twenty-three NSCLC patients were included in the inter-observer cohort. Patients underwent a diagnostic whole body PET-computed tomography (CT). Lesions were manually delineated based on fused PET-CT, using a standardized clinical delineation protocol. Delineation was performed independently by five observers, blinded to each other. Fifteen first order statistics, 39 descriptors of intensity volume histograms, eight geometric features and 44 textural features were extracted. For every feature, test-retest and inter-observer stability was assessed with the intra-class correlation coefficient (ICC) and the coefficient of variability, normalized to mean and range. Similarity between test-retest and inter-observer stability rankings of features was assessed with Spearman’s rank correlation coefficient. Results Results showed that the majority of assessed features had both a high test-retest (71%) and inter-observer (91%) stability in terms of their ICC. Overall, features more stable in repeated PET imaging were also found to be

  3. Longitudinal test-retest neuroimaging data from healthy young adults in southwest China

    PubMed Central

    Liu, Wei; Wei, Dongtao; Chen, Qunlin; Yang, Wenjing; Meng, Jie; Wu, Guorong; Bi, Taiyong; Zhang, Qinglin; Zuo, Xi-Nian; Qiu, Jiang

    2017-01-01

    Multimodal magnetic resonance imaging (mMRI) has been widely used to map the structure and function of the human brain, as well as its behavioral associations. However, to date, a large sample with a long-term longitudinal design and a narrow age-span has been lacking for the assessment of test-retest reliability and reproducibility of brain-behavior correlations, as well as the development of novel causal insights into these correlational findings. Here we describe the SLIM dataset, which includes brain and behavioral data across a long-term retest-duration within three and a half years, mMRI scans provided a set of structural, diffusion and resting-state functional MRI images, along with rich samples of behavioral assessments addressed—demographic, cognitive and emotional information. Together with the Consortium for Reliability and Reproducibility (CoRR), the SLIM is expected to accelerate the reproducible sciences of the human brain by providing an open resource for brain-behavior discovery sciences with big-data approaches. PMID:28195583

  4. WIDE RANGE ACHIEVEMENT TEST IN AUTISM SPECTRUM DISORDER: TEST-RETEST STABILITY.

    PubMed

    Jantz, Paul B; Bigler, Erin D; Froehlich, Alyson L; Prigge, Molly B D; Cariello, Annahir N; Travers, Brittany G; Anderson, Jeffrey; Zielinski, Brandon A; Alexander, Andrew L; Lange, Nicholas; Lainhart, Janet E

    2015-06-01

    The principal goal of this descriptive study was to establish the test-retest stability of the Reading, Spelling, and Arithmetic subtest scores of the Wide Range Achievement Test (WRAT-3) across two administrations in individuals with autism spectrum disorder. Participants (N = 31) were males ages 6-22 years (M = 15.2, SD = 4.0) who were part of a larger ongoing longitudinal study of brain development in children and adults with autism spectrum disorder (N = 185). Test-retest stability for all three subtests remained consistent across administration periods (M = 31.8 mo., SD = 4.1). Age at time of administration, time between administrations, and test form did not significantly influence test-retest stability. Results indicated that for research involving individuals with autism spectrum disorder with a full scale intelligence quotient above 75, the WRAT-3 Spelling and Arithmetic subtests have acceptable test-retest stability over time and the Reading subtest has moderate test-retest stability over time.

  5. Measurement of serotonin transporter binding with PET and [11C]MADAM: a test-retest reproducibility study.

    PubMed

    Lundberg, Johan; Halldin, Christer; Farde, Lars

    2006-09-01

    [(11)C]MADAM, or [(11)C]N,N-dimethyl-2-(2-amino-4-methylphenyl thio)benzylamine, is a radioligand suitable for positron emission tomography (PET) studies of the serotonin transporter (5-HTT) in man. The purpose of this study was to examine the test-retest reproducibility using a design tailored for future applied studies. Nine healthy male subjects were examined with PET and [(11)C]MADAM under baseline conditions at two occasions 4-8 weeks apart. The subjects participated in a Phase 1 trial to which the present study was an addendum. Eight regions of interest were studied, including frontal cortex, hippocampal complex, and the raphe nuclei. All regions, but the raphe nuclei, were defined on MR-images to which the PET-images were coregistered using SPM2. Binding potentials were calculated using the simplified reference tissue model, with cerebellum as reference region. Test-retest data were calculated from the binding potentials, and included binding potential (BP) quotient, BP difference, and the intraclass correlation coefficient. The quotient was about one in all regions, and the mean difference varied between 0 and 11%. The intraclass correlation coefficient varied between 0.96 and 0.51 in the raphe nuclei and averaged bilateral regions. [(11)C]MADAM was shown to have good to excellent reliability in measurements of 5-HTT binding in brain regions of interest in research on psychiatric disorders.

  6. The Screening Test for Emotional Problems--Teacher-Report Version (Step-T): Studies of Reliability and Validity

    ERIC Educational Resources Information Center

    Erford, Bradley T.; Butler, Caitlin; Peacock, Elizabeth

    2015-01-01

    The Screening Test for Emotional Problems-Teacher Version (STEP-T) was designed to identify students aged 7-17 years with wide-ranging emotional disturbances. Coefficients alpha and test-retest reliability were adequate for all subscales except Anxiety. The hypothesized five-factor model fit the data very well and external aspects of validity were…

  7. Test-Retest Reproducibility of Two Short-Form Balance Measures Used in Individuals with Stroke

    ERIC Educational Resources Information Center

    Liaw, Lih-Jiun; Hsieh, Ching-Lin; Hsu, Miao-Ju; Chen, Hui-Mei; Lin, Jau-Hong; Lo, Sing-Kai

    2012-01-01

    The aim of this study is to determine the test-retest reproducibility of the seven-item Short-Form Berg Balance Scale (SFBBS) and the five-item Short-Form Postural Assessment Scale for Stroke Patients (SFPASS) in individuals with chronic stroke. Fifty-two chronic stroke patients from two rehabilitation departments were included in the study. Both…

  8. A Comprehensive Approach for Assessing Person Fit with Test-Retest Data

    ERIC Educational Resources Information Center

    Ferrando, Pere J.

    2014-01-01

    Item response theory (IRT) models allow model-data fit to be assessed at the individual level by using person-fit indices. This assessment is also feasible when IRT is used to model test-retest data. However, person-fit developments for this type of modeling are virtually nonexistent. This article proposes a general person-fit approach for…

  9. Test-Retest Stability of the Task and Ego Orientation Questionnaire

    ERIC Educational Resources Information Center

    Lane, Andrew M.; Nevill, Alan M.; Bowes, Neal; Fox, Kenneth R.

    2005-01-01

    Establishing stability, defined as observing minimal measurement error in a test-retest assessment, is vital to validating psychometric tools. Correlational methods, such as Pearson product-moment, intraclass, and kappa are tests of association or consistency, whereas stability or reproducibility (regarded here as synonymous) assesses the…

  10. Test-Retest Changes on Scholastic Aptitude Tests Are Not Related to "g"

    ERIC Educational Resources Information Center

    Coyle, Thomas R.

    2006-01-01

    This research examined the relation between test-retest changes on scholastic aptitude tests and g-loaded cognitive measures (viz., college grade-point average, Wonderlic Personnel Test, and word recall). University students who had twice taken a scholastic aptitude test (viz., Scholastic Assessment Test or American College Testing Program…

  11. A Combined IRT and SEM Approach for Individual-Level Assessment in Test-Retest Studies

    ERIC Educational Resources Information Center

    Ferrando, Pere J.

    2015-01-01

    The standard two-wave multiple-indicator model (2WMIM) commonly used to analyze test-retest data provides information at both the group and item level. Furthermore, when applied to binary and graded item responses, it is related to well-known item response theory (IRT) models. In this article the IRT-2WMIM relations are used to obtain additional…

  12. Test-Retest of Long Latency Auditory Evoked Potentials (P300) with Pure Tone and Speech Stimuli.

    PubMed

    Perez, Ana Paula; Ziliotto, Karin; Pereira, Liliane Desgualdo

    2017-04-01

    Introduction Long latency auditory evoked potentials, especially P300, have been used for clinical evaluation of mental processing. Many factors can interfere with Auditory Evoked Potential - P300 results, suggesting large intra and inter-subject variations. Objective The objective of the study was to identify the reliability of P3 components (latency and amplitude) over 4-6 weeks and the most stable auditory stimulus with the best test-retest agreement. Methods Ten normal-hearing women participated in the study. Only subjects without auditory processing problems were included. To determine the P3 components, we elicited long latency auditory evoked potential (P300) by pure tone and speech stimuli, and retested after 4-6 weeks using the same parameters. We identified P300 latency and amplitude by waveform subtraction. Results We found lower coefficient of variation values in latency than in amplitude, with less variability analysis when speech stimulus was used. There was no significant correlation in latency measures between pure tone and speech stimuli, and sessions. There was a significant intrasubject correlation between measures of latency and amplitude. Conclusion These findings show that amplitude responses are more robust for the speech stimulus when compared with its pure tone counterpart. The P300 indicated stability for latency and amplitude measures when the test-retest was applied. Reliability was higher for amplitude than for latency, with better agreement when the pure tone stimulus was used. However, further research with speech stimulus is needed to clarify how these stimuli are processed by the nervous system.

  13. Test-Retest of Long Latency Auditory Evoked Potentials (P300) with Pure Tone and Speech Stimuli

    PubMed Central

    Perez, Ana Paula; Ziliotto, Karin; Pereira, Liliane Desgualdo

    2016-01-01

    Introduction Long latency auditory evoked potentials, especially P300, have been used for clinical evaluation of mental processing. Many factors can interfere with Auditory Evoked Potential - P300 results, suggesting large intra and inter-subject variations. Objective The objective of the study was to identify the reliability of P3 components (latency and amplitude) over 4–6 weeks and the most stable auditory stimulus with the best test-retest agreement. Methods Ten normal-hearing women participated in the study. Only subjects without auditory processing problems were included. To determine the P3 components, we elicited long latency auditory evoked potential (P300) by pure tone and speech stimuli, and retested after 4–6 weeks using the same parameters. We identified P300 latency and amplitude by waveform subtraction. Results We found lower coefficient of variation values in latency than in amplitude, with less variability analysis when speech stimulus was used. There was no significant correlation in latency measures between pure tone and speech stimuli, and sessions. There was a significant intrasubject correlation between measures of latency and amplitude. Conclusion These findings show that amplitude responses are more robust for the speech stimulus when compared with its pure tone counterpart. The P300 indicated stability for latency and amplitude measures when the test-retest was applied. Reliability was higher for amplitude than for latency, with better agreement when the pure tone stimulus was used. However, further research with speech stimulus is needed to clarify how these stimuli are processed by the nervous system. PMID:28382119

  14. Test-retest reproducibility of binding parameters in humans with 11C-LY2795050, an antagonist PET radiotracer for the kappa opioid receptor

    PubMed Central

    Naganawa, Mika; Zheng, Ming-Qiang; Henry, Shannan; Nabulsi, Nabeel; Lin, Shu-Fei; Ropchan, Jim; Labaree, David; Najafzadeh, Soheila; Kapinos, Michael; Tauscher, Johannes; Neumeister, Alexander; Carson, Richard E.; Huang, Yiyun

    2015-01-01

    11C-LY2795050 is a new antagonist PET radioligand for the kappa opioid receptor (KOR). In this study, we assessed the reproducibility of the binding parameters of 11C-LY2795050 in healthy human subjects. Methods Sixteen healthy subjects (11 men, 5 women) underwent two separate 90-min PET scans with arterial input function and plasma free fraction measurements. The two-tissue compartment model and multilinear analysis-1 were applied to calculate five outcome measures in 14 brain regions: distribution volume (VT), distribution volume normalized by plasma free fraction (VT/fP), and three binding potentials (BPND, BPP, BPF). Since KOR is distributed ubiquitously throughout the brain, there are no suitable reference regions. We used a fixed fraction of individual cerebellum VT value as the non-displaceable distribution volume VND (= VT CER/1.17). The relative and absolute test-retest variability and intra-class correlation coefficient were evaluated for the outcome measures of 11C-LY2795050. Results The test-retest variability of 11C-LY2795050 for VT was ≤ 10% in all regions, and 12% in the amygdala. For binding potentials (BPND and BPP), the test-retest variability was good in regions of moderate and high KOR density (BPND > 0.4) and poor in regions of low density. Correction by fP (VT/fP or BPF) did not improve the test-retest performance. Conclusion Our results suggest that quantification of 11C-LY2795050 imaging is reproducible and reliable in the regions with moderate and high KOR density. Therefore we conclude that this first antagonist radiotracer is highly useful for PET studies of KOR. PMID:25593119

  15. Test-retest assessment of cortical activation induced by repetitive transcranial magnetic stimulation with brain atlas-guided optical topography

    NASA Astrophysics Data System (ADS)

    Tian, Fenghua; Kozel, F. Andrew; Yennu, Amarnath; Croarkin, Paul E.; McClintock, Shawn M.; Mapes, Kimberly S.; Husain, Mustafa M.; Liu, Hanli

    2012-11-01

    Repetitive transcranial magnetic stimulation (rTMS) is a technology that stimulates neurons with rapidly changing magnetic pulses with demonstrated therapeutic applications for various neuropsychiatric disorders. Functional near-infrared spectroscopy (fNIRS) is a suitable tool to assess rTMS-evoked brain responses without interference from the magnetic or electric fields generated by the TMS coil. We have previously reported a channel-wise study of combined rTMS/fNIRS on the motor and prefrontal cortices, showing a robust decrease of oxygenated hemoglobin concentration (Δ[HbO2]) at the sites of 1-Hz rTMS and the contralateral brain regions. However, the reliability of this putative clinical tool is unknown. In this study, we develop a rapid optical topography approach to spatially characterize the rTMS-evoked hemodynamic responses on a standard brain atlas. A hemispherical approximation of the brain is employed to convert the three-dimensional topography on the complex brain surface to a two-dimensional topography in the spherical coordinate system. The test-retest reliability of the combined rTMS/fNIRS is assessed using repeated measurements performed two to three days apart. The results demonstrate that the Δ[HbO2] amplitudes have moderate-to-high reliability at the group level; and the spatial patterns of the topographic images have high reproducibility in size and a moderate degree of overlap at the individual level.

  16. Test-retest reliability of jump execution variables using mechanography: A comparison of jump protocols

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Mechanography during the vertical jump test allows for evaluation of force-time variables reflecting jump execution, which may enhance screening for functional deficits that reduce physical performance and determining mechanistic causes underlying performance changes. However, utility of jump mechan...

  17. Wideband Acoustic Immittance: Normative Study and Test-Retest Reliability of Tympanometric Measurements in Adults

    ERIC Educational Resources Information Center

    Sun, Xiao-Ming

    2016-01-01

    Purpose: The purpose of this study was to present normative data of tympanometric measurements of wideband acoustic immittance and to characterize wideband tympanograms. Method: Data were collected in 84 young adults with strictly defined normal hearing and middle ear status. Energy absorbance (EA) was measured using clicks for 1/12-octave…

  18. Test-Retest Reliability of Independent Measures of Phonology in the Assessment of Toddlers' Speech

    ERIC Educational Resources Information Center

    Morris, Sherrill R.

    2009-01-01

    Purpose: The purpose of this study was to assess the temporal stability of 5 independent measures of phonological skill: phonetic inventory (initial, final), word shape, syllable structure level, and the index of phonetic complexity. Method: Ten toddlers with typical development participated in two 20-min play sessions within a 1-week period.…

  19. Test-Retest Reliability of Individual Differences in Dual-Task Performance.

    DTIC Science & Technology

    1978-07-01

    separate and combined performances of a one-dimensional tracking and a digit - processing, reaction-time task. FINDINGS The data from this study indicate...represented by tracking and digit processing. Furthermore, separate K task performances were generally unrelated to the subsequent decrement scores in dual...discrete, digit -processing, reaction-time task. Furthermore, there were low and nonreliable correlations between single-task performances, and generally low

  20. Test-Retest Reliability of Two Patient-Report Measures for Use in Adults with ADHD

    ERIC Educational Resources Information Center

    Matza, Louis S.; Van Brunt, David L.; Cates, Charlotte; Murray, Lindsey T.

    2011-01-01

    Aims: Childhood attention-deficit/hyperactivity disorder (ADHD) frequently persists into adulthood and continues to impair health-related quality of life (HRQL). Thus, it is important to have validated symptom and HRQL measures for assessing treatment outcomes in this population. The purpose of the current analysis was to assess test-retest…

  1. Analysis of Test-Retest Reliability for a Battery of Cognitive Speed Tests

    DTIC Science & Technology

    1987-11-01

    IQ, SAT, and reaction time: Interrelationships and theory. Personality and Individual Differences , 7, 6*^3-651. Nettelbeck, T. (1982). Inspection...C, & Vreugdenhil, A. (1986). Inspection time and IQ: Evidence for a mental speed-ability association. Personality and Individual Differences , 7...time approaches to the measurement of speed of information processing and individual differences in intelligence. Personality and Individual Differences , 7

  2. A Diet Score Assessing Norwegian Adolescents’ Adherence to Dietary Recommendations—Development and Test-Retest Reproducibility of the Score

    PubMed Central

    Handeland, Katina; Kjellevold, Marian; Wik Markhus, Maria; Eide Graff, Ingvild; Frøyland, Livar; Lie, Øyvind; Skotheim, Siv; Stormark, Kjell Morten; Dahl, Lisbeth; Øyen, Jannike

    2016-01-01

    Assessment of adolescents’ dietary habits is challenging. Reliable instruments to monitor dietary trends are required to promote healthier behaviours in this group. The purpose of this cross-sectional study was to assess adolescents’ adherence to Norwegian dietary recommendations with a diet score and to report results from, and test-retest reliability of, the score. The diet score involved seven food groups and one physical activity indicator, and was applied to answers from a semi-quantitative food frequency questionnaire (FFQ) administered twice. Reproducibility of the score was assessed with Cohen’s Kappa (κ statistics) at an interval of three months. The setting was eight lower-secondary schools in Hordaland County, Norway, and subjects were adolescents (n = 472) aged 14–15 years and their caregivers. Results showed that the proportion of adolescents consistently classified by the diet score was 87.6% (κ = 0.465). For food groups, proportions ranged from 74.0% to 91.6% (κ = 0.249 to κ = 0.573). Less than 40% of the participants were found to adhere to recommendations for frequencies of eating fruits, vegetables, added sugar, and fish. Highest compliance to recommendations was seen for choosing water as beverage and limit the intake of red meat. The score was associated with parental socioeconomic status. The diet score was found to be reproducible at an acceptable level. Health promoting work targeting adolescents should emphasize to increase the intake of recommended foods to approach nutritional guidelines. PMID:27483312

  3. Imaging the cannabinoid CB1 receptor in humans with [11C]OMAR: assessment of kinetic analysis methods, test-retest reproducibility, and gender differences.

    PubMed

    Normandin, Marc D; Zheng, Ming-Qiang; Lin, Kuo-Shyan; Mason, N Scott; Lin, Shu-Fei; Ropchan, Jim; Labaree, David; Henry, Shannan; Williams, Wendol A; Carson, Richard E; Neumeister, Alexander; Huang, Yiyun

    2015-08-01

    The Radiotracer [(11)C]OMAR was developed for positron emission tomography (PET) imaging of cannabinoid type-1 receptors (CB1R). The objectives of the present study were to evaluate kinetic analysis methods, determine test-retest reliability, and assess gender differences in receptor availability. Dynamic PET data were acquired in 10 human subjects, and analyzed with one-tissue (1T) and two-tissue (2T) compartment models and by the Logan and multilinear analysis (MA1) methods to estimate regional volume of distribution (VT). The 2T model inclusive of a vascular component (2TV) and MA1 were the preferred techniques. Test-retest reliability of VT was good (mean absolute deviation ~9%; intraclass correlation coefficient ~0.7). Tracer parent fraction in plasma was lower in women (P<0.0001). Cerebral uptake normalized by body weight and injected dose was higher in men by 17% (P<0.0001), but VT was significantly greater in women by 23% (P<0.0001). These findings show that [(11)C]OMAR binding can be reliably quantified by the 2T model or MA1 method and demonstrate the utility of this tracer for in vivo imaging of CB1R. In addition, results from the present study indicate that gender difference in receptor binding should be taken into consideration when [(11)C]OMAR is used to quantify CB1R availability in neuropsychiatric disorders.

  4. Test-Retest Repeatability of Myocardial Blood Flow Measurements using Rubidium-82 Positron Emission Tomography

    NASA Astrophysics Data System (ADS)

    Efseaff, Matthew

    Rubidium-82 positron emission tomography (PET) imaging has been proposed for routine myocardial blood flow (MBF) quantification. Few studies have investigated the test-retest repeatability of this method. Same-day repeatability of rest MBF imaging was optimized with a highly automated analysis program using image-derived input functions and a dual spillover correction (SOC). The effects of heterogeneous tracer infusion profiles and subject hemodynamics on test-retest repeatability were investigated at rest and during hyperemic stress. Factors affecting rest MBF repeatability included gender, suspected coronary artery disease, and dual SOC (p < 0.001). The best repeatability coefficient for same-day rest MBF was 0.20 mL/min/g using a six-minute scan-time, iterative reconstruction, dual SOC, resting rate-pressure-product (RPP) adjustment, and a left atrium image-derived input function. The serial study repeatabilities of the optimized protocol in subjects with homogeneous RPPs and tracer infusion profiles was 0.19 and 0.53 mL/min/g at rest and stress, and 0.95 for stress / rest myocardial flow reserve (MFR). Subjects with heterogeneous tracer infusion profiles and hemodynamic conditions had significantly less repeatable MBF measurements at rest, stress, and stress/rest flow reserve (p < 0.05).

  5. Test-retest reproducibility for regional brain metabolic responses to lorazepam

    SciTech Connect

    Wang, G.J.; Volkow, N.D.; Overall, J. |||

    1996-05-01

    Changes in regional brain glucose metabolism as assessed with PET and FDG in response to acute administration of benzodiazepine agonists have been used as indicators of benzodiazepine-GABA receptor function. The purpose of this study was to assess the reproducibility of these responses. Sixteen healthy right-handed men were scanned with positron emission tomography (PET) and [F-18] fluorodeoxyglucose (FDG) twice: prior to placebo and prior to lorazepam (30 {mu}g/kg). The same double FDG procedure was repeated 6-8 weeks later to assess test-retest reproducibility. The regional absolute brain metabolic values obtained during the second evaluation were significantly lower than those obtained for the first evaluation regardless of condition (p {le} 0.001). Lorazepam significantly and consistently decreased whole brain metabolism and the magnitude as well as the regional pattern of the changes was comparable for both studies (12.3 {plus_minus} 6.9% and 13.7 {plus_minus} 7.4%). Lorazepam effects were largest in thalamus (22.2 {plus_minus} 8.9%). Relative metabolic measures ROI/global were highly reproducible both for drug as well as replication condition. This is the first study to measure test-retest reproducibility in regional brain metabolic response to a pharmacological challenge. While the global and regional absolute metabolic values were significantly lower for the repeated evaluation, the regional brain metabolic response to lorazepam was highly reproducible.

  6. Examining the Stability of the 7-Item Social Physique Anxiety Scale Using a Test-Retest Method

    ERIC Educational Resources Information Center

    Scott, Lisa A.; Burke, Kevin L.; Joyner, A. Barry; Brand, Jennifer S.

    2004-01-01

    This study examined the stability of the 7-item Social Physique Anxiety Scale (SPAS-7) using a test-retest method. Collegiate, undergraduate (N = 201) students completed two administrations of the SPAS-7, with a 14-day separation between the administrations. The scale was administered either at the beginning or end of the physical activity class.…

  7. Fatigue and daytime sleepiness rating scales in myotonic dystrophy: a study of reliability

    PubMed Central

    Laberge, L; Gagnon, C; Jean, S; Mathieu, J

    2005-01-01

    Objectives: To assess the reliability of the Epworth Sleepiness Scale (ESS), Daytime Sleepiness Scale (DSS), Chalder Fatigue Scale (CFS), and Krupp's Fatigue Severity Scale (KFSS) in patients with myotonic dystrophy type 1 (DM1). Methods: In total, 27 patients with DM1 were administered the questionnaires on two occasions, with a 2 week interval. Internal consistency and test retest reliability were measured using intraclass correlation coefficients (ICCs), and Cronbach's α, Cohen's κ, and Goodman-Kruskal's γ coefficients. Results: Internal consistency of the CFS and KFSS were adequate (α>0.70) but that of the ESS was weak (α = 0.24). Both daytime sleepiness and fatigue rating scales showed significant test retest reliability. Test retest reliability for individual items revealed inconsistencies for some ESS and CFS items. Conclusions: Reliability of the CFS, DSS, and KFSS was high, allowing their use for individual patients with DM1, but that of the ESS was lower, rendering its current usage in DM1 questionable. Fatigue rating scales such as the KFSS, which are based on the behavioural consequences of fatigue, may constitute a more accurate and comprehensive measure of fatigue severity in the DM1 population. PMID:16170085

  8. Life Change Measurement: Scoring, Reliability, and Subjective Estimates of Adjustment.

    ERIC Educational Resources Information Center

    Pearson, Judith E.; Long, Thomas J.

    1985-01-01

    Reports the test-retest reliabilities for the Schedule of Recent Experiences (item counts) and the Recent Life Changes Questionnaire and compares the two scales. Subjects (N=109) were men and women enlisted in the US military reserves. Results indicated the two questionnaires demonstrate acceptable test-retest reliability. (BH)

  9. Reliability of the Revised Psychopathy Checklist in Substance Abuse Patients.

    ERIC Educational Resources Information Center

    Alterman, Arthur I.; And Others

    1993-01-01

    One month test-retest reliability of the Revised Psychopathy Checklist (PCL-R) was examined in 88 methadone-maintained males, along with effects of increased information about patients on PCL-R scores and diagnostic derivations. Test-retest reliabilities are quite good. Other findings also confirm potential utility of the PCL-R for research. (SLD)

  10. The reliability of an education-related self-efficacy scale for people with psychiatric disabilities.

    PubMed

    Harris, Meredith; Gladman, Beverley; Hennessy, Nicole; Lloyd, Chris; Mowry, Bryan; Waghorn, Geoffrey

    2011-04-01

    We investigated the reliability of the Education-related Self Efficacy Scale (ESS-40), a measure of self-efficacy at a core task level designed for people with psychiatric disabilities. Sixty community residents with schizophrenia or schizoaffective disorder participated. The ESS-40 was administered twice via telephone interview. Short cycle test-retest reliability was very good for the total score and most items. The measure demonstrated signs of a coherent internal structure, adequate face validity, good client acceptability, and promising utility. The reliability evidence supports its use in community mental health services and in psychiatric rehabilitation settings. Sensitivity and predictive validity require further investigation.

  11. Evaluating Rural Progress in Mathematics Achievement: Is "Adequate Yearly Progress" (AYP) Feasible, Valid, Reliable, and Fair? Working Paper.

    ERIC Educational Resources Information Center

    Lee, Jaekyung

    The No Child Left Behind Act requires standards-based accountability for school districts and schools receiving Title I funds. A major component of this policy is to report whether districts and schools are making "adequate yearly progress" (AYP) based on their performance goals. This paper raises questions for rural schools using the…

  12. A reliability study of the Spanish version of the social behaviour schedule (SBS) in a population of adults with learning disabilities.

    PubMed

    Salvador-Carulla, L; Garcia-Mellado, M J; Velazquez, R; Romero, C; Alonso, F

    1998-02-01

    The reliability of the Spanish version of the Social Behaviour Schedule (SBS) was tested in a vocational setting on a sample of 64 subjects with learning disabilities. Test-retest assessment showed a good percentage of agreement (80%) and adequate kappa values for most SBS items. The overall percentage of agreement of inter-rater reliability was 85% and kappa values were moderate to nearly perfect for 52% of items. Inter-informant analyses produced poorer results, with an average agreement of 43% and inadequate kappa values on 42% of items. The intraclass correlation coefficient (ICC) was 0.64 for test-retest, 0.76 for inter-rater assessment and 0.94 for inter-informant assessment. The Spearman correlation coefficient was adequate on the test-retest and inter-rater analyses, but not on inter-informant analysis. This low inter-informant agreement could be attributed to environmental factors which alter the reliability of reports from different informants in community settings with high levels of normalization. In such environments, an interview with a key informant may not suffice, and both a careful review of the clinical record and a direct interview with subjects may enhance the reliability of the information attained.

  13. Dual conception of risk in the Iowa Gambling Task: effects of sleep deprivation and test-retest gap.

    PubMed

    Singh, Varsha

    2013-01-01

    Risk in the Iowa Gambling Task (IGT) is often understood in terms of intertemporal choices, i.e., preference for immediate outcomes in favor of delayed outcomes is considered risky decision making. According to behavioral economics, healthy decision makers are expected to refrain from choosing the short-sighted immediate gain because, over time (10 trials of the IGT), the immediate gains result in a long term loss (net loss). Instead decision makers are expected to maximize their gains by choosing options that, over time (10 trials), result in delayed or long term gains (net gain). However, task choices are sometimes made on the basis of the frequency of reward and punishment such that frequent rewards/infrequent punishments are favored over infrequent rewards/frequent punishments. The presence of these two attributes (intertemporality and frequency of reward) in IGT decision making may correspond to the emotion-cognition dichotomy and reflect a dual conception of risk. Decision making on the basis of the two attributes was tested under two conditions: delay in retest and sleep deprivation. An interaction between sleep deprivation and time delay was expected to attenuate the difference between the two attributes. Participants were 40 male university students. Analysis of the effects of IGT attribute type (intertemporal vs. frequency of reinforcement), sleep deprivation (sleep deprivation vs. no sleep deprivation), and test-retest gap (short vs. long delay) showed a significant within-subjects effect of IGT attribute type thus confirming the difference between the two attributes. Sleep deprivation had no effect on the attributes, but test-retest gap and the three-way interaction between attribute type, test-retest gap, and sleep deprivation were significantly different. Post-hoc tests revealed that sleep deprivation and short test-retest gap attenuated the difference between the two attributes. Furthermore, the results showed an expected trend of increase in

  14. Test-retest stability of the behavioural assessment of the dysexecutive syndrome in a sample of psychiatric patients.

    PubMed

    Jelicic, M; Henquet, C E; Derix, M M; Jolles, J

    2001-09-01

    The Behavioural Assessment of the Dysexecutive Syndrome (BADS) is a relatively new test battery designed to measure disorders of executive functions. We studied the temporal stability of the BADS in a sample of 22 adult psychiatric patients. All patients were administered the BADS twice with an interval of 3 weeks. Test-retest correlations for the BADS tests ranged from .22 to .85. On the repeat administration, patients obtained higher scores on one test as well as on the total BADS. Our results suggest that the BADS should not be administered on two occasions a few weeks apart.

  15. The Reliability of Pharyngeal High Resolution Manometry with Impedance for Derivation of Measures of Swallowing Function in Healthy Volunteers

    PubMed Central

    Omari, Taher I.; Savilampi, Johanna; Kokkinn, Karmen; Schar, Mistyka; Lamvik, Kristin; Doeltgen, Sebastian; Cock, Charles

    2016-01-01

    Purpose. We evaluated the intra- and interrater agreement and test-retest reliability of analyst derivation of swallow function variables based on repeated high resolution manometry with impedance measurements. Methods. Five subjects swallowed 10 × 10 mL saline on two occasions one week apart producing a database of 100 swallows. Swallows were repeat-analysed by six observers using software. Swallow variables were indicative of contractility, intrabolus pressure, and flow timing. Results. The average intraclass correlation coefficients (ICC) for intra- and interrater comparisons of all variable means showed substantial to excellent agreement (intrarater ICC 0.85–1.00; mean interrater ICC 0.77–1.00). Test-retest results were less reliable. ICC for test-retest comparisons ranged from slight to excellent depending on the class of variable. Contractility variables differed most in terms of test-retest reliability. Amongst contractility variables, UES basal pressure showed excellent test-retest agreement (mean ICC 0.94), measures of UES postrelaxation contractile pressure showed moderate to substantial test-retest agreement (mean Interrater ICC 0.47–0.67), and test-retest agreement of pharyngeal contractile pressure ranged from slight to substantial (mean Interrater ICC 0.15–0.61). Conclusions. Test-retest reliability of HRIM measures depends on the class of variable. Measures of bolus distension pressure and flow timing appear to be more test-retest reliable than measures of contractility. PMID:27190520

  16. The Test-Retest Reliability of the United States Air Forces Submaximal Bicycle Ergometry Aerobic Fitness Test.

    DTIC Science & Technology

    2007-11-02

    preferred and most economical cadences. Med Sei sports Exerc 1993; 25:1269-1274. 51. McArdle WD, Katch FI, Katch VL: Exercise Physiology: Energy, Nutrition ...a. Do you surfer from pains in your chest, especially with physical activity? b. Do you often feel faint or have spells of severe dizziness? 4. Are

  17. Test-Retest Reliability of the Adaptive Chemistry Assessment Survey for Teachers: Measurement Error and Alternatives to Correlation

    ERIC Educational Resources Information Center

    Harshman, Jordan; Yezierski, Ellen

    2016-01-01

    Determining the error of measurement is a necessity for researchers engaged in bench chemistry, chemistry education research (CER), and a multitude of other fields. Discussions regarding what constructs measurement error entails and how to best measure them have occurred, but the critiques about traditional measures have yielded few alternatives.…

  18. Quantification of [(11)C]PIB PET for imaging myelin in the human brain: a test-retest reproducibility study in high-resolution research tomography.

    PubMed

    Veronese, Mattia; Bodini, Benedetta; García-Lorenzo, Daniel; Battaglini, Marco; Bongarzone, Salvatore; Comtat, Claude; Bottlaender, Michel; Stankoff, Bruno; Turkheimer, Federico E

    2015-11-01

    An accurate in vivo measure of myelin content is essential to deepen our insight into the mechanisms underlying demyelinating and dysmyelinating neurological disorders, and to evaluate the effects of emerging remyelinating treatments. Recently [(11)C]PIB, a positron emission tomography (PET) tracer originally conceived as a beta-amyloid marker, has been shown to be sensitive to myelin changes in preclinical models and humans. In this work, we propose a reference-region methodology for the voxelwise quantification of brain white-matter (WM) binding for [(11)C]PIB. This methodology consists of a supervised procedure for the automatic extraction of a reference region and the application of the Logan graphical method to generate distribution volume ratio (DVR) maps. This approach was assessed on a test-retest group of 10 healthy volunteers using a high-resolution PET tomograph. The [(11)C]PIB PET tracer binding was shown to be up to 23% higher in WM compared with gray matter, depending on the image reconstruction. The DVR estimates were characterized by high reliability (outliers <1%) and reproducibility (intraclass correlation coefficient (ICC) >0.95). [(11)C]PIB parametric maps were also found to be significantly correlated (R(2)>0.50) to mRNA expressions of the most represented proteins in the myelin sheath. On the contrary, no correlation was found between [(11)C]PIB imaging and nonmyelin-associated proteins.

  19. Test-retest reproducibility of elbow goniometric measurements in a rigid double-blinded protocol: intervals for distinguishing between measurement error and clinical change.

    PubMed

    Cleffken, Berry; van Breukelen, Gerard; van Mameren, Henk; Brink, Peter; Olde Damink, Steven

    2007-01-01

    Increasingly, goniometry of elbow motion is used for qualification of research results. Expression of reliability is in parameters not suitable for comparison of results. We modified Bland and Altman's method, resulting in the smallest detectable differences (SDDs). Two raters measured elbow excursions in 42 individuals (144 ratings per test person) with an electronic digital inclinometer in a classical test-retest crossover study design. The SDDs were 0 +/- 4.2 degrees for active extension; 0 +/- 8.2 degrees for active flexion, both without upper arm fixation; 0 +/- 6.3 degrees for active extension; 0 +/- 5.7 degrees for active flexion; 0 +/- 7.4 degrees for passive flexion with upper arm fixation; 0 +/- 10.1 degrees for active flexion with upper arm retroflexion; and 0 +/- 8.5 degrees and 0 +/- 10.8 degrees for active and passive range of motion. Differences smaller than these SDDs found in clinical or research settings are attributable to measurement error and do not indicate improvement.

  20. Evaluation of the Agonist PET Radioligand [11C]GR103545 to Image Kappa Opioid Receptor in Humans: Kinetic Model Selection, Test-Retest Reproducibility and Receptor Occupancy by the Antagonist PF-04455242

    PubMed Central

    Naganawa, Mika; Jacobsen, Leslie K.; Zheng, Ming-Qiang; Lin, Shu-Fei; Banerjee, Anindita; Byon, Wonkyung; Weinzimmer, David; Tomasi, Giampaolo; Nabulsi, Nabeel; Grimwood, Sarah; Badura, Lori L.; Carson, Richard E.; McCarthy, Timothy J.; Huang, Yiyun

    2014-01-01

    Introduction Kappa opioid receptors (KOR) are implicated in several brain disorders. In this report, a first-in-human Positron Emission Tomography (PET) study was conducted with the potent and selective KOR agonist tracer, [11C]GR103545, to determine an appropriate kinetic model for analysis of PET imaging data and assess the test-retest reproducibility of model-derived binding parameters. The non-displaceable distribution volume (VND) was estimated from a blocking study with naltrexone. In addition, KOR occupancy of PF-04455242, a selective KOR antagonist that is active in preclinical models of depression, was also investigated. Methods For determination of a kinetic model and evaluation of test-retest reproducibility, 11 subjects were scanned twice with [11C]GR103545. Seven subjects were scanned before and 75 min after oral administration of naltrexone (150 mg). For the KOR occupancy study, six subjects were scanned at baseline and 1.5 h and 8 h after an oral dose of PF-04455242 (15 mg, n = 1 and 30 mg, n = 5). Metabolite-corrected arterial input functions were measured and all scans were 150 min in duration. Regional time-activity curves (TACs) were analyzed with 1- and 2-tissue compartment models (1TC and 2TC) and the multilinear analysis (MA1) method to derive regional volume of distribution (VT). Relative test-retest variability (TRV), absolute test-retest variability (aTRV) and intra-class coefficient (ICC) were calculated to assess test-retest reproducibility of regional VT. Occupancy plots were computed for blocking studies to estimate occupancy and VND. The half maximal inhibitory concentration (IC50) of PF-04455242 was determined from occupancies and drug concentrations in plasma. [11C]GR103545 in vivo KD was also estimated. Results Regional TACs were well described by the 2TC model and MA1. However, 2TC VT was sometimes estimated with high standard error. Thus MA1 was the model of choice. Test-retest variability was ~15%, depending on the outcome

  1. Internal Consistency and Test-Retest of Descriptive Comments on Compositions

    ERIC Educational Resources Information Center

    Follman, John; And Others

    1976-01-01

    College juniors (N=28) tested two versions of the Marshall Flotation Technique to obtain consistency of descriptive comments in rating themes compared with number and letter grades. High reliability estimates for all four pre and post-test groups and a significant decline from pre to post groups in number of comments resulted. (Author)

  2. Reliability and factorial validity of the Observer Alexithymia Scale-Chinese translation.

    PubMed

    Yao, Shuqiao; Yi, Jinyao; Zhu, Xiongzhao; Haviland, Mark G

    2005-03-30

    The purpose of the present study was to develop a Chinese translation of the Observer Alexithymia Scale (OAS-C) and evaluate its reliability and factorial validity. The original English-version of the Observer Alexithymia Scale (OAS) was translated into Chinese and given to 468 Chinese undergraduate students. Students were asked to rate a person (other than themselves) whom they knew well (e.g., a parent, sibling, another relative, or friend). We evaluated internal consistency, test-retest and inter-rater reliability, and factorial validity. Average OAS-C scores were slightly higher than, but comparable to, OAS scores in the normative samples (English-speaking/nonclinical). The OAS-C showed adequate internal consistency (Cronbach's alpha coefficient was 0.84, and the mean inter-item correlation coefficient was 0.14), good stability (test-retest reliability with a 2-week interval was 0.90), and inter-rater reliability (intra-class correlation coefficient was 0.78). Moreover, the OAS five-factor model (Distant, Uninsightful, Somatizing, Humorless, and Rigid) was confirmed: incremental fit index=0.905, comparative fit index=0.904, and root mean square error of approximation=0.086; each represented an adequate model fit. The OAS-C appears to be a reliable and valid observer-rated alexithymia measure. We recommend that researchers collect both self- and observer-rated alexithymia data and, when possible, obtain observer reports from more than one person.

  3. [Reliability of the Greek version of the eating disorder examination questionnaire (EDE-Q) in a sample of adolescent students].

    PubMed

    Pliatskidou, S; Samakouri, M; Kalamara, E; Goulemtzakis, C; Koutrouvi, K; Papageorgiou, E; Livadites, M

    2012-01-01

    behavioral features ranged from 0.22 to 0.57. All the above correlations that concern the test-retest reliability of the EDE-Q were statistically significant at the 0.001 level. The Greek version of EDE-Q 6.0, standardized in a sample of secondary school students, presents adequate test-retest reliability and internal consistency as well.

  4. Static Subjective Visual Vertical in Healthy Volunteers: The Effects of Different Preset Angle Deviations and Test-Retest Variability

    PubMed Central

    Venhovens, J.; Meulstee, J.; Verhagen, W. I. M.

    2016-01-01

    ABSTRACT The static subjective visual vertical (SVV) was assessed in 24 healthy volunteers with different preset angles (i.e., 10, 20, and 30 degrees), and in 20 other volunteers, the static SVV was tested and retested 1 week later. The static SVV results are influenced by the side of the preset angle (Wilcoxon test, p ≤ 0.001), but not by the preset angle deviation. The test-retest static SVV outcomes are stable at a group level; however, they show statistically relevant variability at an individual level (−0.240 ≤ intraclass correlation coefficient [ICC] ≤ 0.508). A robust static SVV protocol is described in this paper. PMID:27928394

  5. A high resolution 7-Tesla resting-state fMRI test-retest dataset with cognitive and physiological measures.

    PubMed

    Gorgolewski, Krzysztof J; Mendes, Natacha; Wilfling, Domenica; Wladimirow, Elisabeth; Gauthier, Claudine J; Bonnen, Tyler; Ruby, Florence J M; Trampel, Robert; Bazin, Pierre-Louis; Cozatl, Roberto; Smallwood, Jonathan; Margulies, Daniel S

    2015-01-01

    Here we present a test-retest dataset of functional magnetic resonance imaging (fMRI) data acquired at rest. 22 participants were scanned during two sessions spaced one week apart. Each session includes two 1.5 mm isotropic whole-brain scans and one 0.75 mm isotropic scan of the prefrontal cortex, giving a total of six time-points. Additionally, the dataset includes measures of mood, sustained attention, blood pressure, respiration, pulse, and the content of self-generated thoughts (mind wandering). This data enables the investigation of sources of both intra- and inter-session variability not only limited to physiological changes, but also including alterations in cognitive and affective states, at high spatial resolution. The dataset is accompanied by a detailed experimental protocol and source code of all stimuli used.

  6. Test--retest stability of the Pain Catastrophizing Scale and the Tampa Scale for Kinesiophobia in chronic pain over a longer period of time.

    PubMed

    Lamé, Inge E; Peters, Madelon L; Kessels, Alfons G; Van Kleef, Maarten; Patijn, Jacob

    2008-09-01

    The objective of this study was to investigate the test-retest stability of the Pain Catastrophizing Scale (PCS), the Tampa Scale for Kinesiophobia (TSK) and their subscales in chronic pain patients over relatively long period of times like those that are most often seen in clinical practice. Fifty non-malignant chronic pain patients filled out the PCS and TSK twice with a mean interval between testing of 52 days. Both assessment instruments showed sufficient test-retest stability, even with long time intervals between testing.

  7. Validity and reliability of Optojump photoelectric cells for estimating vertical jump height.

    PubMed

    Glatthorn, Julia F; Gouge, Sylvain; Nussbaumer, Silvio; Stauffacher, Simone; Impellizzeri, Franco M; Maffiuletti, Nicola A

    2011-02-01

    Vertical jump is one of the most prevalent acts performed in several sport activities. It is therefore important to ensure that the measurements of vertical jump height made as a part of research or athlete support work have adequate validity and reliability. The aim of this study was to evaluate concurrent validity and reliability of the Optojump photocell system (Microgate, Bolzano, Italy) with force plate measurements for estimating vertical jump height. Twenty subjects were asked to perform maximal squat jumps and countermovement jumps, and flight time-derived jump heights obtained by the force plate were compared with those provided by Optojump, to examine its concurrent (criterion-related) validity (study 1). Twenty other subjects completed the same jump series on 2 different occasions (separated by 1 week), and jump heights of session 1 were compared with session 2, to investigate test-retest reliability of the Optojump system (study 2). Intraclass correlation coefficients (ICCs) for validity were very high (0.997-0.998), even if a systematic difference was consistently observed between force plate and Optojump (-1.06 cm; p < 0.001). Test-retest reliability of the Optojump system was excellent, with ICCs ranging from 0.982 to 0.989, low coefficients of variation (2.7%), and low random errors (±2.81 cm). The Optojump photocell system demonstrated strong concurrent validity and excellent test-retest reliability for the estimation of vertical jump height. We propose the following equation that allows force plate and Optojump results to be used interchangeably: force plate jump height (cm) = 1.02 × Optojump jump height + 0.29. In conclusion, the use of Optojump photoelectric cells is legitimate for field-based assessments of vertical jump height.

  8. [Description and validity of Enedam test-retest. A structured interview for the diagnosis of Alzheimer's, multi-infarction dementias and dementias of other etiologies based on the CIE-10 and DSM-III-R].

    PubMed

    Moríñigo, A; Zaudig, M; Mittelhammer, J; Hiller, W; Pauls, A; Martín, J; González, S; Mateo, I; Noval, D

    1990-01-01

    The SIDAM, a new clinical structured interview for the diagnosis and measure of dementia according to DSM-III-R and ICD-10, is described. This instrument comprises a clinical overview, several cognitive tests, including the Mini-Mental State, and a section for clinical judgement and information coming from others. Every item relies on DSM-11-R and ICD-10 algorithms. The SIDAM has a hight test-retest reliability on the clinical diagnosis and the different diagnostic criteria. It is a brief (28 minutes), practical screening instrument. Good congruence is found between SIDEM, DSM-III-R and ICD-10, and the corresponding ICD-9 expert diagnosis. Furthermore the SIDAM Total Score (SISCO), allows a good measurement of low level of cognitive impairments and provides quantification of severity of cognitive disorders. The SIDAM has been translated and adapted into Spanish.

  9. Improving test-retest variability of visual-evoked responses in multiple sclerosis: implications for trial design.

    PubMed

    Thomae, Eva; Niklas, Alexander; Sebraoui, Hatifa; Baum, Petra; Wagner, Armin; Then Bergh, Florian

    2010-08-01

    Remyelination is an important repair strategy in multiple sclerosis. Latencies of visual-evoked responses are a suitable surrogate for remyelination of the optic nerve. Their test-retest variability has been incompletely evaluated, especially in pathologically delayed potentials. Visual-evoked potential was recorded twice, 2.1 +/- 3.1 (mean +/- SD) days apart, in 39 patients with definite or evaluated for multiple sclerosis. Acute optic neuritis and current steroid treatment were exclusion criteria. Mean and difference of the two recordings were calculated for latencies and amplitude, both before and after verification of cursor positioning by a physician blinded for the sequence of recordings. Before verification, the difference between first and second visual-evoked potential was -2.07 +/- 9.07 milliseconds for N75 latency, -1.18 +/- 8.02 milliseconds for P100 latency, and -0.06 +/- 2.71 muV for N75/P100 amplitude (n = 77 eyes, mean +/- SD). Independent verification judged two eyes as unsuitable for analysis. The differences in the remaining 75 eyes were reduced to -1.22 +/- 6.86 milliseconds (N75), -0.7 +/- 3.85 milliseconds (P100) and -0.04 +/- 2.53 microV (amplitude). These effects do not differ between delayed and nondelayed eyes. Similar to magnetic resonance imaging, use of evoked potentials in multiple sclerosis remyelination trials will require independent verification, ideally by a central evaluating facility. Reproducibility should be verified individually at screening.

  10. Process Stationarity and Reliability of Trunk Postural Stability

    PubMed Central

    Lee, HyunWook; Granata, Kevin P.

    2009-01-01

    Background Empirical assessments of torso stability can be estimated from postural variability and nonlinear analyses of seated balance tasks. However, processing methods require sufficient signal duration and test-retest experiments require the assessment must be reliable. Our goal was to characterize the reliability and establish the trial duration for torso stability assessment. Methods Kinetic and kinematic data were recorded while subjects maintained a seated posture on a wobbly seat pan. Stability was evaluated from dynamic variability and nonlinear stability analyses. Process stationarity of the measured signals characterized the minimum necessary trial duration. Intra-class correlations measured within-session and between-session reliability. Findings Trial duration necessary to achieve process stationarity was 30.2 seconds. Shorter time to stationarity was observed with measures that included multi-dimensional movement behavior. Summary statistics of movement variability demonstrated moderate intra-session reliability, ICC = 0.64 (range 0.38 – 0.87). Inter-session reliability for movement variance was moderate, ICC = 0.42 (range 0.22 – 0.64). Nonlinear stability measures typically performed better than estimates of variability with inter-session reliability as high as ICC = 0.83. Process stationarity and reliability were improved in more difficult balance conditions. Interpretation To adequately capture torso dynamics during the stability assessment the trial duration should be at least 30 seconds. Moderate to excellent test-retest reliability can be achieved in intra-session analyses, but more repeated measurements are required for inter-session comparisons. Stability diffusion exponents, HS, and the Lyapunov exponents provide excellent measures for intra-session analyses, while HS provides excellent inter-session comparisons of torso stability. PMID:18304711

  11. The Validity and reliability of the Comprehensive Home Environment Survey (CHES).

    PubMed

    Pinard, Courtney A; Yaroch, Amy L; Hart, Michael H; Serrano, Elena L; McFerren, Mary M; Estabrooks, Paul A

    2014-01-01

    Few comprehensive measures exist to assess contributors to childhood obesity within the home, specifically among low-income populations. The current study describes the modification and psychometric testing of the Comprehensive Home Environment Survey (CHES), an inclusive measure of the home food, physical activity, and media environment related to childhood obesity. The items were tested for content relevance by an expert panel and piloted in the priority population. The CHES was administered to low-income parents of children 5 to 17 years (N = 150), including a subsample of parents a second time and additional caregivers to establish test-retest and interrater reliabilities. Children older than 9 years (n = 95), as well as parents (N = 150) completed concurrent assessments of diet and physical activity behaviors (predictive validity). Analyses and item trimming resulted in 18 subscales and a total score, which displayed adequate internal consistency (α = .74-.92) and high test-retest reliability (r ≥ .73, ps < .01) and interrater reliability (r ≥ .42, ps < .01). The CHES score and a validated screener for the home environment were correlated (r = .37, p < .01; concurrent validity). CHES subscales were significantly correlated with behavioral measures (r = -.20-.55, p < .05; predictive validity). The CHES shows promise as a valid/reliable assessment of the home environment related to childhood obesity, including healthy diet and physical activity.

  12. The QUASAR reproducibility study, Part II: Results from a multi-center Arterial Spin Labeling test-retest study.

    PubMed

    Petersen, Esben Thade; Mouridsen, Kim; Golay, Xavier

    2010-01-01

    Arterial Spin Labeling (ASL) is a method to measure perfusion using magnetically labeled blood water as an endogenous tracer. Being fully non-invasive, this technique is attractive for longitudinal studies of cerebral blood flow in healthy and diseased individuals, or as a surrogate marker of metabolism. So far, ASL has been restricted mostly to specialist centers due to a generally low SNR of the method and potential issues with user-dependent analysis needed to obtain quantitative measurement of cerebral blood flow (CBF). Here, we evaluated a particular implementation of ASL (called Quantitative STAR labeling of Arterial Regions or QUASAR), a method providing user independent quantification of CBF in a large test-retest study across sites from around the world, dubbed "The QUASAR reproducibility study". Altogether, 28 sites located in Asia, Europe and North America participated and a total of 284 healthy volunteers were scanned. Minimal operator dependence was assured by using an automatic planning tool and its accuracy and potential usefulness in multi-center trials was evaluated as well. Accurate repositioning between sessions was achieved with the automatic planning tool showing mean displacements of 1.87+/-0.95 mm and rotations of 1.56+/-0.66 degrees . Mean gray matter CBF was 47.4+/-7.5 [ml/100 g/min] with a between-subject standard variation SD(b)=5.5 [ml/100 g/min] and a within-subject standard deviation SD(w)=4.7 [ml/100 g/min]. The corresponding repeatability was 13.0 [ml/100 g/min] and was found to be within the range of previous studies.

  13. Reliability and validity of television food advertising questionnaire in Malaysia.

    PubMed

    Zalma, Abdul Razak; Safiah, Md Yusof; Ajau, Danis; Khairil Anuar, Md Isa

    2015-09-01

    Interventions to counter the influence of television food advertising amongst children are important. Thus, reliable and valid instrument to assess its effect is needed. The objective of this study was to determine the reliability and validity of such a questionnaire. The questionnaire was administered twice on 32 primary schoolchildren aged 10-11 years in Selangor, Malaysia. The interval between the first and second administration was 2 weeks. Test-retest method was used to examine the reliability of the questionnaire. Intra-rater reliability was determined by kappa coefficient and internal consistency by Cronbach's alpha coefficient. Construct validity was evaluated using factor analysis. The test-retest correlation showed moderate-to-high reliability for all scores (r = 0.40*, p = 0.02 to r = 0.95**, p = 0.00), with one exception, consumption of fast foods (r = 0.24, p = 0.20). Kappa coefficient showed acceptable-to-strong intra-rater reliability (K = 0.40-0.92), except for two items under knowledge on television food advertising (K = 0.26 and K = 0.21) and one item under preference for healthier foods (K = 0.33). Cronbach's alpha coefficient indicated acceptable internal consistency for all scores (0.45-0.60). After deleting two items under Consumption of Commonly Advertised Food, the items showed moderate-to-high loading (0.52, 0.84, 0.42 and 0.42) with the Scree plot showing that there was only one factor. The Kaiser-Meyer-Olkin was 0.60, showing that the sample was adequate for factor analysis. The questionnaire on television food advertising is reliable and valid to assess the effect of media literacy education on television food advertising on schoolchildren.

  14. Measuring teacher self-report on classroom practices: Construct validity and reliability of the Classroom Strategies Scale-Teacher Form.

    PubMed

    Reddy, Linda A; Dudek, Christopher M; Fabiano, Gregory A; Peters, Stephanie

    2015-12-01

    This article presents information about the construct validity and reliability of a new teacher self-report measure of classroom instructional and behavioral practices (the Classroom Strategies Scales-Teacher Form; CSS-T). The theoretical underpinnings and empirical basis for the instructional and behavioral management scales are presented. Information is provided about the construct validity, internal consistency, test-retest reliability, and freedom from item-bias of the scales. Given previous investigations with the CSS Observer Form, it was hypothesized that internal consistency would be adequate and that confirmatory factor analyses (CFA) of CSS-T data from 293 classrooms would offer empirical support for the CSS-T's Total, Composite and subscales, and yield a similar factor structure to that of the CSS Observer Form. Goodness-of-fit indices of χ2/df, Root Mean Square Error of Approximation, Goodness of Fit Index, and Adjusted Goodness of Fit Index suggested satisfactory fit of proposed CFA models whereas the Comparative Fit Index did not. Internal consistency estimates of .93 and .94 were obtained for the Instructional Strategies and Behavioral Strategies Total scales respectively. Adequate test-retest reliability was found for instructional and behavioral total scales (r = .79, r = .84, percent agreement 93% and 93%). The CSS-T evidences freedom from item bias on important teacher demographics (age, educational degree, and years of teaching experience). Implications of results are discussed.

  15. Cross-cultural validity and reliability testing of a standard psychiatric assessment instrument without a gold standard.

    PubMed

    Bolton, P

    2001-04-01

    The objective of this study was to assess the cross-culture validity and reliability of a standard psychiatric assessment instrument without the usual "gold standards." Normally criterion validity testing requires comparison with such a standard--usually another instrument or a professional diagnosis. Instead local informants identified persons with and without "agahinda gakabije" (a locally described grief syndrome) who were then asked if they thought they had this syndrome and also interviewed using the depression section of the Hopkins Symptom Checklist (DHSCL). To assess criterion validity, interviews where respondent and informant agreed on the presence or absence of agahinda gakabije were compared with depression diagnosis using the DHSCL. We also assessed construct validity (using factor analysis), internal reliability (Cronbach's alpha), and test-retest reliability using results from a subsequent community-based survey employing the DHSCL. We found a similar relationship between depression and agahinda gakabije as between depression and grief in western countries, which supports criterion validity. Construct validity and internal reliability were good (Cronbach's alpha = 0.87). Test-retest reliability of a DHSCL-based scale was less adequate (0.67). Although not replacing the usual gold standards for testing criterion validity, this approach may prove useful where these standards are unavailable. As this includes much of the developing world, this could result in more accurate mental health assessments among populations for whom this has hitherto not been possible.

  16. Reliability and Validity of the Commitment to Physical Activity Scale for Adolescents.

    PubMed

    Robbins, Lorraine B; Ling, Jiying; Wesolek, Stacey M; Kazanis, Anamaria S; Bourne, Kelly A; Resnicow, Ken

    2016-01-05

    Purpose . To examine psychometric properties of a Commitment to Physical Activity Scale for Adolescents (CPASA). Design . Two test-retest studies and a prospective study, approved by a university institutional review board, were conducted in midwestern U.S. urban areas. Setting . The first test-retest study occurred in four community centers, the second test-retest study took place in a community school, and the prospective study occurred in eight middle schools. Subjects . To measure commitment at baseline and 1 week later, 51 girls in the first test-retest study completed an original 26-item scale, and 91 in the second test-retest study completed a revised 11-item scale. In the prospective study, 503 girls completed the 11-item scale. Measures . Commitment was measured via the CPASA. After completing the CPASA, girls in the prospective study wore ActiGraph GT3X-plus accelerometers that measured light, moderate, and vigorous physical activity (LMVPA) and moderate to vigorous physical activity (MVPA). Analysis . Internal consistency and test-retest reliability were estimated. Both exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) were conducted to cross-validate the factor structure. Results . For the 11-item CPASA, Cronbach α ranged from .81 to .82, and test-retest reliability was .88. Both EFA and CFA indicated a single factor. The scale was significantly correlated with LMVPA (r = .10) and MVPA (r = .11). Conclusion . The 11-item CPASA demonstrated acceptable reliability and validity with girls.

  17. Reliability and validity of the NeuroCognitive Performance Test, a web-based neuropsychological assessment

    PubMed Central

    Morrison, Glenn E.; Simone, Christa M.; Ng, Nicole F.; Hardy, Joseph L.

    2015-01-01

    The NeuroCognitive Performance Test (NCPT) is a brief, repeatable, web-based cognitive assessment platform that measures performance across several cognitive domains. The NCPT platform is modular and includes 18 subtests that can be arranged into customized batteries. Here we present normative data from a sample of 130,140 healthy volunteers for an NCPT battery consisting of 8 subtests. Participants took the NCPT remotely and without supervision. Factor structure and effects of age, education, and gender were evaluated with this normative dataset. Test-retest reliability was evaluated in a subset of participants who took the battery again an average of 78.8 days later. The eight NCPT subtests group into 4 putative cognitive domains, have adequate to good test-retest reliability, and are sensitive to expected age- and education-related cognitive effects. Concurrent validity to standard neuropsychological tests was demonstrated in 73 healthy volunteers. In an exploratory analysis the NCPT battery could differentiate those who self-reported Mild Cognitive Impairment or Alzheimer's disease from matched healthy controls. Overall these results demonstrate the reliability and validity of the NCPT battery as a measure of cognitive performance and support the feasibility of web-based, unsupervised testing, with potential utility in clinical and research settings. PMID:26579035

  18. Reliability and validity of the NeuroCognitive Performance Test, a web-based neuropsychological assessment.

    PubMed

    Morrison, Glenn E; Simone, Christa M; Ng, Nicole F; Hardy, Joseph L

    2015-01-01

    The NeuroCognitive Performance Test (NCPT) is a brief, repeatable, web-based cognitive assessment platform that measures performance across several cognitive domains. The NCPT platform is modular and includes 18 subtests that can be arranged into customized batteries. Here we present normative data from a sample of 130,140 healthy volunteers for an NCPT battery consisting of 8 subtests. Participants took the NCPT remotely and without supervision. Factor structure and effects of age, education, and gender were evaluated with this normative dataset. Test-retest reliability was evaluated in a subset of participants who took the battery again an average of 78.8 days later. The eight NCPT subtests group into 4 putative cognitive domains, have adequate to good test-retest reliability, and are sensitive to expected age- and education-related cognitive effects. Concurrent validity to standard neuropsychological tests was demonstrated in 73 healthy volunteers. In an exploratory analysis the NCPT battery could differentiate those who self-reported Mild Cognitive Impairment or Alzheimer's disease from matched healthy controls. Overall these results demonstrate the reliability and validity of the NCPT battery as a measure of cognitive performance and support the feasibility of web-based, unsupervised testing, with potential utility in clinical and research settings.

  19. Feasibility, Test-Retest Reliability, and Interrater Reliability of the Modified Ashworth Scale and Modified Tardieu Scale in Persons with Profound Intellectual and Multiple Disabilities

    ERIC Educational Resources Information Center

    Waninge, A.; Rook, R. A.; Dijkhuizen, A.; Gielen, E.; van der Schans, C. P.

    2011-01-01

    Caregivers of persons with profound intellectual and multiple disabilities (PIMD) often describe the quality of the daily movements of these persons in terms of flexibility or stiffness. Objective outcome measures for flexibility and stiffness are muscle tone or level of spasticity. Two instruments used to grade muscle tone and spasticity are the…

  20. Stability Reliability of the Behavior Rating Profile.

    ERIC Educational Resources Information Center

    Ellers, Robert A.; And Others

    1989-01-01

    Examined test-retest stability of Behavior Rating Profile for students grades l-12 (N=198), parents (N=212), and teachers (N=176) on 3 norm-referenced scales. Found Teacher Rating scale reliable across all grades for screening and eligibility, Parent Rating scale reliable for Grade 3-12 screening and Grade 3-6,ll, and l2, eligibility. Found…

  1. Test-retest repeatability of strength capacity, aerobic power and pericranial tenderness of neck and shoulder muscles in children - relevant for tension-type headache

    PubMed Central

    Tornøe, Birte; Andersen, Lars L; Skotte, Jørgen H; Jensen, Rigmor; Gard, Gunvor; Skov, Liselotte; Hallström, Inger

    2013-01-01

    Background Frequent or chronic tension-type headache in children is a prevalent and debilitating condition for the child, often leading to medication overuse. To explore the relationship between physical factors and tension-type headache in children, the quality of repeated measures was examined. The aim of the present study was to determine the test-retest repeatability of parameters determining isometric neck and shoulder strength and stability, aerobic power, and pericranial tenderness in children. Methods Twenty-five healthy children, 9 to 18 years of age, participated in test-retest procedures within a 1-week interval. A computerized padded force transducer was used for testing. The tests included the isometric maximal voluntary contraction and force steadiness of neck flexion and extension, and the isometric maximal voluntary contraction and rate of force of the dominant shoulder. Pericranial tenderness was recorded by means of standardized manual palpation, and a submaximal cycle ergometer test predicted maximal oxygen uptake (VO2 max). The measurements were evaluated in steps, using the intraclass correlation coefficient (ICC); changes in the mean between the two test occasions; the levels of agreement, visualized in Bland-Altman Plots; and by quantifying the variability. Results The results showed an acceptable test-retest repeatability of isometric maximal voluntary contraction (ICC 0.90–0.97). The force steadiness measurements revealed a trend of systematic changes in the direction of neck flexion and need further examination in both healthy and ill children. The rate of force development, Total Tenderness Score, and prediction of VO2 max showed repeatability, with ICC 0.80–0.87. Conclusion The measurements of strength capacity, aerobic power, and tenderness provide acceptable repeatability, suitable for research in children. PMID:24039446

  2. Myers-Briggs Type Indicator Score Reliability across Studies: A Meta-Analytic Reliability.

    ERIC Educational Resources Information Center

    Capraro, Robert M.; Capraro, Mary Margaret

    2002-01-01

    Submitted the Myers-Briggs Type Indicator (MBTI) to a descriptive reliability generalization analysis to characterize the variability of measurement error in MBTI scores across administrations. In general the MBTI and its scales yielded scores with strong internal consistency and test-retest reliability estimates. (SLD)

  3. Reliability of provocative tests of motion sickness susceptibility

    NASA Technical Reports Server (NTRS)

    Calkins, D. S.; Reschke, M. F.; Kennedy, R. S.; Dunlop, W. P.

    1987-01-01

    Test-retest reliability values were derived from motion sickness susceptibility scores obtained from two successive exposures to each of three tests: (1) Coriolis sickness sensitivity test; (2) staircase velocity movement test; and (3) parabolic flight static chair test. The reliability of the three tests ranged from 0.70 to 0.88. Normalizing values from predictors with skewed distributions improved the reliability.

  4. Reliability and Accuracy of Surgical Resident Peer Ratings.

    ERIC Educational Resources Information Center

    Lutsky, Larry A.; And Others

    1993-01-01

    Reliability and accuracy of peer ratings by 32, 28, 33 general surgery residents over 3 years were examined. Peer ratings were found highly reliable, with high level of test-retest reliability replicated across three years. Halo effects appear to pose greatest threat to rater accuracy, though chief residents tended to exhibit less halo effect than…

  5. Test-retest variability of high resolution positron emission tomography (PET) imaging of cortical serotonin (5HT2A) receptors in older, healthy adults

    PubMed Central

    2009-01-01

    Background Position emission tomography (PET) imaging using [18F]-setoperone to quantify cortical 5-HT2A receptors has the potential to inform pharmacological treatments for geriatric depression and dementia. Prior reports indicate a significant normal aging effect on serotonin 5HT2A receptor (5HT2AR) binding potential. The purpose of this study was to assess the test-retest variability of [18F]-setoperone PET with a high resolution scanner (HRRT) for measuring 5HT2AR availability in subjects greater than 60 years old. Methods: Six healthy subjects (age range = 65–78 years) completed two [18F]-setoperone PET scans on two separate occasions 5–16 weeks apart. Results The average difference in the binding potential (BPND) as measured on the two occasions in the frontal and temporal cortical regions ranged between 2 and 12%, with the lowest intraclass correlation coefficient in anterior cingulate regions. Conclusion We conclude that the test-retest variability of [18F]-setoperone PET in elderly subjects is comparable to that of [18F]-setoperone and other 5HT2AR radiotracers in younger subject samples. PMID:19580676

  6. Intra-Tumor Distribution and Test-Retest Comparisons of Physiological Parameters quantified by Dynamic Contrast-Enhanced MRI in Rat U251 Glioma

    PubMed Central

    Aryal, Madhava P.; Nagaraja, Tavarekere N.; Brown, Stephen L.; Lu, Mei; Bagher-Ebadian, Hassan; Ding, Guangliang; Panda, Swayamprava; Keenan, Kelly; Cabral, Glauber; Mikkelsen, Tom; Ewing, James R.

    2014-01-01

    The distribution of dynamic contrast enhanced MRI (DCE-MRI) parametric estimates in a rat U251 glioma model was analyzed. Using Magnevist as contrast agent (CA), 17 nude rats implanted with U251 cerebral glioma were studied by DCE-MRI twice in a 24 h interval. A data-driven analysis selected one of three models to estimate either: 1) CA plasma volume (vp), 2) vp and forward volume transfer constant (Ktrans; or 3) vp, Ktrans, and interstitial volume fraction (ve), constituting Models 1, 2 and 3, respectively. CA interstitial distribution volume (VD) was estimated in Model 3 regions by Logan plots. Regions of interest (ROIs) were selected by model. In the Model 3 ROI, descriptors of parameter distributions – mean, median, variance and skewness – were calculated and compared between the two time points for repeatability. All distributions of parametric estimates in Model 3 ROIs were positively skewed. Test-retest differences between population summaries for any parameter were not significant (p≥0.10; Wilcoxon signed-rank and paired t tests). This and similar measures of parametric distribution and test-retest variance from other tumor models can be used to inform the choice of biomarkers that best summarize tumor status and treatment effects. PMID:25125367

  7. Reliability and validity of the Yo-Yo intermittent recovery test level 1 in young soccer players.

    PubMed

    Deprez, Dieter; Coutts, Aaron James; Lenoir, Matthieu; Fransen, Job; Pion, Johan; Philippaerts, Renaat; Vaeyens, Roel

    2014-01-01

    The present study investigated the test-retest reliability from the Yo-Yo IR1 (distance and heart rate responses), and the ability of the Yo-Yo IR1 to differentiate between elite and non-elite youth soccer players. A total of 228 youth soccer players (11-17 years) participated: 78 non-elite players to examine the test-retest reliability within 1 week, added with 150 elite players to investigate the construct validity. The main finding was that the distance covered was adequately reproducible in the youngest age groups (U13 and U15) and highly reproducible in the oldest age group (U17). Also, the physiological responses were highly reproducible in all age groups. Moreover, the Yo-Yo IR1 test had a high-discriminative ability to distinguish between elite and non-elite young soccer players. Furthermore, age-related standards for the Yo-Yo IR1 established for elite and non-elite groups in this study may be used for comparison of other young soccer players.

  8. PREDICTION OF RELIABILITY IN BIOGRAPHICAL QUESTIONNAIRES.

    ERIC Educational Resources Information Center

    STARRY, ALLAN R.

    THE OBJECTIVES OF THIS STUDY WERE (1) TO DEVELOP A GENERAL CLASSIFICATION SYSTEM FOR LIFE HISTORY ITEMS, (2) TO DETERMINE TEST-RETEST RELIABILITY ESTIMATES, AND (3) TO ESTIMATE RESISTANCE TO EXAMINEE FAKING, FOR REPRESENTATIVE BIOGRAPHICAL QUESTIONNAIRES. TWO 100-ITEM QUESTIONNAIRES WERE CONSTRUCTED THROUGH RANDOM ASSIGNMENT BY CONTENT AREA OF 200…

  9. Test-Retest Stability and Concurrent Validity of Two Reading Tests with a Drug-Abusing Population.

    ERIC Educational Resources Information Center

    Johnson, Mark E.; Fisher, Dennis G.; Rhodes, Fen; Booth, Robert

    1996-01-01

    The Wide Range Achievement Test-Revised and the Woodcock Reading Mastery Tests-Revised were administered twice to 269 current drug abusers over an average time interval of 204.2 days. Overall, the study demonstrates that the two instruments have strong psychometric properties and that results from current drug abusers are reliable. (SLD)

  10. Validity and Reliability of the School Physical Activity Environment Questionnaire

    ERIC Educational Resources Information Center

    Martin, Jeffrey J.; McCaughtry, Nate; Flory, Sara; Murphy, Anne; Wisdom, Kimberlydawn

    2011-01-01

    The goal of the current study was to establish the factor validity of the Questionnaire Assessing School Physical Activity Environment (Robertson-Wilson, Levesque, & Holden, 2007) using confirmatory factor analysis procedures. Another goal was to establish internal reliability and test-retest reliability. The confirmatory factor analysis…

  11. The Validity and Reliability of the Mobbing Scale (MS)

    ERIC Educational Resources Information Center

    Yaman, Erkan

    2009-01-01

    The aim of this research is to develop the Mobbing Scale and examine its validity and reliability. The sample of the study consisted of 515 persons from Sakarya and Bursa. In this study, construct validity, internal consistency, test-retest reliability, and item analysis of the scale were examined. As a result of factor analysis for construct…

  12. A Self-Paced Intermittent Protocol on a Non-Motorised Treadmill: A Reliable Alternative to Assessing Team-Sport Running Performance

    PubMed Central

    Tofari, Paul J.; McLean, Blake D.; Kemp, Justin; Cormack, Stuart

    2015-01-01

    This study assessed the reliability of a ‘self-paced’ 30-min, team-sport running protocol on a Woodway Curve 3.0 non-motorised treadmill (NMT). Ten male team-sport athletes (20.3 ± 1.2 y, 74.4 ± 9.7 kg, VO2peak 57.1 ± 4.5 ml·kg-1·min-1) attended five sessions (VO2peak testing + familiarisation; four reliability trials). The 30-min protocol consisted of three identical 10-min activity blocks, with visual and audible commands directing locomotor activity; however, actual speeds were self-selected by participants. Reliability of variables was estimated using typical error ± 90% confidence limits expressed as a percentage [coefficient of variation (CV)] and intraclass correlation coefficient. The smallest worthwhile change (SWC) was calculated as 0.2 × between participant standard deviation. Peak/mean speed and distance variables assessed across the 30-min protocol exhibited a CV < 5%, and < 6% for each 10-min activity block. All power variables exhibited a CV < 7.5%, except walking (CV 8.3-10.1%). The most reliable variables were maximum and mean sprint speed (CV < 2%). All variables produced a CV% greater than the SWC. A self-paced, team-sport running protocol performed on a NMT produces reliable speed/distance and power data. Importantly, a single familiarisation session allowed for adequate test-retest reliability. The self-paced design provides an ecologically-valid alternative to externally-paced team-sport running simulations. Key points Self-paced team-sport running protocols on a curved NMT that closely match the locomotor demands of competition deliver reliable test-retest measures of speed, distance and power. Such protocols may be sensitive to changes in running profile following an intervention that may not be detectable during externally-paced protocols. One familiarisation session is adequate to ensure test-retest reliability. PMID:25729291

  13. The Satz-Mogel short form of the Wechsler Adult Intelligence Scale--revised: effects of global mental status and age on test-retest reliability.

    PubMed

    McPherson, S; Buckwalter, G J; Tingus, K; Betz, B; Back, C

    2000-10-01

    Abbreviated versions of the Wechsler Adult Intelligence Scale-Revised (WAIS-R) have been developed as time saving devices that provide accurate estimates of overall level of general intellectual functioning while decreasing test administration time. The Satz-Mogel short form of the WAIS-R has received substantial attention in the literature as an accurate measure of intellectual functions when compared with the Full WAIS-R. However, most studies comparing the Satz-Mogel version to the Full WAIS-R have only provided correlational analyses. Our study was an attempt to apply a more rigorous statistical methodology in determining if the Full WAIS-R and abbreviated versions are equivalent. We explored the impact of level of global mental status and age on the Satz-Mogel version. Although the two forms of the test correlated highly, repeated measures design indicated significant differences between Satz-Mogel and Full WAIS-R when participants were divided into groups based on level of global impairment and age. Our results suggest that the Satz-Mogel version of the test may not be equivalent to the full WAIS-R and is likely to misrepresent a patient's level of intellectual functioning, particularly for patients with progressive degenerative conditions. The implications of applying Satz-Mogel scoring to the Wechsler Adult Intelligence Scale-III (WAIS-III) are discussed.

  14. Issues in the Educational, Psychological Assessment of Visually Impaired Children: Test-Retest Reliability of the Williams Intelligence Test for Children with Defective Vision

    ERIC Educational Resources Information Center

    Tobin, Michael J.; Hill, Eileen W.

    2011-01-01

    The article discusses some problems confronting teachers and psychologists when making decisions as to how to use the currently available test procedures. It reports data gathered on three separate occasions on the performance of a group of blind and partially sighted children on the Williams Intelligence Test which is the only specialist IQ test…

  15. Criterion Validity, Severity Cut Scores, and Test-Retest Reliability of the Beck Depression Inventory-II in a University Counseling Center Sample

    ERIC Educational Resources Information Center

    Sprinkle, Stephen D.; Lurie, Daphne; Insko, Stephanie L.; Atkinson, George; Jones, George L.; Logan, Arthur R.; Bissada, Nancy N.

    2002-01-01

    The criterion validity of the Beck Depression Inventory-II (BDI-II; A. T. Beck, R. A. Steer, & G. K. Brown, 1996) was investigated by pairing blind BDI-II administrations with the major depressive episode portion of the Structured Clinical Interview for DSM-IV Axis I Disorders (SCID-I; M. B. First, R. L. Spitzer, M. Gibbon, & J. B. W.…

  16. The "Reading the Mind in the Eyes" Test: Investigation of Psychometric Properties and Test-Retest Reliability of the Persian Version

    ERIC Educational Resources Information Center

    Khorashad, Behzad S.; Baron-Cohen, Simon; Roshan, Ghasem M.; Kazemian, Mojtaba; Khazai, Ladan; Aghili, Zahra; Talaei, Ali; Afkhamizadeh, Mozhgan

    2015-01-01

    The psychometric properties of the Persian "Reading the Mind in the Eyes" test were investigated, so were the predictions from the Empathizing-Systemizing theory of psychological sex differences. Adults aged 16-69 years old (N = 545, female = 51.7%) completed the test online. The analysis of items showed them to be generally acceptable.…

  17. Measuring injury risk factors: question reliability in a statewide sample

    PubMed Central

    Koziol-McLain, J.; Brand, D.; Morgan, D.; Leff, M.; Lowenstein, S.

    2000-01-01

    Background—Recently (1996–98), Colorado added 15 questions pertaining to injury related risks and behaviors to the behavioral risk factor surveillance system (BRFSS). Questions addressed bicycle helmet use, traffic crashes, exposure to violence, suicidal behavior, and gun storage. Objective—To measure the test-retest reliability of these injury related questions. Methods—Of 330 BRFSS participants, 229 (69%) were called a second time and reasked nine selected injury questions. Retests were completed 7–28 days after the original interview. Results—Test-retest agreement was very high (κ >0.80) for bicycle helmet use, domestic police visits, and gun ownership. All other injury risk questions had substantial agreement (κ >0.60). Conclusions—The injury related questions added to the Colorado BRFSS have high test-retest reliability. PMID:10875674

  18. Validity and Reliability of the Community Balance and Mobility Scale in Individuals With Knee Osteoarthritis

    PubMed Central

    Takacs, Judit; Garland, S. Jayne; Carpenter, Mark G.

    2014-01-01

    Background There is a high incidence of falls in older adults with knee osteoarthritis (OA). Adequate dynamic balance and mobility reduce the risk of falls; however, there are currently no validated, advanced tests of dynamic balance and mobility for individuals with knee OA. Objective The purpose of this study was to determine the convergent validity, known-groups validity, and test-retest reliability of a dynamic test of balance and mobility, the Community Balance and Mobility Scale (CB&M), in a knee OA population. Design A cross-sectional design was used. Methods Twenty-five individuals aged 50 years and older with medial knee OA and an equal number of healthy controls completed the CB&M and other tests of balance and mobility, including the Berg Balance Scale, the Timed “Up & Go” Test, a test of maximal single-leg stance time, and the 10-Meter Walk Test (self-selected and fast walking speed). Convergent validity of balance tests with the CB&M was assessed using Pearson product moment correlation coefficients, and known-groups validity was assessed using independent t tests. Test-retest reliability of the CB&M was assessed using intraclass correlation coefficients (ICCs) and standard error of measurement (SEM). Results Scores on the CB&M were significantly correlated with all measures of balance and mobility for those with knee OA. There were significant differences in CB&M scores between groups. Scores on the CB&M were highly reliable in people with knee OA (ICC=.95, 95% confidence interval [95% CI]=0.70 to 0.99; SEM=3, 95% CI=2.68 to 4.67). Limitations Few participants had severe knee OA. Conclusions The CB&M displayed moderate convergent validity, excellent known-groups validity, and high test-retest reliability. The CB&M can be used as a valid and reliable tool to assess dynamic balance and mobility deficits in people with knee OA. PMID:24557649

  19. Reliability and validity of scores on the Slosson Visual Perceptual Skill Screener.

    PubMed

    Erford, Bradley T; Snyder, Henry

    2004-10-01

    Psychometric characteristics of the Slosson Visual Perceptual Skill Screener were studied using three independent samples of 595 boys and 578 girls ages 5 to 10 years. Adequate characteristics for item selection were indicated by item difficulty (Mdn=.49) and item discrimination (Mdn=.59). Interitem consistency of .93 (n1 = 1,045) was recorded for the total scale, while 30-day test-retest reliability was .80 (n2=55). Convergent validity was estimated using the Bender Visual-Motor Gestalt test (Koppitz developmental scoring system; r = .43, n3=47), the Developmental Test of Visuo-motor Integration, Visual Perception subtest (r =.62, n3 =73), and the Test of Visual Perceptual Skills-Revised-Nonmotor Total Score (r = .63, n2 =59).

  20. The revised scale for caregiving self-efficacy: reliability and validity studies.

    PubMed

    Steffen, Ann M; McKibbin, Christine; Zeiss, Antonette M; Gallagher-Thompson, Dolores; Bandura, Albert

    2002-01-01

    Two samples of family caregivers (Study 1: N = 169; Study 2: N = 145) of cognitively impaired older adults were used to revise, extend, and evaluate a measure of perceived self-efficacy for caregiving tasks. The Revised Scale for Caregiving Self-Efficacy measures 3 domains of caregiving self-efficacy: Obtaining Respite, Responding to Disruptive Patient Behaviors, and Controlling Upsetting Thoughts. The 3 subscales show strong internal consistency and adequate test-retest reliability. Construct validity is supported by relationships between these 3 facets of perceived caregiving efficacy and depression, anxiety, anger, perceived social support, and criticism expressed in speech samples. The Revised Scale for Caregiving Self-Efficacy has potential uses for both research and clinical purposes.

  1. The Skin Cancer and Sun Knowledge (SCSK) Scale: Validity, Reliability, and Relationship to Sun-Related Behaviors Among Young Western Adults.

    PubMed

    Day, Ashley K; Wilson, Carlene; Roberts, Rachel M; Hutchinson, Amanda D

    2014-08-01

    Increasing public knowledge remains one of the key aims of skin cancer awareness campaigns, yet diagnosis rates continue to rise. It is essential we measure skin cancer knowledge adequately so as to determine the nature of its relationship to sun-related behaviors. This study investigated the psychometric properties of a new measure of skin cancer knowledge, the Skin Cancer and Sun Knowledge (SCSK) scale. A total of 514 Western young adults (females n = 320, males n = 194) aged 18 to 26 years completed measures of skin type, skin cancer knowledge, tanning behavior, sun exposure, and sun protection. Two-week test-retest of the SCSK was conducted with 52 participants. Internal reliability of the SCSK scale was acceptable (KR-20 = .69), test-retest reliability was high (r = .83, n = 52), and acceptable levels of face, content, and incremental validity were demonstrated. Skin cancer knowledge (as measured by SCSK) correlated with sun protection, sun exposure, and tanning behaviors in the female sample, but not in the males. Skin cancer knowledge appears to be more relevant to the behavior of young women than that of young males. We recommend that future research establish the validity of the SCSK across a range of participant groups.

  2. Reliability Measure of a Clinical Test: Appreciation of Music in Cochlear Implantees (AMICI)

    PubMed Central

    Cheng, Min-Yu; Spitzer, Jaclyn B.; Shafiro, Valeriy; Sheft, Stanley; Mancuso, Dean

    2014-01-01

    Purpose The goals of this study were (1) to investigate the reliability of a clinical music perception test, Appreciation of Music in Cochlear Implantees (AMICI), and (2) examine associations between the perception of music and speech. AMICI was developed as a clinical instrument for assessing music perception in persons with cochlear implants (CIs). The test consists of four subtests: (1) music versus environmental noise discrimination, (2) musical instrument identification (closed-set), (3) musical style identification (closed-set), and (4) identification of musical pieces (open-set). To be clinically useful, it is crucial for AMICI to demonstrate high test-retest reliability, so that CI users can be assessed and retested after changes in maps or programming strategies. Research Design Thirteen CI subjects were tested with AMICI for the initial visit and retested again 10–14 days later. Two speech perception tests (consonant-nucleus-consonant [CNC] and Bamford-Kowal-Bench Speech-in-Noise [BKB-SIN]) were also administered. Data Analysis Test-retest reliability and equivalence of the test’s three forms were analyzed using paired t-tests and correlation coefficients, respectively. Correlation analysis was also conducted between results from the music and speech perception tests. Results Results showed no significant difference between test and retest (p > 0.05) with adequate power (0.9) as well as high correlations between the three forms (Forms A and B, r = 0.91; Forms A and C, r = 0.91; Forms B and C, r = 0.95). Correlation analysis showed high correlation between AMICI and BKB-SIN (r = −0.71), and moderate correlation between AMICI and CNC (r = 0.4). Conclusions The study showed AMICI is highly reliable for assessing musical perception in CI users. PMID:24384082

  3. Reliability Generalization of Scores on the Spielberger State-Trait Anxiety Inventory.

    ERIC Educational Resources Information Center

    Barnes, Laura L. B.; Harp, Diane; Jung, Woo Sik

    2002-01-01

    Conducted a reliability generalization study for the State-Trait Anxiety Inventory (C. Spielberger, 1983) by reviewing and classifying 816 research articles. Average reliability coefficients were acceptable for both internal consistency and test-retest reliability, but variation was present among the estimates. Other differences are discussed.…

  4. Are Problems Prevalent and Stable in Non-Clinical Populations? Problems and Test-Retest Stability of a Patient-Generated Measure, PSYCHLOPS (Psychological Outcome Profiles), in a Non-Clinical Student Sample

    ERIC Educational Resources Information Center

    Evans, Chris; Ashworth, Mark; Peters, Marilyn

    2010-01-01

    In straightened times counselling must evidence the changes it promotes on reputable measures. Patient-generated measures complement nomothetic measures and may be nearer the ethos of counselling in eliciting individuals' problems. Scores from such measures from non-clinical samples are rarely reported, making their test-retest stability…

  5. Structural validity and reliability of the Spanish version of the White Bear Suppression Inventory (WBSI) in a sample of the general Spanish population.

    PubMed

    González Rodríguez, Manuel; Avero Delgado, Pedro; Rovella, Anna Teresa; Cubas León, Rosario

    2008-11-01

    This paper introduces the validation of the Spanish adaptation of the White Bear Suppression Inventory (WBSI) by Wegner and Zanakos (1994). A sample of 833 people from the general population completed the WBSI along with other questionnaires. The exploratory factor analysis and the confirmatory factor analysis supported a two-factor solution accounting for 51.8% of the cumulative variance. This structure is comprised of the two following factors: unwanted intrusive thoughts (alpha = .87, r = .70) and actions of distraction and suppression of thoughts (alpha = .80, r = .60). Both internal consistency reliability (alpha = .89) and test-retest reliability (r = .71) showed adequate homogeneity, sound consistency, and stability over time. The results are discussed bearing in mind both isolated factors and the possible relationships of the suppression factor with automatic negative thoughts and insomnia.

  6. Reliability of the Koppitz scoring system for the Bender Gestalt Test.

    PubMed

    Hustak, T L; Dinning, W D; Andert, J N

    1976-04-01

    This study investigated the test-retest reliability of the Koppitz scoring system with Bender Gestalt protocols of adult retardates. Results of a sample of 74 adult retardates yielded a correlation of .80 over an interval of 8 to 146 months. A directional measure of change between error scores on the first and second administrations was not significant, which suggests that the test-retest reliability coefficient is an accurate estimate of the Koppitz scoring system for adult retardates. Scorer reliability for three independent scorers ranged from .92 to .95, which suggests comparability to other investigations with different populations.

  7. Reliability and validity of World Health Organization Quality of Life-100 in homeless substance-dependent veteran population.

    PubMed

    Garcia-Rea, Elizabeth; LePage, James P

    2008-01-01

    The number of homeless individuals and specifically homeless veterans is increasing. Accurate assessment of quality of life is an important need in working with this population because of the myriad problems encountered. However, the reliability and validity of quality-of-life instruments have not been assessed in this population. This study evaluated the psychometric properties of the U.S. version of the World Health Organization Quality of Life-100 in a homeless veteran population. Results found adequate internal consistency for all domain and most facet scores, while test-retest stability varied for the facet scores. We confirmed validity by using subsamples with physical, emotional, and social problems and by comparing scores from populations that returned to the community with employment and housing. Limitations and directions for future study are discussed.

  8. The Teacher-Teacher Reliability of the CRI and ERI.

    ERIC Educational Resources Information Center

    Christine, Charles T.; And Others

    Thirty-two children aged 7 to 12 participated in a study to determine the reliability of the Ekwall Reading Inventory (ERI) and the Classroom Reading Inventory (CRI). The children were randomly assigned to take one of the two inventories, which were administered by four different specially trained teachers. The study used a test-retest design, in…

  9. Reliability and predictive validity of energy intake measures from the 24-hour dietary recalls of homebound older adults.

    PubMed

    Sun, Yanhui; Roth, David L; Ritchie, Christine S; Burgio, Kathryn L; Locher, Julie L

    2010-05-01

    Twenty-four-hour dietary recalls are used frequently to study homebound older adults' eating behaviors. However, the reliability and predictive validity of this method have not been established in this population. The purpose of this study was to examine whether homebound older adults provide reliable and valid measures of total energy intake in 24-hour dietary recalls. Two hundred thirty homebound older adults were interviewed in their homes using a questionnaire to assess eating behaviors and factors that could affect those behaviors. Participants completed three 24-hour dietary recalls at baseline and again at 6-month follow-up. Two subsamples were identified for analyses. For participants who were not hospitalized during the 6-month interval and had their weight measured at both assessments (n=52), sufficient test-retest reliability of energy intake was observed (r=0.59), but energy intake deficiencies relative to estimated energy requirements did not predict actual weight loss (r=0.08). When this sample was supplemented with 91 participants who experienced any adverse event (weight loss of 2.5% or more, hospitalization, institutionalization, or mortality) in the 6-month period (n=143), adverse events were more likely to occur for those with insufficient energy intake (odds ratio 3.49, P=0.009), and in white participants compared to African-American participants (odds ratio 3.13, P=0.016). Adequate test-retest reliability of the 24-hour dietary recall was demonstrated, but additional research with larger samples and longer follow-up intervals is needed to better evaluate the predictive validity of energy intake measures for this population.

  10. PARAMETRIC IMAGING AND TEST-RETEST VARIABILITY OF 11C-(+)-PHNO BINDING TO D2/D3 DOPAMINE RECEPTORS IN HUMANS ON THE HRRT PET SCANNER

    PubMed Central

    Gallezot, Jean-Dominique; Zheng, Ming-Qiang; Lim, Keunpoong; Lin, Shu-fei; Labaree, David; Matuskey, David; Huang, Yiyun; Ding, Yu-Shin; Carson, Richard E.; Malison, Robert T.

    2014-01-01

    11C-(+)-PHNO is an agonist radioligand for imaging dopamine D2 and D3 receptors in the human brain with PET. In this study we evaluated the reproducibility of 11C-(+)-PHNO binding parameters using a within-day design and assessed parametric imaging methods. Methods Repeated studies were performed in eight subjects, with simultaneous measurement of the arterial input function and plasma free fraction. Two 11C-(+)-PHNO scans on the same subject were separated by 5.4±0.7 h. After evaluating compartment models, 11C-(+)-PHNO volumes of distribution VT and VT/fP and binding potentials BPND, BPP and BPF were quantified using the multilinear analysis MA1, with the cerebellum as reference region. Parametric images of BPND were also computed using SRTM and SRTM2. Results The test-retest variability of 11C-(+)-PHNO BPND was 9% in D2-rich regions (caudate and putamen). Among D3-rich regions, variability was low in pallidum (6%), but higher in substantia nigra (19%), thalamus (14%) and hypothalamus (21%). No significant mass carry-over effect was observed in D3-rich regions, although a trend in BPND was present in substantia nigra (−14±15%). Due to the relatively fast kinetics, low noise BPND parametric images were obtained with both SRTM and SRTM2 without spatial smoothing. Conclusion 11C-(+)-PHNO can be used to compute low noise parametric images in both D2 and D3 rich regions in humans. PMID:24732151

  11. Effects of reversible inactivation of the medial septum on rat exploratory behavior in the elevated plus-maze using a test-retest paradigm.

    PubMed

    Lamprea, Marisol Rodríguez; Garcia, Andrea Milena Becerra; Morato, Silvio

    2010-06-26

    The effect of intraseptal injections of lidocaine before a first or a second session in the elevated plus-maze, in a test-retest paradigm, was investigated. In addition to gross session analyses, a minute-by-minute analysis of the sessions was used to evaluate both anxiety and memory. Lidocaine injections before the test session produced increases in the frequency of entries, time spent and distance run in the open arms without affecting activity occurring in the closed arms. During the retest session, saline- and lidocaine-treated rats exhibited increased indices of anxiety and lidocaine-treated rats exhibited decreased closed-arm entries. The minute-by-minute analysis showed a faster decrease in anxiety-related behaviors during the test session by saline- than by lidocaine-treated rats and a significant decrease in closed-arm exploration by saline-treated rats, but not by lidocaine-treated ones. Lidocaine injection before the retest session produced increases in the frequency of entries, time spent and distance run in the open arms in the second session when compared with saline-treated rats. Minute-by-minute analysis showed an increase in the time spent in the open arms by lidocaine animals at the beginning of the retest session in comparison to saline animals and a significant decrease in closed-arm exploration by both groups. These results suggest that inactivation of the medial septum by lidocaine affects the expression of unconditioned and conditioned forms of anxiety in the elevated plus-maze and, in a lesser way, the acquisition and retention of spatial information.

  12. Repeatability of quantitative FDG-PET/CT and contrast enhanced CT in recurrent ovarian carcinoma: test retest measurements for tumor FDG uptake, diameter and volume

    PubMed Central

    Rockall, Andrea G.; Avril, Norbert; Lam, Raymond; Iannone, Robert; Mozley, P. David; Parkinson, Christine; Bergstrom, Donald; Sala, Evis; Sarker, Shah-Jalal; McNeish, Iain A.; Brenton, James D.

    2014-01-01

    Purpose Repeatability of baseline FDG-PET/CT measurements has not been tested in ovarian cancer. This dual-center, prospective study assessed variation in tumor FDG uptake, tumor diameter (TD) and tumor volume (TV) from sequential FDG-PET/CT and contrast-enhanced CT (CECT) in patients with recurrent platinum-sensitive ovarian cancer. Methods Patients underwent two pre-treatment baseline FDG-PET/CT (n=21) and CECT (n=20) at 2 clinical sites with different PET/CT instruments. Patients were included if they had at least one target lesion (TL) in the abdomen with an SUV maximum (SUVmax) of ≥2.5 and a long axis diameter of ≥15mm. Two independent reading methods were used to evaluate repeatability of TD and SUV uptake: on site and at an imaging clinical research organization (CRO). TV reads were only performed by CRO. In each reading set, TLs were independently measured on sequential imaging. Results Median time between FDG-PET/CT was 2 days (range 1-7). For site reads, concordance correlation coefficient (CCC) for SUVmean, SUVmax and TD were 0.95, 0.94 and 0.99 respectively. Repeatability coefficients were 16.3%, 17.3% and 8.8% for SUVmean, SUVmax and TD respectively. Similar results were observed for CRO reads. TV CCC was 0.99 with a repeatability coefficient of 28.1%. Conclusions There was excellent test/retest repeatability for FDG-PET/CT quantitative measurements across two sites and two independent reading methods. Cut-off values for determining change in SUVmean, SUVmax and TV establish limits to determine metabolic and/or volumetric response to treatment in platinum-sensitive relapsed ovarian cancer. PMID:24573555

  13. Characterization of regional left ventricular function in nonhuman primates using magnetic resonance imaging biomarkers: a test-retest repeatability and inter-subject variability study.

    PubMed

    Sampath, Smita; Klimas, Michael; Feng, Dai; Baumgartner, Richard; Manigbas, Elaine; Liang, Ai-Leng; Evelhoch, Jeffrey L; Chin, Chih-Liang

    2015-01-01

    Pre-clinical animal models are important to study the fundamental biological and functional mechanisms involved in the longitudinal evolution of heart failure (HF). Particularly, large animal models, like nonhuman primates (NHPs), that possess greater physiological, biochemical, and phylogenetic similarity to humans are gaining interest. To assess the translatability of these models into human diseases, imaging biomarkers play a significant role in non-invasive phenotyping, prediction of downstream remodeling, and evaluation of novel experimental therapeutics. This paper sheds insight into NHP cardiac function through the quantification of magnetic resonance (MR) imaging biomarkers that comprehensively characterize the spatiotemporal dynamics of left ventricular (LV) systolic pumping and LV diastolic relaxation. MR tagging and phase contrast (PC) imaging were used to quantify NHP cardiac strain and flow. Temporal inter-relationships between rotational mechanics, myocardial strain and LV chamber flow are presented, and functional biomarkers are evaluated through test-retest repeatability and inter subject variability analyses. The temporal trends observed in strain and flow was similar to published data in humans. Our results indicate a dominant dimension based pumping during early systole, followed by a torsion dominant pumping action during late systole. Early diastole is characterized by close to 65% of untwist, the remainder of which likely contributes to efficient filling during atrial kick. Our data reveal that moderate to good intra-subject repeatability was observed for peak strain, strain-rates, E/circumferential strain-rate (CSR) ratio, E/longitudinal strain-rate (LSR) ratio, and deceleration time. The inter-subject variability was high for strain dyssynchrony, diastolic strain-rates, peak torsion and peak untwist rate. We have successfully characterized cardiac function in NHPs using MR imaging. Peak strain, average systolic strain-rate, diastolic E

  14. Test-Retest Reproducibility of the Intrinsic Default Mode Network: Influence of Functional Magnetic Resonance Imaging Slice-Order Acquisition and Head-Motion Correction Methods.

    PubMed

    Marchitelli, Rocco; Collignon, Olivier; Jovicich, Jorge

    2017-03-01

    Head motion is a known challenge in resting-state functional magnetic resonance imaging studies for biasing functional connectivity (FC) among distinct anatomical regions. These persist even with small motion, limiting comparisons of groups with different head-motion characteristics. This motivates an interest in the optimization of acquisition and correction strategies to minimize motion sensitivity. In this test-retest (TRT) study of healthy young volunteers (N = 23), we investigate the effects of slice-order acquisitions (sequential or interleaved) and head-motion correction methods (volume- or slice-based) on the TRT reproducibility of intrinsic connectivity of the default mode network (DMN). We evaluated the TRT reproducibility of the entire DMN and each main node using the absolute percentage error, intraclass correlation coefficient (ICC), and the Jaccard coefficient. Regardless of slice-order acquisition, the slice-based motion correction method systematically estimated larger motion and returned significantly higher temporal signal-to-noise ratio. Although consistently extracted across all acquisition and motion correction approaches, DMN connectivity was sensitive to these choices. However, the TRT reproducibility of the whole DMN was stable and showed no sensitivity to the methods tested (absolute reproducibility ∼7%, ICC = 0.47, and Jaccard = 40%). Percentage errors and ICCs were consistent across single nodes, but the Jaccard coefficients were not. The posterior cingulate was the most reproducible node (Jaccard = 52%), whereas the anterior cingulate was the least reproducible (Jaccard = 30%). Our study suggests that the slice-order and motion correction methods evaluated offer comparable sensitivity to detect DMN connectivity changes in a longitudinal study of individuals with low head-motion characteristics, but that controlling for the consistency in acquisition and correction protocols is important in cross-sectional studies.

  15. Longitudinal Reliability of Self-Reported Age at Menarche in Adolescent Girls: Variability across Time and Setting

    ERIC Educational Resources Information Center

    Dorn, Lorah D.; Sontag-Padilla, Lisa M.; Pabst, Stephanie; Tissot, Abbigail; Susman, Elizabeth J.

    2013-01-01

    Age at menarche is critical in research and clinical settings, yet there is a dearth of studies examining its reliability in adolescents. We examined age at menarche during adolescence, specifically, (a) average method reliability across 3 years, (b) test-retest reliability between time points and methods, (c) intraindividual variability of…

  16. Study on the Validity and Reliability of Melbourne Decision Making Scale in Turkey

    ERIC Educational Resources Information Center

    Çolakkadioglu, Oguzhan; Deniz, M. Engin

    2015-01-01

    This study is to analyze the validity and reliability of Melbourne Decision Making Questionnaire (MDMQ). The sample consisted of 650 university students. The structural validity of the MDMQ, as well as correlations among its sub-scales, measure-bound validity, internal consistency, item total correlations and test-retest reliability coefficients…

  17. Reliability and Validity of the Evidence-Based Practice Confidence (EPIC) Scale

    ERIC Educational Resources Information Center

    Salbach, Nancy M.; Jaglal, Susan B.; Williams, Jack I.

    2013-01-01

    Introduction: The reliability, minimal detectable change (MDC), and construct validity of the evidence-based practice confidence (EPIC) scale were evaluated among physical therapists (PTs) in clinical practice. Methods: A longitudinal mail survey was conducted. Internal consistency and test-retest reliability were estimated using Cronbach's alpha…

  18. Statistical Considerations in Choosing a Test Reliability Coefficient. ACT Research Report Series, 2012 (10)

    ERIC Educational Resources Information Center

    Woodruff, David; Wu, Yi-Fang

    2012-01-01

    The purpose of this paper is to illustrate alpha's robustness and usefulness, using actual and simulated educational test data. The sampling properties of alpha are compared with the sampling properties of several other reliability coefficients: Guttman's lambda[subscript 2], lambda[subscript 4], and lambda[subscript 6]; test-retest reliability;…

  19. Feasibility and Reliability of Physical Fitness Tests in Older Adults with Intellectual Disability: A Pilot Study

    ERIC Educational Resources Information Center

    Hilgenkamp, Thessa I. M.; van Wijck, Ruud; Evenhuis, Heleen M.

    2012-01-01

    Background: Physical fitness is relevant for wellbeing and health, but knowledge on the feasibility and reliability of instruments to measure physical fitness for older adults with intellectual disability is lacking. Methods: Feasibility and test-retest reliability of a physical fitness test battery (Box and Block Test, Response Time Test, walking…

  20. Student Risk Screening Scale: Initial Evidence for Score Reliability and Validity at the High School Level

    ERIC Educational Resources Information Center

    Lane, Kathleen Lynne; Kalberg, Jemma Robertson; Parks, Robin J.; Carter, Erik W.

    2008-01-01

    This article presents findings from a study of the reliability and validity of the "Student Risk Screening Scale" for use with high school students (N = 674). Results revealed high internal consistency, test-retest stability, interrater reliability, and convergent validity with the "Strengths and Difficulties Questionnaire". Predictive validity…

  1. Factor Structure, Reliability, and Validity of the Japanese Version of the Disgust Propensity and Sensitivity Scale-Revised

    PubMed Central

    Tanaka, Tsunehiko; Yamada, Yuki

    2016-01-01

    The Disgust Propensity and Sensitivity Scale-Revised is one of the most widely used measures of individual differences for the emotion of disgust. It consists of 2 subscales: disgust propensity and disgust sensitivity. This study examined the factor structure, reliability, and validity of the Japanese version of the revised Disgust Propensity and Sensitivity Scale. Japanese participants (N = 1067) completed the scale as well as the Padua Inventory, Anxiety Sensitivity Index, State-Trait Anxiety Inventory, and Positive and Negative Affective Schedule. The participants were divided into 3 samples: Sample 1 (n = 481, mean age = 23.05, 186 males and 295 females); Sample 2 (n = 492, mean age = 20.27, 243 males and 249 females); and Sample 3 (n = 94, mean age = 22.68, 35 males and 58 females). We combined Samples 1 and 2 (n = 973, mean age = 21.66, 429 males and 544 females), and then created 2 subsamples to ensure the mutual independence of the samples used for two different factor analyses: subsample 1 (n = 486, mean age = 21.86, 199 male and 287 female) for exploratory factor analysis and subsample 2 (n = 487, mean age = 21.40, 230 male and 257 female) for confirmatory factor analysis. We examined test-retest reliability using Sample 3, and construct validity using Samples 1, 2, and the combined sample. Exploratory and confirmatory factor analyses revealed that the item-factor structure of the Japanese Disgust Propensity and Sensitivity Scale-Revised was identical to the English version. Moreover, the scale showed good internal consistency, test-retest reliability, and construct validity for empirical support as provided by correlational analyses. Results revealed adequate psychometric properties of the scale. This study provided the first examples of empirical support for the DPSS-R-J. PMID:27732659

  2. Quality of life in oncological patients with oropharyngeal dysphagia: validity and reliability of the Dutch version of the MD Anderson Dysphagia Inventory and the Deglutition Handicap Index.

    PubMed

    Speyer, Renée; Heijnen, Bas J; Baijens, Laura W; Vrijenhoef, Femke H; Otters, Elsemieke F; Roodenburg, Nel; Bogaardt, Hans C

    2011-12-01

    Quality of life is an important outcome measurement in objectifying the current health status or therapy effects in patients with oropharyngeal dysphagia. In this study, the validity and reliability of the Dutch version of the Deglutition Handicap Index (DHI) and the MD Anderson Dysphagia Inventory (MDADI) have been determined for oncological patients with oropharyngeal dysphagia. At Maastricht University Medical Center, 76 consecutive patients were selected and asked to fill in three questionnaires on quality of life related to oropharyngeal dysphagia (the SWAL-QOL, the MDADI, and the DHI) as well as a simple one-item visual analog Dysphagia Severity Scale. None of the quality-of-life questionnaires showed any floor or ceiling effect. The test-retest reliability of the MDADI and the Dysphagia Severity Scale proved to be good. The test-retest reliability of the DHI could not be determined because of insufficient data, but the intraclass correlation coefficients were rather high. The internal consistency proved to be good. However, confirmatory factor analysis could not distinguish the underlying constructs as defined by the subscales per questionnaire. When assessing criterion validity, both the MDADI and the DHI showed satisfactory associations with the SWAL-QOL (reference or gold standard) after having removed the less relevant subscales of the SWAL-QOL. In conclusion, when assessing the validity and reliability of the Dutch version of the DHI or the MDADI, not all psychometric properties have been adequately met. In general, because of difficulties in the interpretation of study results when using questionnaires lacking sufficient psychometric quality, it is recommended that researchers strive to use questionnaires with the most optimal psychometric properties.

  3. Reliability of Resting-State Microstate Features in Electroencephalography

    PubMed Central

    Khanna, Arjun; Pascual-Leone, Alvaro; Farzan, Faranak

    2014-01-01

    Background Electroencephalographic (EEG) microstate analysis is a method of identifying quasi-stable functional brain states (“microstates”) that are altered in a number of neuropsychiatric disorders, suggesting their potential use as biomarkers of neurophysiological health and disease. However, use of EEG microstates as neurophysiological biomarkers requires assessment of the test-retest reliability of microstate analysis. Methods We analyzed resting-state, eyes-closed, 30-channel EEG from 10 healthy subjects over 3 sessions spaced approximately 48 hours apart. We identified four microstate classes and calculated the average duration, frequency, and coverage fraction of these microstates. Using Cronbach's α and the standard error of measurement (SEM) as indicators of reliability, we examined: (1) the test-retest reliability of microstate features using a variety of different approaches; (2) the consistency between TAAHC and k-means clustering algorithms; and (3) whether microstate analysis can be reliably conducted with 19 and 8 electrodes. Results The approach of identifying a single set of “global” microstate maps showed the highest reliability (mean Cronbach's α>0.8, SEM ≈10% of mean values) compared to microstates derived by each session or each recording. There was notably low reliability in features calculated from maps extracted individually for each recording, suggesting that the analysis is most reliable when maps are held constant. Features were highly consistent across clustering methods (Cronbach's α>0.9). All features had high test-retest reliability with 19 and 8 electrodes. Conclusions High test-retest reliability and cross-method consistency of microstate features suggests their potential as biomarkers for assessment of the brain's neurophysiological health. PMID:25479614

  4. Reliability and validity of the Automatic Cognitive Assessment Delivery (ACAD).

    PubMed

    Di Rosa, Elisa; Hannigan, Caoimhe; Brennan, Sabina; Reilly, Richard; Rapčan, Viliam; Robertson, Ian H

    2014-01-01

    IN THIS STUDY WE EVALUATED RELIABILITY AND VALIDITY OF THE AUTOMATIC COGNITIVE ASSESSMENT DELIVERY (ACAD): a short computerized battery composed by memory and attention tests, delivered online, and designed primarily for the elderly. Reliability was examined with a test-retest design and validity was assessed by means of comparison with standard neuropsychological tests. Older (N = 32) and young adult participants (N = 21) were involved. We found that the ACAD is free from any practice effect. Test-retest reliability was confirmed via significant correlations and high percentage agreements between the scores of three repeated assessments. ACAD scores were lower for older than for young adult participants and correlated significantly with the standardized measures of memory and attention. Results demonstrate that the ACAD battery provides a reliable and valid measure of both immediate and delayed recognition memory and sustained attention, and may be useful for convenient and efficient cognitive assessment and monitoring in older adults.

  5. Determinants of reliability in psychiatric surveys of children aged 6-12.

    PubMed

    Fallon, T; Schwab-Stone, M

    1994-11-01

    The reliability of young children's self reports of psychiatric information is a concern of epidemiologists and clinicians alike. This paper explores the determinants of test-retest reliability in a sample of children from the general population using reliability coefficients constructed from a kappa statistic. Age, cognitive ability, and gender are related to consistency of reports in a test-retest paradigm. Controlling for age, cognitive ability and gender, children report more reliably on observable behaviors, and less reliably on questions involving unspecified time, reflections of one's own thoughts, and comparison of themselves with others. The reliability of reports of emotions lies between these two extremes. Surprisingly, sentence length of up to 40 words and psychiatric impairment of the child as measured by the Child Global Assessment Scale did not influence reliability. As might be expected, parents' reports of their children are more reliable than their children's reports.

  6. Reliability of short form-36 in an Internet- and a pen-and-paper version.

    PubMed

    Basnov, Maja; Kongsved, Sissel Marie; Bech, Per; Hjollund, Niels Henrik

    2009-01-01

    Use of Internet versions of questionnaires may have several advantages in clinical and epidemiological research, but we know little about if Internet versions differ with respect to validity and reliability. We aimed to compare Internet- and pen-and-paper versions of short form-36 (SF-36) with respect to test-retest reliability and internal consistency. Women referred to mammography (n = 782) were randomised to receive either a paper version with a prepaid return envelope or a guideline on how to fill in the Internet version. A subgroup was asked to answer the questionnaire once again in the alternative version. Test-retest reliability was assessed by the intra-class correlation coefficient. Internal consistency was calculated as Cronbach's alpha. The between-version test-retest reliability for the eight subscales were between 0.63 and 0.92. Cronbach's alpha for the two versions were all between 0.75 and 0.93 with minor differences between the Internet- and the pen-and-paper version. We found little or no evidence of a difference in test-retest reliability and internal consistency when we compared an Internet- and a pen-and-paper version of SF-36.

  7. Validity and Reliability of a Tool for Determining Appropriateness of Days of Stay: An Observational Study in the Orthopedic Intensive Rehabilitation Facilities in Italy

    PubMed Central

    Bianco, Aida; Flotta, Domenico; Lotito, Francesca; Nobile, Carmelo G. A.; Pileggi, Claudia; Pavia, Maria

    2012-01-01

    Objectives To test the validity and reliability of a tool specifically developed for the evaluation of appropriateness in rehabilitation facilities and to assess the prevalence of appropriateness of the days of stay. Methods The tool underwent a process of cross-cultural translation, content validity, and test-retest validity. Two hospital-based rehabilitation wards providing intensive rehabilitation care located in the Region of Calabria, Southern Italy, were randomly selected. A review of medical records on a random sample of patients aged 18 or more was performed. Results The process of validation resulted in modifying some of the criteria used for the evaluation of appropriateness. Test-retest reliability showed that the agreement and the k statistic for the assessment of the appropriateness of days of stay were 93.4% and 0.82, respectively. A total of 371 patient days was reviewed, and 22.9% of the days of stay in the sample were judged to be inappropriate. The most frequently selected appropriateness criterion was the evaluation of patients by rehabilitation professionals for at least 3 hours on the index day (40.8%); moreover, the most frequent primary reason accounting for the inappropriate days of stay was social and/or family environment issues (34.1%). Conclusions The findings showed that the tool used is reliable and have adequate validity to measure the extent of appropriateness of days of stay in rehabilitation facilities and that the prevalence of inappropriateness is contained in the investigated settings. Further research is needed to expand appropriateness evaluation to other rehabilitation settings, and to investigate more thoroughly internal and external causes of inappropriate use of rehabilitation services. PMID:23185588

  8. Tutorial on use of intraclass correlation coefficients for assessing intertest reliability and its application in functional near-infrared spectroscopy-based brain imaging

    NASA Astrophysics Data System (ADS)

    Li, Lin; Zeng, Li; Lin, Zi-Jing; Cazzell, Mary; Liu, Hanli

    2015-05-01

    Test-retest reliability of neuroimaging measurements is an important concern in the investigation of cognitive functions in the human brain. To date, intraclass correlation coefficients (ICCs), originally used in inter-rater reliability studies in behavioral sciences, have become commonly used metrics in reliability studies on neuroimaging and functional near-infrared spectroscopy (fNIRS). However, as there are six popular forms of ICC, the adequateness of the comprehensive understanding of ICCs will affect how one may appropriately select, use, and interpret ICCs toward a reliability study. We first offer a brief review and tutorial on the statistical rationale of ICCs, including their underlying analysis of variance models and technical definitions, in the context of assessment on intertest reliability. Second, we provide general guidelines on the selection and interpretation of ICCs. Third, we illustrate the proposed approach by using an actual research study to assess intertest reliability of fNIRS-based, volumetric diffuse optical tomography of brain activities stimulated by a risk decision-making protocol. Last, special issues that may arise in reliability assessment using ICCs are discussed and solutions are suggested.

  9. Reliability of Arrest and Incarceration Questions on the Risk Behavior Assessment

    ERIC Educational Resources Information Center

    Fisher, Dennis G.; Reynolds, Grace L.; Wood, Michele M.; Johnson, Mark E.

    2004-01-01

    We examined 48-hour test-retest reliability of the arrest and incarceration questions on the Risk Behavior Assessment (RBA; National Institute on Drug Abuse, 1993). Participants were 229 street-drug users recruited in 11 cities throughout the United States. Results revealed that lifetime arrest and incarceration items demonstrated good to…

  10. The Between Teacher Reliability of the Ekwall Reading Inventory and the Classroom Reading Inventory.

    ERIC Educational Resources Information Center

    Christine, Charles T.; And Others

    Using a test-retest research design, a study examined the reliability of the Classroom Reading Inventory (CRI) and the Ekwall Reading Inventory (ERI). Independent variables of test administrator to subject, test administrator to test, subject to test, and test order were randomized. Subjects included 31 children aged 7 through 12 years. The four…

  11. Reliability and Clinical Significance of Mobility and Balance Assessments in Multiple Sclerosis

    ERIC Educational Resources Information Center

    Learmonth, Yvonne C.; Paul, Lorna; McFadyen, Angus K.; Mattison, Paul; Miller, Linda

    2012-01-01

    The aim of the study was to establish the test-retest reliability, clinical significance and precision of four mobility and balance measures--the Timed 25-Foot Walk, Six-minute Walk, Timed Up and Go and the Berg Balance Scale--in individuals moderately affected by multiple sclerosis. Twenty four participants with multiple sclerosis (Extended…

  12. Factor Structure, Reliability and Validity of the Taiwanese Version of the Multidimensional Anxiety Scale for Children

    ERIC Educational Resources Information Center

    Yen, Cheng-Fang; Yang, Pinchen; Wu, Yu-Yu; Hsu, Fan-Ching; Cheng, Chung-Ping

    2010-01-01

    The aims of this study were to examine the factor structure, internal consistency 1 month test-retest reliability and the discriminant validity for the diagnosis of anxiety disorder of the Taiwanese version of the Multidimensional Anxiety Scale for Children (MASC-T). A total of 12,536 Taiwanese children and adolescents in the community were…

  13. Piagetian Formal Operational Tasks: A Crossover Study of Learning Effect and Reliability

    ERIC Educational Resources Information Center

    Lawson, Anton E.; And Others

    1974-01-01

    The general purposes of this study were to analyze responses on five Piagetian formal operational tasks in a test-retest situation to determine the extent to which taking a pretest effected scores on posttests and to determine task and examiner reliabilities. Significant test score gains on Piagetian tasks appeared to result from test-retest…

  14. Reliability and Validity of a New Physical Activity Self-Report Measure for Younger Children

    ERIC Educational Resources Information Center

    Belton, Sarahjane; Mac Donncha, Ciaran

    2010-01-01

    The purpose of this study was to assess the test-retest reliability and validity of a new Youth Physical Activity Self-Report measure. Heart rate and direct observation were employed as criterion measures with a sample of 79 children (aged 7-9 years). Spearman's rho correlation between self reported activity intensity and heart rate was 0.87 for…

  15. Substance Dependence Severity Scale: reliability and validity for ICD-10 substance use disorders.

    PubMed

    Miele, G M; Carpenter, K M; Cockerham, M S; Trautman, K D; Blaine, J; Hasin, D S

    2001-01-01

    The Substance Dependence Severity Scale (SDSS) is a semistructured interview that assesses the severity of the DSM-IV diagnoses of dependence and abuse and the ICD-10 diagnoses of substance dependence and harmful use across a wide range of substances. Previous research has demonstrated that the SDSS' DSM-IV dependence scales are reliable and valid indicators of diagnostic severity. However, the ICD-10 scales have not been psychometrically tested. This study investigated the test-retest reliability, internal consistency, diagnostic concordance, and concurrent validity of the SDSS' ICD-10 dependence and harmful use scales in 180 (112 male and 68 female) treated substance users. Test-retest reliabilities for the ICD-10 dependence scales ranged from good to excellent for alcohol, cocaine, heroin, and cannabis. Test-retest reliabilities for the SDSS' ICD-10 harmful use scales were in the good range for alcohol, cocaine, and heroin and the poor to fair range for cannabis. Internal consistency, diagnostic concordance, and concurrent validity results were comparable to the test-retest findings. These results support the use of the SDSS for assessing the severity of the ICD-10 dependence and harmful use diagnoses.

  16. Validity and Reliability of the Behavioral and Emotional Rating Scale (2nd Edition): Youth Rating Scale

    ERIC Educational Resources Information Center

    Epstein, Michael H.; Mooney, Paul; Ryser, Gail; Pierce, Corey D.

    2004-01-01

    Objective: This article reports findings of three studies addressing convergent validity and test-retest reliability of the Youth Rating Scale of the Behavioral and Emotional Rating Scale-Second Edition (BERS-2). Method: Pearson product-moment correlations were used in all three studies, the first two addressing convergent validity and the third…

  17. Reliability and Validity of the Flemish Physical Activity Computerized Questionnaire in Adults

    ERIC Educational Resources Information Center

    Matton, Lynn; Wijndaele, Katrien; Duvigneaud, Nathalie; Duquet, William; Philippaerts, Renaat; Thomis, Martine; Lefevre, Johan

    2007-01-01

    The purpose of this study was to investigate the test-retest reliability and concurrent validity of the Flemish Physical Activity Computerized Questionnaire (FPACQ) in employed/unemployed and retired people. The FPACQ was developed to assess detailed information on several dimensions of physical activity and sedentary behavior over a usual week. A…

  18. Reliability and validity of the California Verbal Learning Test (CVLT) -II - Japanese version.

    PubMed

    Sumiyoshi, Tomiki; Toyomaki, Atsuhito; Kawano, Naoko; Tomoko, Kitajima; Kusumi, Ichiro; Ozaki, Norio; Iwata, Nakao; Nakagome, Kazuyuki

    2017-03-20

    In line with the recent initiative to establish a standard measure of cognitive decline in bipolar disorder(1,2)) , the present study tested the criterion-related validity and test-retest reliability of the California Verbal Learning Test (CVLT)-II(3)()) Japanese version.(4)).

  19. Reliability and Validity of the Math Essential Skill Screener Elementary Version (MESS-E).

    ERIC Educational Resources Information Center

    Erford, Bradley T.; Bagley, Donna L.; Hopper, James A.; Lee, Ramona M.; Panagopulos, Kathleen A.; Preller, Denise B.

    1998-01-01

    The Math Essential Skill Screener Elementary Version (MESS-E) is a screener devised to identify primary grade students at risk for math difficulties. Item analysis, interitem consistency, test-retest reliability, decision efficiency, and construct validity of the MESS-E were studied using four independent samples of boys and girls grades 1-3. The…

  20. The Reading Essential Skills Screener-Elementary Version (RESS-E): Studies of Reliability and Validity

    ERIC Educational Resources Information Center

    Erford, Bradley T.; Stephens, Vicki M.

    2005-01-01

    Technical characteristics of the Reading Essential Skills Screener-Elementary Version (RESS-E; B. T. Erford, G. Vitali, R. Haas, & R. R. Boykin, 1995) were studied using 4 independent samples of boys and girls between the ages of 6 and 8 years. Evidence of internal consistency, test-retest reliability, decision efficiency, factorial validity,…

  1. Feasibility and Reliability of Two Different Walking Tests in People with Severe Intellectual and Sensory Disabilities

    ERIC Educational Resources Information Center

    Waninge, A.; Evenhuis, I. J.; van Wijck, R.; van der Schans, C. P.

    2011-01-01

    Background: The purpose of this study is to describe feasibility and test-retest reliability of the six-minute walking distance test (6MWD) and an adapted shuttle run test (aSRT) in persons with severe intellectual and sensory (multiple) disabilities. Materials and Methods: Forty-seven persons with severe multiple disabilities, with Gross Motor…

  2. Reliability of a Measure of Muscle Extensibility in Fullterm and Preterm Newborns

    ERIC Educational Resources Information Center

    Beuttler, Marybeth Grant; Leininger, Peter M.; Palisano, Robert J.

    2004-01-01

    Purpose: The purpose of this study was to examine the test-retest and inter-rater reliability of a measure of muscle extensibility developed by Tardieu, de la Tour, Bret, and Tardieu (1982) in fullterm and preterm newborns. Method: Twenty-one fullterm infants and twenty preterm infants were examined by two physical therapists. Each physical…

  3. Fiabilité test retest et validité de construit de la version française de L'Échelle fonctionnelle des membres inférieurs (ÉFMI), partie II

    PubMed Central

    René, Frédéric; Casimiro, Lynn; Tremblay, Manon; Chea, Phanny; Létourneau, Liliane; Silva, Megan; Stockwell, Victoria; Bergeron, Louis-Philippe

    2011-01-01

    RÉSUMÉ Introduction : Le Lower Extremity Functional Scale a été traduit en français en 2006. La version canadienne-française se nomme l'Échelle fonctionnelle des membres inférieurs (ÉFMI). La validité de construit et la fiabilité test-retest de l'ÉFMI n'ont pas encore été examinées. But : Examiner la fiabilité test-retest, la consistance interne et la validité de construit de l'ÉFMI. Méthodologie : Trente-quatre participants ayant subi une chirurgie ou une blessure à un membre inférieur ont rempli un questionnaire démographique et complété l'ÉFMI lors d'une évaluation initiale alors qu'ils étaient hospitalisés. Ils ont à nouveau complété l'ÉFMI dans un intervalle de 72 heures après la première évaluation. Le coefficient de corrélation intra-classe (CCI) et le coefficient kappa ont été utilisés afin d'examiner la fiabilité de type test-retest de l'ÉFMI. Le coefficient alpha Cronbach a été calculé pour évaluer la consistance interne. L'analyse factorielle a été utilisée pour examiner la validité de construit afin de déterminer le nombre de dimensions et leur signification respective. Résultats : Le CCI s'élève à une valeur de 0,92 [0,88–0,96] (IC: 95%). Le résultat du test α-Cronbach est de 0,95 (0,91–0,99) IC à 95%. L'analyse factorielle révèle que tous les éléments de l'ÉFMI se logent sur une dimension principale. Conclusion : Les résultats montrent que la version canadienne-française de l'ÉFMI est un outil unidimensionnel qui offre une fiabilité test-retest et une consistance interne excellentes. PMID:22379266

  4. Evaluation of validity and reliability of the Persian version of the functional index of hand osteoarthritis.

    PubMed

    Kordi Yoosefinejad, Amin; Motealleh, Alireza; Babakhani, Mohammad

    2017-01-13

    The Functional index of hand osteoarthritis (FIHOA) is a commonly used patient-reported outcome questionnaire designed to measure function in patients with hand osteoarthritis. The objective of this study was to evaluate the validity and reliability of the Persian version of the FIHOA. The Persian-translated version of FIHOA was administered to 72 native Persian-speaking patients in Iran with hand osteoarthritis. Thirty-six of the patients completed the questionnaire on two occasions 1 week apart. The physical component of the SF-36 and a numerical rating scale were used to evaluate the construct validity of the Persian version of FIHOA. Internal consistency was high (Cronbach's alpha = 0.89). Test-retest reliability for the total score was excellent (weighted kappa = 0.89, 95% CI 0.79-0.94). A significant positive correlation between total FIHOA score and numerical rating scale (r = 0.70) and a significant negative correlation between total FIHOA score and the physical component scale of the SF-36 (r = -0.76) were observed. The Persian version of the FIHOA showed adequate validity and reliability to evaluate functional disability in Persian-speaking patients with hand osteoarthritis.

  5. Feasibility, Reliability and Validity of the Dutch Translation of the Anxiety, Depression and Mood Scale in Older Adults with Intellectual Disabilities

    ERIC Educational Resources Information Center

    Hermans, Heidi; Jelluma, Naftha; van der Pas, Femke H.; Evenhuis, Heleen M.

    2012-01-01

    Background: The informant-based Anxiety, Depression And Mood Scale was translated into Dutch and its feasibility, reliability and validity in older adults (aged greater than or equal to 50 years) with intellectual disabilities (ID) was studied. Method: Test-retest (n = 93) and interrater reliability (n = 83), and convergent (n = 202 and n = 787),…

  6. The Chinese version of the Child and Adolescent Scale of Environment (CASE-C): validity and reliability for children with disabilities in Taiwan.

    PubMed

    Kang, Lin-Ju; Yen, Chia-Feng; Bedell, Gary; Simeonsson, Rune J; Liou, Tsan-Hon; Chi, Wen-Chou; Liu, Shu-Wen; Liao, Hua-Fang; Hwang, Ai-Wen

    2015-03-01

    Measurement of children's participation and environmental factors is a key component of the assessment in the new Disability Evaluation System (DES) in Taiwan. The Child and Adolescent Scale of Environment (CASE) was translated into Traditional Chinese (CASE-C) and used for assessing environmental factors affecting the participation of children and youth with disabilities in the DES. The aim of this study was to validate the CASE-C. Participants were 614 children and youth aged 6.0-17.9 years with disabilities, with the largest condition group comprised of children with intellectual disability (61%). Internal structure, internal consistency, test-retest reliability, convergent validity, and discriminant (known group) validity were examined using exploratory factor analyses, Cronbach's α coefficient, intra-class correlation coefficients (ICC), correlation analyses, and univariate ANOVAs. A three-factor structure (Family/Community Resources, Assistance/Attitude Supports, and Physical Design Access) of the CASE-C was produced with 38% variance explained. The CASE-C had adequate internal consistency (Cronbach's α=.74-.86) and test-retest reliability (ICCs=.73-.90). Children and youth with disabilities who had higher levels of severity of impairment encountered more environmental barriers and those experiencing more environmental problems also had greater restrictions in participation. The CASE-C scores were found to distinguish children on the basis of disability condition and impairment severity, but not on the basis of age or sex. The CASE-C is valid for assessing environmental problems experienced by children and youth with disabilities in Taiwan.

  7. Reliability of the Advanced Psychodiagnostic Interpretation (API) scoring system for the Bender Gestalt.

    PubMed

    Aucone, E J; Raphael, A J; Golden, C J; Espe-Pfeifer, P; Seldon, J; Pospisil, T; Dornheim, L; Proctor-Weber, Z; Calabria, M

    1999-09-01

    This study assesses the interrater reliability of the revised Advanced Psychodiagnostic Interpretation (API) scoring system for the Bender Gestalt Test (BGT). The API scoring system identifies 207 possible distortions in a BGT protocol. Agreement across nine raters exceeded 90% for each of three clinical protocols. Kappa statistics indicated that the API system exhibited good interrater reliability. Further research is necessary in such areas as test-retest reliability and validity to further demonstrate the effectiveness of the procedure.

  8. Method Matters: Understanding Diagnostic Reliability in DSM-IV and DSM-5

    PubMed Central

    Chmielewski, Michael; Clark, Lee Anna; Bagby, R. Michael; Watson, David

    2015-01-01

    Diagnostic reliability is essential for the science and practice of psychology, in part because reliability is necessary for validity. Recently, the DSM-5 Field Trials documented lower diagnostic reliability than past field trials and the general research literature, resulting in substantial criticism of the DSM-5 diagnostic criteria. Rather than indicating specific problems with DSM-5, however, the Field Trials may have revealed long-standing diagnostic issues that have been hidden due to a reliance on audio/video-recordings for estimating reliability. We estimated the reliability of DSM-IV diagnoses using both the standard audio-recording method and the test-retest method used in the DSM-5 Field Trials, in which different clinicians conduct separate interviews. Psychiatric patients (N = 339) were diagnosed using the SCID-I/P; 218 were diagnosed a second time by an independent interviewer. Diagnostic reliability using the audio-recording method (N = 49) was “good” to “excellent” (M kappa = .80) and comparable to the DSM-IV Field Trials estimates. Reliability using the test-retest method (N = 218) was “poor” to “fair” (M kappa = .47) and similar to DSM-5 Field-Trials’ estimates. Despite low test-retest diagnostic reliability, self-reported symptoms were highly stable. Moreover, there was no association between change in self-report and change in diagnostic status. These results demonstrate the influence of method on estimates of diagnostic reliability. PMID:26098046

  9. Reliability and Responsiveness of the Movement Assessment Battery for Children--Second Edition Test in Children with Developmental Coordination Disorder

    ERIC Educational Resources Information Center

    Wuang, Yee-Pay; Su, Jui-Hsing; Su, Chwen-Yng

    2012-01-01

    Aim: To examine the internal consistency, test-retest reliability, and responsiveness of the Movement Assessment Battery for Children--Second Edition (MABC-2) Test for children with developmental coordination disorder (DCD). Method: One hundred and forty-four Taiwanese children with DCD aged 6 to 12 years (87 males, 57 females) were tested on…

  10. The Math Essential Skills Screener--Upper Elementary Version (MESS-U): Studies of Reliability and Validity

    ERIC Educational Resources Information Center

    Erford, Bradley T.; Biddison, Amanda R.

    2006-01-01

    The Math Essential Skills Screener--Upper Elementary Version (MESS-U) is part of a series of screening tests designed to help identify students ages 9-11 who are at risk for mathematics failure. Internal consistency, test-retest reliability, item analysis, decision efficiency, convergent validity and factorial validity of the MESS-U were studied…

  11. Reliability and Responsiveness of the Bruininks-Oseretsky Test of Motor Proficiency-Second Edition in Children with Intellectual Disability

    ERIC Educational Resources Information Center

    Wuang, Yee-Pay; Su, Chwen-Yng

    2009-01-01

    We examined the internal consistency, test-retest reliability, and the responsiveness of the Bruininks-Oseretsky Test of Motor Proficiency-Second Edition (BOT-2) for children with intellectual disabilities (ID). One hundred children with ID aged 4-12 years tested on 3 separate occasions: two baseline measurements with a 2-week interval before the…

  12. The Six-Minute Walk Test for Adults with Intellectual Disability: A Study of Validity and Reliability

    ERIC Educational Resources Information Center

    Nasuti, Gabriella; Stuart-Hill, Lynneth; Temple, Viviene A.

    2013-01-01

    Background: The Six-Minute Walk Test (6MWT) has been used with clinical and healthy populations to assess functional capacity and cardiovascular fitness. The aim of this study was to determine the test-retest reliability of a modified-6MWT as well as concurrent validity of walk distance with peak oxygen uptake (VO[subscript 2] peak). Method:…

  13. Validity and reliability of a new test for Turkish-speaking aphasic patients: Ege Aphasia Test.

    PubMed

    Calis, Funda Atamaz; On, Arzu Yagiz; Durmaz, Berrin

    2013-01-01

    Due to the fact that the phonetic, morphological and syntactic structures of the Turkish language differ significantly from other European languages, the translated forms of the currently available aphasia assessment batteries are not adequate for Turkish-speaking aphasic patients. The aim of this study was to assess the validity and reliability of the Ege Aphasia Test that we have developed. The test, which includes the 8 subtests of praxia, spontaneous language, auditory and verbal comprehension, repetition, naming, reading, writing and calculating, was applied into 100 aphasic patients, 40 dysarthric patients and 40 healthy subjects. All test-retest intra-class correlation coefficients were found to be excellent (ICC = 0.99). The Cronbach's coefficients ranged from 0.71 to 0.91. All the subtests showed significantly greater scores in aphasic patients (p < 0.05). Significant correlations were found between the subtests and corrected total score (p < 0.05). Finally, the Ege Aphasia Test has an acceptable validity and reliability. It seems to be a promising battery for evaluation of aphasia in the Turkish language, which is spoken mainly in Turkey and in the surrounding regions. We believe that this study will pioneer the development of aphasia rehabilitation in these countries and contribute to future studies.

  14. The reliability, validity, and accuracy of self-reported absenteeism from work: a meta-analysis.

    PubMed

    Johns, Gary; Miraglia, Mariella

    2015-01-01

    Because of a variety of access limitations, self-reported absenteeism from work is often employed in research concerning health, organizational behavior, and economics, and it is ubiquitous in large scale population surveys in these domains. Several well established cognitive and social-motivational biases suggest that self-reports of absence will exhibit convergent validity with records-based measures but that people will tend to underreport the behavior. We used meta-analysis to summarize the reliability, validity, and accuracy of absence self-reports. The results suggested that self-reports of absenteeism offer adequate test-retest reliability and that they exhibit reasonably good rank order convergence with organizational records. However, people have a decided tendency to underreport their absenteeism, although such underreporting has decreased over time. Also, self-reports were more accurate when sickness absence rather than absence for any reason was probed. It is concluded that self-reported absenteeism might serve as a valid measure in some correlational research designs. However, when accurate knowledge of absolute absenteeism levels is essential, the tendency to underreport could result in flawed policy decisions.

  15. Assessing spiritual growth and spiritual decline following a diagnosis of cancer: reliability and validity of the spiritual transformation scale.

    PubMed

    Cole, Brenda S; Hopkins, Clare M; Tisak, John; Steel, Jennifer L; Carr, Brian I

    2008-02-01

    This study assessed the factor structure, reliability, and validity of an instrument designed to assess spiritual transformations following a diagnosis of cancer-the Spiritual Transformation Scale (STS). The instrument was administering to 253 people diagnosed with cancer within the previous 2 years. Two underlying factors emerged (spiritual growth (SG) and spiritual decline (SD)) with adequate internal reliability (alpha = 0.98 and 0.86, respectively) and test-retest reliability (r = 0.85 and 0.73, respectively). Validity was supported by correlations between SG and the Positive and Negative Affect Scale (PANAS) Positive Affect Subscale (r = 0.23, p < 0.001), the Daily Spiritual Experiences Scale (r = 0.57, p < 0.001), and the Post-traumatic Growth Inventory (r = 0.68, p < 0.001). SD was associated with higher scores on the Center for Epidemiological Studies Depression scale (r = 0.38, p < 0.001) and PANAS-Negative Affect Subscale (r = 0.40, p < 0.001), and lower scores on the PANAS-Positive Affect Subscale (r = -0.23, p < 0.001), and the Daily Spiritual Experiences Scale (r = -0.30, p < 0.001). Hierarchical regression analyses indicated that the subscales uniquely predicted adjustment beyond related constructs (intrinsic religiousness, spiritual coping, and general post-traumatic growth). The results indicate that the STS is psychometrically sound, with SG predicting better, and SD predicting poorer, mental and spiritual well-being following a diagnosis of cancer.

  16. Eight-month test-retest agreement in morning salivary cortisol, self- and parent-rated anxiety in boys with an Autism Spectrum Disorder.

    PubMed

    Sharpley, Christopher F; Bitsika, Vicki; Agnew, Linda L; Andronicos, Nicholas M

    2015-11-01

    The agreement over time in morning salivary cortisol concentrations and also self- and parent-rated anxiety was investigated in a sample of 16 boys with an ASD. Cortisol and anxiety data were collected eight months apart. Results indicated that there were significant correlations between each pair of measures from the two occasions, suggesting that cortisol concentrations and anxiety did not vary much at all over that time, challenging the assumption that cortisol needs to be measured over multiple days to obtain reliable data from children with an ASD. Implications for research into the ways these children respond to chronic stressors are discussed.

  17. Macular Pigment Optical Density and Measures of Macular Function: Test-Retest Variability, Cross-Sectional Correlations, and Findings from the Zeaxanthin Pilot Study of Response to Supplementation (ZEASTRESS-Pilot)

    PubMed Central

    Iannaccone, Alessandro; Carboni, Giovannella; Forma, Gina; Mutolo, Maria Giulia; Jennings, Barbara J.

    2016-01-01

    We report on the short-term test-retest baseline variability in macular function tests in ZEASTRESS-Pilot participants (n = 18), on their cross-sectional correlation with macular pigment optical density (MPOD), and on the effects of four months (FUV4) of 20 mg/day zeaxanthin (ZX), followed by a four-month washout (FUV8; n = 24, age 50–81 years old). Outcomes included: MPOD at 0.5 and 2.0 deg eccentricity (MPOD-0.5 and -2.0); contrast sensitivity (CS); pattern-reversal electroretinogram (PERG) amplitude; dark-adapted 650 nm foveal cone sensitivity (DA650-FCS); and 500 mn parafoveal rod sensitivity (DA500-PFRS). All measures of macular function showed close test-retest correlation (Pearson’s r range: 0.744–0.946) and low coefficients of variation (CV range: 1.13%–4.00%). MPOD correlated in a complex fashion with macular function. Following supplementation, MPOD-0.5 and MPOD-2.0 increased at both FUV4 and FUV8 (p ≤ 0.0001 for all measures). Continued, delayed MPOD increase and a small, but significant (p = 0.012), CS increase was seen at FUV8 only in females. PERGs increased significantly at FUV4 (p = 0.0006), followed by a partial decline at FUV8. In conclusion, following ZX supplementation, MPOD increased significantly. There was no effect on DA-650 FCS or DA-500 PFRS. Both CS and PERG amplitudes increased following supplementation, but the effect varied between males and females. Additional studies appear warranted to confirm and characterize further these inter-gender differences. PMID:28231126

  18. Reliability of lower extremity muscle strength measurements with handheld dynamometry in stroke patients during the acute phase: a pilot reliability study

    PubMed Central

    Yen, Hsiao-Ching; Luh, Jer-Junn; Teng, Ting; Pan, Guan-Shuo; Chen, Wen-Shiang; Hsun, Chiang-Chang; Jeng, Jiann-Shing

    2017-01-01

    [Purpose] No literature has described a suitable method for measuring muscle strength in a supine position during acute phase after stroke. This study investigated the feasibility and reliability of using a commercial handheld dynamometer to measure the muscle strengths of the hip flexor, knee extensor, and dorsiflexor in the supine position with a modified method for patients at a stroke intensive care center within 7 days of stroke onset. [Subjects and Methods] Fifteen persons with acute stroke participated in this cross-sectional study. For each patient, the muscle strengths of the hip flexors, knee extensors, and dorsiflexors were measured twice by two testers on the same day. Each patient was re-tested at the same time of day one day later. Inter-rater and test-retest reliability were then determined by the intraclass correlation coefficients (ICCs). [Results] For the three muscle groups, the inter-rater reliability ICCs were all 0.99 and the test-retest reliability ICCs were greater than 0.85. The investigated method thus has good inter-rater reliability and high agreement between the test-retest measurements, with acceptable measurement errors. [Conclusion] The modified method using a handheld dynamometer to test the muscle strength of acute stroke patients is a feasible and reliable method for clinical use. PMID:28265165

  19. Reliability and validity of spinal coordination patterns during treadmill walking in persons with thoracic spine pain – a preliminary study

    PubMed Central

    2013-01-01

    Background Persons with low back pain fail to show the same transition as healthy individuals from in-phase to anti-phase rotation of the thorax and pelvis as walking speed increases. The purpose of this study was to determine if the relative phase of the thorax and pelvis during walking was a reliable (within day test-retest) and valid measure for persons with thoracic pain. Methods The time series motion of the spine over C7, T8 and sacrum were measured at five treadmill walking speeds (0.67, 0.89, 1.12, 1.34, 1.56 m/s) in 19 persons with thoracic spine pain and 19 healthy control subjects. After a 20 minute rest, all tests were repeated. The average relative phases of the transverse plane rotation between C7-T8, C7-sacrum and T8-sacrum during a one-minute walk were calculated. The standard error of measurement (SEM) and the intra-class correlation coefficient (ICC) were used to estimate test-retest reliability. Three-way repeated measures analyses of variance were performed to determine the influence of group, walking speed and session on the relative phases. Results The minimum transverse plane motion amplitudes, across all participants and speeds, for the C7-T8, C7-sacrum, and T8-sacrum were 2.9, 5.1 and 2.8 degrees, respectively. The C7-T8 relative phase changed little with speed. The C7-sacrum and T8-sacrum relative phases showed increases as subjects walked faster, but both groups had similar patterns of change. Only the C7-T8 relative phase at 0.67 and 0.89 m/s exhibited good reliability (ICC > 0.80, SEM 4.2-5.7, no significant time effects) for both groups. The C7-T8 and T8-sacrum relative phases demonstrated significant group by speed effects. Conclusions The C7-T8 relative phase showed reasonable reliability and some discrimination between groups, but changes in response to walking speed were small. The T8-sacrum relative phase showed some discriminative ability, but reliability was not adequate. PMID:24321275

  20. The Validity and Reliability of the Persian Version Test of Mobile Phone Dependency (TMD)

    PubMed Central

    Mohammadi, Mohammadreza; Alavi, Seyyed Salman; Farokhzad, Pegah; Jannatifard, Fereshteh; Mohammadi Kalhori, Soroush; Sepahbodi, Ghazal; Baba Reisi, Mohammad; Sajedi, Sanaz; Farshchi, Mojtaba; Khoda Karami, Rasul; Hatami Kasvaee, Vahid; Sepasi, Neda; Alavi, Samaneh Sadat

    2015-01-01

    Objective: ‎‏ ‏Despite the fact that ‎the mobile phone has become a ‎pervasive technology of our time, ‎little research has been done on ‎mobile dependency. A valid and ‎reliable assessment instrument ‎corresponding to the Persian ‎culture is essential. This study ‎aimed to describe the ‎construction and validation of the ‎Persian version of TMD (Test of ‎Mobile phone Dependency) to ‎assess the addictive use of ‎mobile phone.‎ Methods: This was a cross-‎sectional study, for which data ‎were collected from 350 students ‎who were studying at Tehran ‎universities. Sampling method ‎was quota sampling. The ‎participants anonymously ‎completed the demographic ‎questionnaire, and CPDQ as a ‎valid questionnaire and gold ‎standard. Finally, clinical ‎interview [based on DSM-IV-TR] ‎was performed. To analyze the ‎data, concurrent validity, factor ‎analysis, internal consistency ‎‎(Cronbachα), split half; test-retest ‎and ROC Curve by SPSS18 ‎Software were used.‎ Results: As a result of the ‎reliability analysis and factor ‎analysis by principal component ‎and Varimax rotation, three ‎factors (“salient”, “preoccupation” ‎and “Spend a lot of time and ‎money”) for both male and ‎female participants were ‎extracted. Internal consistency ‎‎(Cronbach's alpha) of the TMD ‎was .92 (Cronbach alpha of the ‎factors is .88, .82, and .84, ‎respectively). The test-retest ‎correlation of the TMD was ‎‎.56.The best cut off point for this ‎questionnaire (TMD) is 38.‎ Conclusion: The TMD proved to ‎have an acceptable internal ‎consistency with adequate factor ‎models to assess the extent of ‎problems caused by the "misuse" ‎of the mobile phone in the ‎Iranian society. Therefore, it can ‎be concluded that the Persian ‎version of the test was reliable ‎and valid; however, further ‎analysis is needed.‎ PMID:27006671

  1. The long-term reliability of static and dynamic Quantitative Sensory Testing in healthy individuals.

    PubMed

    Marcuzzi, Anna; Wrigley, Paul J; Dean, Catherine M; Adams, Roger; Hush, Julia M

    2017-03-21

    Quantitative sensory tests (QST) have been increasingly used to investigate alterations in somatosensory function in a wide range of painful conditions. The interpretation of these findings is based on the assumption that the measures are stable and reproducible. To date, reliability of QST has been investigated for short test-retest intervals. The aim of this study was to investigate the long-term reliability of a multimodal QST assessment in healthy people, with testing conducted on three occasions over 4-months. Forty-two healthy people were enrolled in the study. Static and dynamic tests were performed, including cold and heat pain threshold (CPT, HPT), mechanical wind up (WUR), pressure pain threshold (PPT), two-point discrimination (TPD) and conditioned pain modulation (CPM). Systematic bias, relative reliability and agreement were analysed using repeated measure ANOVA, intraclass correlation coefficients (ICCs3,1) and standard error of the measurement (SEM), respectively. Static QST (CPT, HPT, PPT and TPD) showed good to excellent reliability (ICCs: 0.68 to 0.90). Dynamic QST (WUR and CPM) showed poor to good reliability (ICCs: 0.35 to 0.61). A significant linear decrease over time was observed for mechanical QST at the back (PPT and TPD) and for CPM (p<0.01). Static QST were stable over a period of 4 months; however, a small systematic decrease over time has been observed for mechanical QST. Dynamic QST showed considerable variability over time; in particular, CPM using PPT as the test stimulus did not show adequate reliability, suggesting that this test paradigm may be less useful for monitoring individuals over time.

  2. General inattentiveness is a long-term reliable trait independently predictive of psychological health: Danish validation studies of the Mindful Attention Awareness Scale.

    PubMed

    Jensen, Christian Gaden; Niclasen, Janni; Vangkilde, Signe Allerup; Petersen, Anders; Hasselbalch, Steen Gregers

    2016-05-01

    The Mindful Attention Awareness Scale (MAAS) measures perceived degree of inattentiveness in different contexts and is often used as a reversed indicator of mindfulness. MAAS is hypothesized to reflect a psychological trait or disposition when used outside attentional training contexts, but the long-term test-retest reliability of MAAS scores is virtually untested. It is unknown whether MAAS predicts psychological health after controlling for standardized socioeconomic status classifications. First, MAAS translated to Danish was validated psychometrically within a randomly invited healthy adult community sample (N = 490). Factor analysis confirmed that MAAS scores quantified a unifactorial construct of excellent composite reliability and consistent convergent validity. Structural equation modeling revealed that MAAS scores contributed independently to predicting psychological distress and mental health, after controlling for age, gender, income, socioeconomic occupational class, stressful life events, and social desirability (β = 0.32-.42, ps < .001). Second, MAAS scores showed satisfactory short-term test-retest reliability in 100 retested healthy university students. Finally, MAAS sample mean scores as well as individuals' scores demonstrated satisfactory test-retest reliability across a 6 months interval in the adult community (retested N = 407), intraclass correlations ≥ .74. MAAS scores displayed significantly stronger long-term test-retest reliability than scores measuring psychological distress (z = 2.78, p = .005). Test-retest reliability estimates did not differ within demographic and socioeconomic strata. Scores on the Danish MAAS were psychometrically validated in healthy adults. MAAS's inattentiveness scores reflected a unidimensional construct, long-term reliable disposition, and a factor of independent significance for predicting psychological health. (PsycINFO Database Record

  3. The Japanese version of the Barratt Impulsiveness Scale, 11th version (BIS-11): its reliability and validity.

    PubMed

    Someya, T; Sakado, K; Seki, T; Kojima, M; Reist, C; Tang, S W; Takahashi, S

    2001-04-01

    No instrument for assessing impulsiveness has been developed in Japan. After translating the Barratt Impulsiveness Scale 11th version (BIS-11) into Japanese, we investigated reliability and validity in student (n = 34) and worker (n = 416) samples. To assess test-retest reliability, the intraclass coefficient between test and retest was calculated in the student sample. Internal consistency was examined by calculating Cronbach's alpha in the worker sample. To see factor validity, we examined by confirmatory factor analysis whether the three-factor model, proposed by a previous report, fit the data. The results showed that the Japanese version of the BIS-11 had excellent test-retest reliability and acceptable internal consistency reliability. In addition, the Japanese version was judged to have similar factor structure to the original one. The Japanese version of the BIS-11 is a reliable and valid measure and has possible utility for assessing impulsiveness.

  4. Reliability of the Ego-Grasping Scale.

    PubMed

    Lester, David

    2012-04-01

    Research using Knoblauch and Falconer's Ego-Grasping Scale is reviewed. Using a sample of 695 undergraduate students, the scale had moderate reliability (Cronbach alpha, odd-even numbered items, and test-retest), but a principal-components analysis with a varimax rotation identified five components, indicating heterogeneity in the content of the items. Lower Ego-Grasping scores appear to be associated with better psychological health. The scale has been translated and used with Korean, Kuwaiti, and Turkish students, indicating that the scale can be useful in cross-cultural studies.

  5. Reliability, Validity, and Sensitivity to Change of Turkish Activities-Specific Balance Confidence Scale in Patients with Unilateral Peripheral Vestibular Disease

    ERIC Educational Resources Information Center

    Karapolat, Hale; Eyigor, Sibel; Kirazli, Yesim; Celebisoy, Nese; Bilgen, Cem; Kirazli, Tayfun

    2010-01-01

    The aim of this study is to evaluate the internal consistency, test-retest reliability, construct validity, and sensitivity to change of the Activities-specific Balance Confidence Scale (ABC) in people with peripheral vestibular disorder. Thirty-three patients with unilateral peripheral vestibular disease were included in the study. Patients were…

  6. Reliability of the Norwegian Version of the Children's Assessment of Participation and Enjoyment (CAPE) and Preferences for Activities of Children (PAC)

    ERIC Educational Resources Information Center

    Nordtorp, Heidi L.; Nyquist, Astrid; Jahnsen, Reidun; Moser, Thomas; Strand, Liv Inger

    2013-01-01

    This study examined test-retest reliability of the Norwegian version of Children's Assessment of Participation and Enjoyment (CAPE), and Preferences for Activities of Children (PAC) in children with and without disabilities. Totally 141 children, 107 typically developing, mean age 11.1, and 34 with disabilities, mean age 14.2 years participated. A…

  7. Reliability of a Shuttle Run Test for Children with Cerebral Palsy Who Are Classified at Gross Motor Function Classification System Level III

    ERIC Educational Resources Information Center

    Verschuren, Olaf; Bosma, Liesbeth; Takken, Tim

    2011-01-01

    For children and adolescents with cerebral palsy (CP) classified as Gross Motor Function Classification System (GMFCS) level III there is no running-based field test available to assess their cardiorespiratory fitness. The current study investigated whether a shuttle run test can be reliably (test-retest) performed in a group of children with…

  8. Reliability and validity of the 6-minute arm test for the evaluation of cardiovascular fitness in individuals with spinal cord injury

    PubMed Central

    Hol, Adrienne T; Eng, Janice J; Miller, William C; Sproule, Shannon; Krassioukov, Andrei V

    2011-01-01

    Objectives (1) To design a submaximal arm ergometry test (6-minute arm test [6-MAT]), for individuals with spinal cord injury (SCI) and (2) to determine the test-retest reliability and concurrent validity of this test. Design Prospective, exploratory, methodological study. To determine test-retest reliability, subjects completed the 6-MAT on 2 days, separated by 1 week. Validity was determined by comparing 6-MAT results with VO2peak. Setting Tertiary rehabilitation center. Participants 30 subjects with SCI (mean age=36.3 years; 83% male). Intervention Not applicable. Main Outcome Measures Subjects were evaluated on the 6-MAT and a VO2peak test. Results All subjects were able to complete the 6-MAT. Test-retest reliability of steady state VO2 and heart rate (HR) during the 6-MAT were excellent; intraclass correlation coefficient (ICC)=0.81 [95% confidence interval (CI)=0.58–0.92], and 0.90 (95%CI=0.75–0.96), respectively. The correlation between VO2peak and 6-MAT VO2 was excellent (r=0.92), while those between VO2peak and 6-MAT HR (r=0.63) and VO2peak and 6-MAT power output (PO) (r=0.73) were good. Conclusions This study demonstrated that the 6-MAT has acceptable values for test-retest reliability and validity. The 6-MAT should be further tested for responsiveness to enhance its use as a clinical tool. PMID:17398251

  9. The Shedler-Westen Assessment Procedure (SWAP): Evaluating Psychometric Questions about Its Reliability, Validity, and Impact of Its Fixed Score Distribution

    ERIC Educational Resources Information Center

    Blagov, Pavel S.; Bi, Wu; Shedler, Jonathan; Westen, Drew

    2012-01-01

    The Shedler-Westen Assessment Procedure (SWAP) is a personality assessment instrument designed for use by expert clinical assessors. Critics have raised questions about its psychometrics, most notably its validity across observers and situations, the impact of its fixed score distribution on research findings, and its test-retest reliability. We…

  10. A Review and Comparison of the Reliabilities of the MMPI-2, MCMI-III, and PAI Presented in Their Respective Test Manuals

    ERIC Educational Resources Information Center

    Wise, Edward A.; Streiner, David L.; Walfish, Steven

    2010-01-01

    This article provides a review of the literature to determine the most frequently used personality tests. Based on this review, internal consistency and test-retest reliability coefficients from the test manuals for the Minnesota Multiphasic Personality Inventory-2 (MMPI-2), Millon Clinical Multiaxial Inventory-III (MCMI-III), and Personality…

  11. Additional Evidence for the Reliability and Validity of the Student Risk Screening Scale at the High School Level: A Replication and Extension

    ERIC Educational Resources Information Center

    Lane, Kathleen Lynne; Oakes, Wendy P.; Ennis, Robin Parks; Cox, Meredith Lucille; Schatschneider, Christopher; Lambert, Warren

    2013-01-01

    This study reports findings from a validation study of the Student Risk Screening Scale for use with 9th- through 12th-grade students (N = 1854) attending a rural fringe school. Results indicated high internal consistency, test-retest stability, and inter-rater reliability. Predictive validity was established across two academic years, with Spring…

  12. Validity and reliability evidence of the TOCA-C in a sample of Greek students.

    PubMed

    Kourkounasiou, Maria A; Skordilis, Emmanouil K

    2014-12-01

    Validity and reliability evidence of the Teacher Observation of Classroom Adaptation-Checklist (TOCA-C) was examined in 186 Greek students through exploratory factor analysis, divergent and concurrent validity, internal consistency, and test-retest reliability. The TOCA-C showed a high internal consistency for the three factors of Concentration Problems, Disruptive/Aggressive Behaviour, and Prosocial Behaviour (αs = .89-.96), and acceptable two-week test-retest reliability. The three-factor solution explained 74.50% of the total variance. Regarding divergent validity, a significant Sex × Disability interaction was evident for Disruptive Behaviour, with women scoring higher in 'special' and lower in 'general' schools compared to men. Main effects were significant across disability, but not across sex. Correlations with the Strengths and Difficulties Questionnaire suggested convergent and divergent validity evidence. The TOCA-C should be useful in testing Greek students with and without disabilities.

  13. Reliability of primary caregivers reports on lifestyle behaviours of European pre-school children: the ToyBox-study.

    PubMed

    González-Gil, E M; Mouratidou, T; Cardon, G; Androutsos, O; De Bourdeaudhuij, I; Góźdź, M; Usheva, N; Birnbaum, J; Manios, Y; Moreno, L A

    2014-08-01

    Reliable assessments of health-related behaviours are necessary for accurate evaluation on the efficiency of public health interventions. The aim of the current study was to examine the reliability of a self-administered primary caregivers questionnaire (PCQ) used in the ToyBox-intervention. The questionnaire consisted of six sections addressing sociodemographic and perinatal factors, water and beverages consumption, physical activity, snacking and sedentary behaviours. Parents/caregivers from six countries (Belgium, Bulgaria, Germany, Greece, Poland and Spain) were asked to complete the questionnaire twice within a 2-week interval. A total of 93 questionnaires were collected. Test-retest reliability was assessed using intra-class correlation coefficient (ICC). Reliability of the six questionnaire sections was assessed. A stronger agreement was observed in the questions addressing sociodemographic and perinatal factors as opposed to questions addressing behaviours. Findings showed that 92% of the ToyBox PCQ had a moderate-to-excellent test-retest reliability (defined as ICC values from 0.41 to 1) and less than 8% poor test-retest reliability (ICC < 0.40). Out of the total ICC values, 67% showed good-to-excellent reliability (ICC from 0.61 to 1). We conclude that the PCQ is a reliable tool to assess sociodemographic characteristics, perinatal factors and lifestyle behaviours of pre-school children and their families participating in the ToyBox-intervention.

  14. Extended characterisation of the serotonin 2A (5-HT2A) receptor-selective PET radiotracer 11C-MDL100907 in humans: quantitative analysis, test-retest reproducibility, and vulnerability to endogenous 5-HT tone

    PubMed Central

    Talbot, Peter S.; Slifstein, Mark; Hwang, Dah-Ren; Huang, Yiyun; Scher, Erica; Abi-Dargham, Anissa; Laruelle, Marc

    2011-01-01

    Introduction scanning properties and analytic methodology of the 5-HT2A receptor-selective positron emission tomography (PET) tracer 11C-MDL100907 have been partially characterised in previous reports. We present an extended characterisation in healthy human subjects. Methods 64 11C-MDL100907 PET scans with metabolite-corrected arterial input function were performed in 39 healthy adults (18–55 yr). 12 subjects were scanned twice (duration 150 min) to provide data on plasma analysis, model order estimation, and stability and test-retest characteristics of outcome measures. All other scans were 90 min duration. 3 subjects completed scanning at baseline and following 5-HT2A receptor antagonist medication (risperidone or ciproheptadine) to provide definitive data on the suitability of the cerebellum as reference region. 10 subjects were scanned under reduced 5-HT and control conditions using rapid tryptophan depletion to investigate vulnerability to competition with endogenous 5-HT. 13 subjects were scanned as controls in clinical protocols. Pooled data were used to analyze the relationship between tracer injected mass and receptor occupancy, and age-related decline in 5-HT2A receptors. Results optimum analytic method was a 2-tissue compartment model with arterial input function. However, basis function implementation of SRTM may be suitable for measuring between-group differences non-invasively and warrants further investigation. Scan duration of 90 minutes achieved stable outcome measures in all cortical regions except orbitofrontal which required 120 minutes. Binding potential (BPP and BPND) test-retest variability was very good (7–11%) in neocortical regions other than orbitofrontal, and moderately good (14–20%) in orbitofrontal cortex and medial temporal lobe. Saturation occupancy of 5-HT2A receptors by risperidone validates the use of the cerebellum as a region devoid of specific binding for the purposes of PET. We advocate a mass limit of 4.6 µg to remain

  15. A confirmatory study of the Combined Index of Severity of Fibromyalgia (ICAF*): factorial structure, reliability and sensitivity to change

    PubMed Central

    2011-01-01

    Background Fibromyalgia (FM) is a complex syndrome that affects many aspects of the patients life and it is very difficult to evaluate in clinical practice. A recent study has developed the Combined Index of Severity of Fibromyalgia (ICAF), an instrument that evaluates diverse aspects of FM and offers five indices: emotional, physical, active coping, passive coping and total. The objective of this study is to confirm the structure of the ICAF, check its test-retest reliability, assess its sensitivity to change, and compare the results obtained in a sample of patients with fibromyalgia with another sample of healthy controls. Methods A total of 232 patients took part in the study, 228 women and 4 men, with a mean age of 47.73 years of age (SD = 8.61) and a time of disease evolution since diagnosis of 4.28 years (SD = 4.03). The patients from the FM group completed the ICAF. Between one and two weeks later, they again attended the clinic and complete the 59 items on the ICAF (retest) and immediately afterwards they began treatment (according to daily clinical practice criteria). A sample of healthy subjects was also studied as a control group: 110 people were included (106 women and 4 men) with a mean age of 46.01 years of age (SD = 9.35). The study was conducted in Spain. Results The results obtained suggest that the four-factor model obtained in the previous study adequately fits the data obtained in this study. The test-retest reliability and internal consistency were all significant and show a high degree of correlation for all the factors as well as in overall score. With the exception of the passive coping factor, all the other scores, including the overall score, were sensitive to change after the therapeutic intervention. The ICAF scores of the patients with fibromyalgia compared with those of the control group were markedly different. Conclusions The findings suggest that the ICAF is a valid, reliable, sensitive to change instrument with the added advantage

  16. Cross-Cultural Translation, Adaptation and Reliability of the Danish M. D. Andeson Dysphagia Inventory (MDADI) in Patients with Head and Neck Cancer.

    PubMed

    Hajdú, Sara Fredslund; Plaschke, Christina Caroline; Johansen, Christoffer; Dalton, Susanne Oksbjerg; Wessel, Irene

    2017-03-07

    The objectives were to translate and culturally adapt the M.D. Anderson Dysphagia Inventory (MDADI) into Danish and subsequently test the reliability of the Danish version. The MDADI was translated into Danish and cross culturally adapted through cognitive interviews. The final version was test-retest evaluated in a group of head and neck cancer (HNC) patients who responded to the questionnaire twice with a mean of eight days apart. Interclass correlation coefficient, Cronbach's alpha, floor and ceiling effects, standard error of measurement and minimal detectable change were investigated. Fourteen patients were interviewed on the comprehensibility of the Danish MDADI, and all found the questionnaire meaningful, easy to understand, non-offensive and to include relevant aspects of dysphagia related to HNC. Sixty-four patients were included in the test-retest study. Especially, one item in the emotional scale (E7) appeared to be often misinterpreted, and ceiling effects were found in all four subdomains (global, emotional, functional and physical). The four subdomains and the composite score showed acceptable test-retest reliability and internal consistency in a Danish population of HNC patients. The Danish MDADI is reliable in terms of internal consistency and test-retest reproducibility and can be used in assessing the health-related quality of life in head and neck cancer patients with dysphagia.

  17. The Nursing Assessment of Medication Acceptance: the reliability and validity of a schizophrenia medication adherence scale

    PubMed Central

    Hori, Hikaru; Ueda, Nobuhisa; Shiozuka, Hideki; Igata, Ryohei; Miki, Tazuko; Atake, Kiyokazu; Takeuchi, Yuji; Shirozu, Hiroaki; Ohara, Naotoshi; Konishi, Yuki; Nagai, Hiroshi; Sakurai, Noriaki; Kubota, Takanori; Yoshimura, Reiji

    2016-01-01

    Background: Many patients with schizophrenia have low medication adherence. There is, however, no objective assessment scale that can be used by nurses or caregiver specialists. The Nursing Assessment of Medication Acceptance (NAMA) was developed to assess patients’ medication adherence. The aim of this study was to examine the validity and reliability of the NAMA in patients with schizophrenia. Methods: A total of 121 Japanese patients with schizophrenia were enrolled. All patients underwent evaluation using the NAMA and the Drug Attitude Inventory (DAI-10). Reliability was investigated using a test-retest method and a parallel-test method. To determine the test-retest reliability of the NAMA, we tested 101 schizophrenia patients twice, with the second assessment 2–4 weeks after the date of the first assessment. For validity verification, standard-related validity and the degree of concordance with the DAI-10 scores were measured. Results: The Cronbach’s alpha value of the NAMA in schizophrenia was 0.88. The test-retest correlation coefficients were all between 0.53–0.74. The total scores and all subscores for the NAMA were significantly correlated, and the NAMA total scores were significantly correlated with the DAI-10 total scores. Conclusions: The NAMA shows good reliability and validity in measuring medication adherence in schizophrenia. PMID:28101319

  18. Reliability and validity of the Korean version of the internet addiction test among college students.

    PubMed

    Lee, Kounseok; Lee, Hye-Kyung; Gyeong, Hyunsu; Yu, Byeongkwan; Song, Yul-Mai; Kim, Daeho

    2013-05-01

    We developed a Korean translation of the Internet Addiction Test (KIAT), widely used self-report for internet addiction and tested its reliability and validity in a sample of college students. Two hundred seventy-nine college students at a national university completed the KIAT. Internal consistency and two week test-retest reliability were calculated from the data, and principal component factor analysis was conducted. Participants also completed the Internet Addiction Diagnostic Questionnaire (IADQ), the Korea Internet addiction scale (K-scale), and the Patient Health Questionnaire-9 for the criterion validity. Cronbach's alpha of the whole scale was 0.91, and test-retest reliability was also good (r = 0.73). The IADQ, the K-scale, and depressive symptoms were significantly correlated with the KIAT scores, demonstrating concurrent and convergent validity. The factor analysis extracted four factors (Excessive use, Dependence, Withdrawal, and Avoidance of reality) that accounted for 59% of total variance. The KIAT has outstanding internal consistency and high test-retest reliability. Also, the factor structure and validity data show that the KIAT is comparable to the original version. Thus, the KIAT is a psychometrically sound tool for assessing internet addiction in the Korean-speaking population.

  19. Reliability and validity of a self-report of hand function in persons with rheumatoid arthritis.

    PubMed

    Poole, Janet L; Cordova, Kenneth J; Brower, Lisa M

    2006-01-01

    The purpose of this study was to examine the test-retest reliability and the concurrent validity of the Duruöz Hand Index (DHI) in persons with rheumatoid arthritis (RA). Forty participants with RA and no other major medical problems completed the DHI, a self-report of hand function, at two points in time to assess test-retest reliability. To determine concurrent validity, participants were also administered three performance-based tests, the Arthritis Hand Function Test (AHFT), the Hand Mobility in Scleroderma Test (HAMIS), and the Keitel Functional Test (KFT), and two self-report questionnaires of functional ability, the Health Assessment Questionnaire (HAQ) and the Scleroderma Functional Assessment Questionnaire (SFAQ). Test-retest reliability intraclass correlation coefficients for the DHI ranged from 0.83 to 0.90. Scores on the DHI were significantly correlated with scores on the AHFT (r(s)=0.36-0.54), the HAMIS (r(s)=0.39), the HAQ (r(s)=0.78), the HAMIS (r(s)=0.39), and the SFAQ (r(s)=0.85). Scores on the DHI did not correlate with KFT scores. The results from this study show the DHI to be a reliable and valid test for hand function in persons with RA.

  20. Factor structure, reliability, and validity of the Chinese version of the School Bullying Experience Questionnaire.

    PubMed

    Yen, Cheng-Fang; Kim, Young-Shin; Tang, Tze-Chun; Wu, Yu-Yu; Cheng, Chung-Ping

    2012-09-01

    The aims of this study were to examine the factor structure, internal consistency, 1-month test-retest reliability, and congruent validity of the Chinese version of the School Bullying Experience Questionnaire (C-SBEQ). Study 1, in which 5751 Taiwanese adolescents in Southern Taiwan participated, examined the adequacy of the original four-factor structure of the C-SBEQ using confirmatory factor analysis (CFA) and internal-consistency reliability using Cronbach α. Study 2, in which 108 adolescents in Southern Taiwan participated, examined the 1-month test-retest reliability using intraclass correlation coefficients (ICCs). We examined the congruent validity of the C-SBEQ by examining the consistency between self-reported and teacher- and classmate-nominated experiences of bullying involvement in Study 2. The results of CFA supported the four-factor structure of the C-SBEQ in Taiwanese adolescents. The test-retest and internal reliability values of all subscales of the C-SBEQ were at acceptable to satisfactory levels. Nominated adolescents had significantly higher self-reported scores on three C-SBEQ subscales than non-nominated ones, and the levels of agreement between self-reported and nominated victims were moderate. The results of this study indicate that the C-SBEQ is appropriate for assessing bullying experiences in Taiwanese adolescents.

  1. Reliability of utricular function testing sinusoidal translation profile during unilateral centrifugation.

    PubMed

    Buytaert, K I; Vanspauwen, R; Van de Heyning, P H; Wuyts, F L

    2010-01-01

    The unilateral centrifugation test is one of the few vestibular tests that evaluate the utricles side by side. During this test, a subject is rotated about an earth vertical axis at high rotation speeds (e.g. 400 degrees/s) and translated sideways along the interaural axis to align the axis of rotation consecutively with the right and the left utricle. The combined rotation and translation induces ocular counter rolling (OCR), which is measured using three-dimensional video-oculography. Recently, a new model has been proposed to analyse the OCR. The model is based on contributions from both the semicircular canals and the utricles. Concomitant with the new model a new stimulation profile using a sinusoidal translation profile during the unilateral centrifugation has been introduced [1]. The current study presents the test-retest reliability as well as the robustness of the new stimulation method, based on data of 67 healthy subjects. Test-retest reliability was based on repeated measurements of a group of subjects. To test the robustness of the new sinusoidal translation paradigm, we investigated the effect of a different amplitude of the sinusoidal translation (6 cm instead of 4 cm) and of an offset in translation (from -3 to +5 cm, instead of from -4 to +4 cm) on the parameters. Several statistical measures were used to reflect the reliability: intraclass correlation coefficient (ICC), the "coefficient of variation of the method error" and the "minimal difference" (MD). All relevant variables from the physiological model for the OCR induced by unilateral centrifugation show a good to excellent reliability during the test-retest study and the relevant parameters remain unaffected by the changes applied to the translation profile (p > 0.05) as predicted by the model. Additionally, all observed differences are smaller than the MD values calculated in the test-retest part of the study.

  2. Reliability and validity of the valued activity inventory for adults with cancer.

    PubMed

    Lyons, Kathleen Doyle; Hegel, Mark T; Hull, Jay G; Li, Zhongze; Balan, Stefan; Bartels, Stephen

    2012-01-01

    The authors assessed the psychometric properties of the Valued Activity Inventory for Adults With Cancer (VAI-AC), a self-report instrument that measures activity limitations. Participants included 50 older adults undergoing chemotherapy who completed the VAI-AC and measures of physical and mental function, symptom intensity, and mood 3 days before and the day of chemotherapy. Test-retest reliability was assessed by determining the average number of items for which the importance of an activity was rated consistently and by calculating the intraclass correlation coefficient (ICC) for the first and second VAI-AC scores. Convergent validity was assessed by correlating the VAI-AC scores with the other measures. Participants consistently rated the importance of 90% of the items. The 72-hour test-retest reliability ICC was 0.67. Participants with fewer activity limitations indicated better physical function (r = 0.58, p < .001), better mental function (r = 0.55, p < .001), lower symptom intensity (r = -0.57, p < .001), and fewer depressive symptoms (r = -0.68, p < .001). The VAI-AC demonstrated evidence of test-retest reliability and convergent validity in this convenience sample of older adults undergoing chemotherapy for cancer.

  3. PTA scale for children aged 4 to 7 years: Selecting developmentally valid and reliable items.

    PubMed

    Lah, Suncica; David, Pamela; Donohue, Hayley; Epps, Adrienne; Tate, Robyn; Brookes, Naomi

    2017-04-07

    The aim of this study was to select developmentally valid and reliable items for inclusion in criterion-referenced (pass > 90%) posttraumatic amnesia (PTA) scale for children aged 4 to 7 years in a prospective cohort study. Fifty-two typically developing children (26 male/26 female) aged 4 to 7 years were administered a set of 10 items (5 orientation, 5 memory) over 3-4 days. The total score obtained on the set of 10 items had poor developmental validity and test-retest reliability. Nevertheless, individual item analysis identified five items (three orientation and two memory items) that were consistently passed by >90% of the children on each day of testing. For these five items the total scores did not differ significantly either between age groups or between days of testing. Test-retest was extremely high (close to 1). The five items had excellent developmental validity and test-retest reliability. This study identified 5 (3 orientation and 2 memory) items that met our selection criterion and form a new PTA scale, the Sydney PTA scale (SYPTAS), for children aged 4 to 7 years.

  4. The importance of establishing reliability and validity of assessment instruments for mental health problems: An example from Somali children and adolescents living in three refugee camps in Ethiopia

    PubMed Central

    Hall, Brian J.; Puffer, Eve; Murray, Laura K.; Ismael, Abdulkadir; Bass, Judith K.; Sim, Amanda; Bolton, Paul A.

    2014-01-01

    Assessing mental health problems cross-culturally for children exposed to war and violence presents a number of unique challenges. One of the most important issues is the lack of validated symptom measures to assess these problems. The present study sought to evaluate the psychometric properties of two measures to assess mental health problems: the Achenbach Youth Self-Report and the Child Posttraumatic Stress Disorder Symptom Scale. We conducted a validity study in three refugee camps in Eastern Ethiopia in the outskirts of Jijiga, the capital of the Somali region. A total of 147 child and caregiver pairs were assessed, and scores obtained were submitted to rigorous psychometric evaluation. Excellent internal consistency reliability was obtained for symptom measures for children and their caregivers. Validation of study instruments based on local case definitions was obtained for the caregivers but not consistently for the children. Sensitivity and specificity of study measures were generally low, indicating that these scales would not perform adequately as screening instruments. Combined test-retest and inter-rater reliability was low for all scales. This study illustrates the need for validation and testing of existing measures cross-culturally. Methodological implications for future cross-cultural research studies in low- and middle-income countries are discussed. PMID:24955147

  5. The Personality Inventory for DSM-5 Brief Form: Evidence for Reliability and Construct Validity in a Sample of Community-Dwelling Italian Adolescents.

    PubMed

    Fossati, Andrea; Somma, Antonella; Borroni, Serena; Markon, Kristian E; Krueger, Robert F

    2015-12-16

    To assess the reliability and construct validity of the Personality Inventory for DSM-5 Brief Form (PID-5-BF) among adolescents, 877 Italian high school students were administered the PID-5-BF. Participants were administered also the Measure of Disordered Personality Functioning (MDPF) as a criterion measure. In the full sample, Cronbach's alpha values for the PID-5-BF scales ranged from .59 (Detachment) to .77 (Psychoticism); in addition, all PID-5-BF scales showed mean interitem correlation values in the .22 to .40 range. Cronbach's alpha values for the PID-5-BF total score was .83 (mean interitem r = .16). Although 2-month test-retest reliability could be assessed only in a small (n = 42) subsample of participants, all PID-5-BF scale scores showed adequate temporal stability, as indexed by intraclass r values ranging from .78 (Negative Affectivity) to .97 (Detachment), all ps <.001. Exploratory structural equation modeling analyses provided at least moderate support for the a priori model of PID-5-BF items. Multiple regression analyses showed that PID-5-BF scales predicted a nonnegligible amount of variance in MDPF Non-Cooperativeness, adjusted R(2) = .17, p < .001, and Non-Coping scales, adjusted R(2) = .32, p < .001. Similarly, the PID-5-BF total score was a significant predictor of both MDPF Non-Coping, and Non-Cooperativeness scales.

  6. The Structured Clinical Interview for Complicated Grief: Reliability, Validity, and Exploratory Factor Analysis

    PubMed Central

    Bui, Eric; Mauro, Christine; Robinaugh, Donald J.; Skritskaya, Natalia A.; Wang, Yuanjia; Gribbin, Colleen; Ghesquiere, Angela; Horenstein, Arielle; Duan, Naihua; Reynolds, Charles; Zisook, Sidney; Simon, Naomi M.; Shear, M. Katherine

    2015-01-01

    Background Complicated grief (CG) has been recently included in the DSM-5, under the term “Persistent Complex Bereavement Disorder”, as a condition requiring further study. To our knowledge, no psychometric data on any structured clinical interview of CG is available to date. In this manuscript, we introduce the Structured Clinical Interview for CG (SCI-CG) a 31-item “SCID-like” clinician-administered instrument to assess the presence of CG symptoms. Methods Participants were 281 treatment-seeking adults with CG (77.9% (n=219) women, mean age = 52.4, SD = 17.8) who were assessed with the SCI-CG and measures of depression, posttraumatic stress, anxiety, functional impairment. Results The SCI-CG exhibited satisfactory internal consistency (α = .78), good test-retest reliability (Inter-class correlation [ICC] 0.68, 95% CI [0.60, 0.75]), and excellent inter-rater reliability (ICC=0.95, 95% CI [0.89, 0.98]). Exploratory factor analyses revealed that a five-factor structure, explaining 50.3% of the total variance, was the best fit for the data. Conclusions The clinician-rated SCI-CG demonstrates good internal consistency, reliability, and convergent validity in treatment-seeking individuals with CG and therefore can be a useful tool to assess CG. Although diagnostic criteria for CG have yet to be adequately validated, the SCI-CG may facilitate this process. The SCI-CG can now be used as a validated instrument in research and clinical practice. PMID:26061724

  7. Reliability and validity of the hands-up survey in assessing commuting to school in New Zealand elementary school children.

    PubMed

    de Wit, Babet; Loman, Karen; Faithfull, Kara; Hinckson, Erica A

    2012-05-01

    The decrease in physical activity time in and out of school increases the need for active commuting. School travel plan programs have been used internationally to increase active commuting in elementary school children. However, little research has been conducted in the reliability and validity of travel survey instruments. The purpose of this study was to evaluate the test-retest reliability and validity of the Hands-Up survey to assess active commuting to school from a random sample of children within the Auckland region, New Zealand. Test-retest reliability and criterion validity of travel modes were determined in 118 elementary school children in the Auckland region. The survey tool consisted of one question on commuting to school. Test-retest reliability and validity were evaluated using kappa coefficients. The level of agreement between the children's responses (κ = .96, 95% confidence interval = 0.92-1.00) and between children's and parents' (κ = .91, 95% confidence interval = 0.85-0.98) were almost perfect. The Hands-Up survey is a valid and reliable tool to determine travel mode to school among elementary school children.

  8. Validity and reliability of the developmental assessment screening scale

    PubMed Central

    Singh, Ajay; Squires, Jane; Yeh, Chia Jung; Heo, Kay H.; Bian, Hui

    2016-01-01

    Objectives: To develop and validate the 6-year Ages and Stages Questionnaire (ASQ) for school-age children. Methods: Parents/caregivers of children 66–78 months were recruited from 6 countries and 15 states in the United States. Similar to other ASQ intervals, the 6-year ASQ has five developmental domains targeted for children from 66 months to 78 months of age. We assessed internal consistency reliability, test-retest reliability, the scale structure, validity (correlation coefficients), and utility of the 6-year ASQ. The 6-year ASQ screens development in five domains using 30 items. Results: Coefficient alpha measuring internal consistency was 0.97. Test-retest reliability was estimated by having parents complete two ASQ's on the same child within a week interval. Correlations between scores of the two ASQ's reflected stability of scores. Test-retest reliability results were robust with an intraclass correlation coefficient of 0.94. Factor analysis results resulted in a five factors structure. The Pearson correlations coefficients between the latent variables were moderate to large and statistically significant, P < 0.0001. The 6-year ASQ screens development in five domains using 30 items. The administration time varied from 10 to 60 min with a mean of 15.17 min. General utility result shows that the 6-year ASQ can be used with satisfaction by caregivers, pediatricians, professionals, and parents. Conclusions: Preliminary data on the 6-year ASQ reflected promising results. An easy-to-administer, accurate caregiver-completed screening tool may increase the frequency of screening for school-age children. PMID:27453856

  9. Beliefs in the Inheritance of Risk Factors for Suicide Scale: development, reliability, stability, and convergent and discriminant validity.

    PubMed

    Voracek, Martin; Loibl, Lisa Mariella; Sonneck, Gernot

    2007-08-01

    Findings from adoption, family, geographical, immigrant, molecular genetic, surname, and twin studies suggest genetic risk factors have a role in suicidal behavior. However, related mental health literacy (knowledge and beliefs) even of future health-care professionals who will be concerned with suicide lag behind this research progress. As no scale for assessing such beliefs is available, the 22-item Beliefs in the Inheritance of Risk Factors for Suicide Scale was constructed, its contents rated by experts in a validation survey and administered to samples of 70 medical and 165 psychology students. Medical students held stronger beliefs in the genetics of suicide than psychology students. Internal scale consistency and test-retest reliability were assessed as adequate. Factor analysis of the 22 items yielded a dominant first factor. Scores were positively related to knowledge about suicide (convergent validity) but for the most part unrelated to lay theories of suicide, political orientation, religiosity, and social desirability (discriminant validity). This novel scale shows potential for assessing individuals' beliefs about the genetics of suicide. Applications may include basic research, educational contexts, and evaluation of professional training.

  10. Autism detection in early childhood (ADEC): reliability and validity data for a Level 2 screening tool for autistic disorder.

    PubMed

    Nah, Yong-Hwee; Young, Robyn L; Brewer, Neil; Berlingeri, Genna

    2014-03-01

    The Autism Detection in Early Childhood (ADEC; Young, 2007) was developed as a Level 2 clinician-administered autistic disorder (AD) screening tool that was time-efficient, suitable for children under 3 years, easy to administer, and suitable for persons with minimal training and experience with AD. A best estimate clinical Diagnostic and Statistical Manual of Mental Disorders (4th ed., text rev.; DSM-IV-TR; American Psychiatric Association, 2000) diagnosis of AD was made for 70 children using all available information and assessment results, except for the ADEC data. A screening study compared these children on the ADEC with 57 children with other developmental disorders and 64 typically developing children. Results indicated high internal consistency (α = .91). Interrater reliability and test-retest reliability of the ADEC were also adequate. ADEC scores reliably discriminated different diagnostic groups after controlling for nonverbal IQ and Vineland Adaptive Behavior Composite scores. Construct validity (using exploratory factor analysis) and concurrent validity using performance on the Autism Diagnostic Observation Schedule (Lord et al., 2000), the Autism Diagnostic Interview-Revised (Le Couteur, Lord, & Rutter, 2003), and DSM-IV-TR criteria were also demonstrated. Signal detection analysis identified the optimal ADEC cutoff score, with the ADEC identifying all children who had an AD (N = 70, sensitivity = 1.0) but overincluding children with other disabilities (N = 13, specificity ranging from .74 to .90). Together, the reliability and validity data indicate that the ADEC has potential to be established as a suitable and efficient screening tool for infants with AD.

  11. Validity and Reliability of the Italian Version of the Functioning Assessment Short Test (FAST) in Bipolar Disorder

    PubMed Central

    Moro, Maria Francesca; Colom, Francesc; Floris, Francesca; Pintus, Elisa; Pintus, Mirra; Contini, Francesca; Carta, Mauro Giovanni

    2012-01-01

    Background: Functioning Assessment Short Test (FAST) is a brief instrument designed to assess the main functioning problems experienced by psychiatric patients, specifically bipolar patients. It includes 24 items assessing impairment or disability in six domains of functioning: autonomy, occupational functioning, cognitive functioning, financial issues, interpersonal relationships and leisure time. The aim of this study is to measure the validity and reliability of the Italian version of this instrument. Methods: Twenty-four patients with DSM-IV TR bipolar disorder and 20 healthy controls were recruited and evaluated in three private clinics in Cagliari (Sardinia, Italy). The psychometric properties of FAST (feasibility, internal consistency, concurrent validity, discriminant validity (patients vs controls and eutimic patients vs manic and depressed), and test-retest reliability were analyzed. Results: The internal consistency obtained was very high with a Cronbach's alpha of 0.955. A highly significant negative correlation with GAF was obtained (r = -0.9; p < 0.001) pointing to a reasonable degree of concurrent validity. FAST show a good test-retest reliability between two independent evaluation differing of one week (mean K =0.73). The total FAST scores were lower in controls as compared with Bipolar Patients and in Euthimic patients compared with Depressed or Manic. Conclusion: The Italian version of the FAST showed similar psychometrics properties as far as regard internal consistency and discriminant validity of the original version and show a good test retest reliability measure by means of K statistics. PMID:22905035

  12. Reliability correction for functional connectivity: Theory and implementation.

    PubMed

    Mueller, Sophia; Wang, Danhong; Fox, Michael D; Pan, Ruiqi; Lu, Jie; Li, Kuncheng; Sun, Wei; Buckner, Randy L; Liu, Hesheng

    2015-11-01

    Network properties can be estimated using functional connectivity MRI (fcMRI). However, regional variation of the fMRI signal causes systematic biases in network estimates including correlation attenuation in regions of low measurement reliability. Here we computed the spatial distribution of fcMRI reliability using longitudinal fcMRI datasets and demonstrated how pre-estimated reliability maps can correct for correlation attenuation. As a test case of reliability-based attenuation correction we estimated properties of the default network, where reliability was significantly lower than average in the medial temporal lobe and higher in the posterior medial cortex, heterogeneity that impacts estimation of the network. Accounting for this bias using attenuation correction revealed that the medial temporal lobe's contribution to the default network is typically underestimated. To render this approach useful to a greater number of datasets, we demonstrate that test-retest reliability maps derived from repeated runs within a single scanning session can be used as a surrogate for multi-session reliability mapping. Using data segments with different scan lengths between 1 and 30 min, we found that test-retest reliability of connectivity estimates increases with scan length while the spatial distribution of reliability is relatively stable even at short scan lengths. Finally, analyses of tertiary data revealed that reliability distribution is influenced by age, neuropsychiatric status and scanner type, suggesting that reliability correction may be especially important when studying between-group differences. Collectively, these results illustrate that reliability-based attenuation correction is an easily implemented strategy that mitigates certain features of fMRI signal nonuniformity.

  13. Reliability of the Blessed Telephone Information-Memory-Concentration Test.

    PubMed

    Kawas, C; Karagiozis, H; Resau, L; Corrada, M; Brookmeyer, R

    1995-10-01

    In-person cognitive evaluations can be costly and labor intensive in geographically widespread populations. Reliable telephone instruments that screen for cognitive status would greatly facilitate epidemiologic and other longitudinal studies. We evaluated the reliability of the Blessed Information-Memory-Concentration (IMC) test when administered by telephone. Eighty-four subjects with a wide range of cognitive abilities were administered the Blessed IMC twice over a 3-week interval. Forty-nine of the subjects were administered the test both by telephone and in-person, and 35 of the subjects were tested twice by telephone. Spearman's rank correlation was used to compare scores of the different administrations (.96; P < .001) and to examine test-retest reliability (.96; P < .001). The Blessed Telephone IMC (TIMC) test exhibits excellent reliability both when compared to in-person administration as well as in test-retest results. The Blessed TIMC appears to be a practical instrument for population and longitudinal studies when in-person assessment is not feasible.

  14. Reliability and validity of a smartphone pulse rate application for the assessment of resting and elevated pulse rate.

    PubMed

    Mitchell, Katy; Graff, Megan; Hedt, Corbin; Simmons, James

    2016-08-01

    Purpose/hypothesis: This study was designed to investigate the test-retest reliability, concurrent validity, and the standard error of measurement (SEm) of a pulse rate assessment application (Azumio®'s Instant Heart Rate) on both Android® and iOS® (iphone operating system) smartphones as compared to a FT7 Polar® Heart Rate monitor. Number of subjects: 111.

  15. Reliability and Discriminative Ability of a New Method for Soccer Kicking Evaluation.

    PubMed

    Radman, Ivan; Wessner, Barbara; Bachl, Norbert; Ruzic, Lana; Hackl, Markus; Baca, Arnold; Markovic, Goran

    2016-01-01

    The study aimed to evaluate the test-retest reliability of a newly developed 356 Soccer Shooting Test (356-SST), and the discriminative ability of this test with respect to the soccer players' proficiency level and leg dominance. Sixty-six male soccer players, divided into three groups based on their proficiency level (amateur, n = 24; novice semi-professional, n = 18; and experienced semi-professional players, n = 24), performed 10 kicks following a two-step run up. Forty-eight of them repeated the test on a separate day. The following shooting variables were derived: ball velocity (BV; measured via radar gun), shooting accuracy (SA; average distance from the ball-entry point to the goal centre), and shooting quality (SQ; shooting accuracy divided by the time elapsed from hitting the ball to the point of entry). No systematic bias was evident in the selected shooting variables (SA: 1.98±0.65 vs. 2.00±0.63 m; BV: 24.6±2.3 vs. 24.5±1.9 m s-1; SQ: 2.92±1.0 vs. 2.93±1.0 m s-1; all p>0.05). The intra-class correlation coefficients were high (ICC = 0.70-0.88), and the coefficients of variation were low (CV = 5.3-5.4%). Finally, all three 356-SST variables identify, with adequate sensitivity, differences in soccer shooting ability with respect to the players' proficiency and leg dominance. The results suggest that the 356-SST is a reliable and sensitive test of specific shooting ability in men's soccer. Future studies should test the validity of these findings in a fatigued state, as well as in other populations.

  16. Practices in Adequate Structural Design

    NASA Technical Reports Server (NTRS)

    Ryan, Robert S.

    1989-01-01

    Structural design and verification of space vehicles and space systems is a very tricky and awe inspiring business, particularly for manned missions. Failures in the missions with loss of life is devastating personally and nationally. The scope of the problem is driven by high performance requirements which push state-of-the-art technologies, creating high sensitivites to small variations and uncertainties. Insurance of safe, reliable flight dictates the use of sound principles, procedures, analysis, and testing. Many of those principles which were refocused by the Space Shuttle Challenger (51-L) accident on January 26, 1986, and the activities conducted to insure safe shuttle reflights are discussed. The emphasis will be focused on engineering, while recognizing that project and project management are also key to success.

  17. Substance Dependence Severity Scale (SDSS): reliability and validity of a clinician-administered interview for DSM-IV substance use disorders.

    PubMed

    Miele, G M; Carpenter, K M; Smith Cockerham, M; Trautman, K D; Blaine, J; Hasin, D S

    2000-04-01

    No existing diagnostic interview assesses severity of dependence based on DSM-IV criteria across a range of substances. The Substance Dependence Severity Scale (SDSS) was designed to serve this purpose, consisting of substance-specific scales of both severity and frequency of DSM-IV criteria. This study investigated the reliability and validity of the SDSS. The test-retest reliability of the SDSS in 175 (112 male and 63 female) treated substance users ranged from good to excellent for alcohol, cocaine, heroin and sedatives (interclass correlation coefficients (ICCs)=0.75-0.88 for severity, 0.67-0.85 for frequency). Results for cannabis were lower, ranging from fair to good (ICCs=0.50-0.62). Results for joint rating and internal consistency reliability were comparable to test-retest findings. In addition to indicators of concurrent validity, scale applications are presented and discussed.

  18. The puzzling reliability of the Force Concept Inventory

    NASA Astrophysics Data System (ADS)

    Lasry, Nathaniel; Rosenfield, Steven; Dedic, Helena; Dahan, Ariel; Reshef, Orad

    2011-09-01

    The Force Concept Inventory (FCI) has influenced the development of many research-based pedagogies. However, no data exists on the FCI's internal consistency or test-retest reliability. The FCI was administered twice to one hundred students during the first week of classes in an electricity and magnetism course with no review of mechanics between test administrations. High Kuder-Richardson reliability coefficient values, which estimate the average correlation of scores obtained on all possible halves of the test, suggest strong internal consistency. However, 31% of the responses changed from test to retest, suggesting weak reliability for individual questions. A chi-square analysis shows that change in responses was neither consistent nor completely random. The puzzling conclusion is that although individual FCI responses are not reliable, the FCI total score is highly reliable.

  19. Reliability and validity of measurement and associations between disability and behavioural factors in patients with Colles' fracture.

    PubMed

    Lövgren, Anneli; Hellström, Karin

    2012-04-01

    The aims of the study were to 1) investigate the test-retest reliability, the internal consistency in instruments that measure behavioural factors and disability as well as to investigate convergent validity between the Disabilities of the Arm, Shoulder, and Hand Outcome Questionnaire (DASH) and the Patient-Rated Wrist Evaluation (PRWE), in patients with Colles' fracture; and 2) assess the relationship between the behavioural measures and the region-specific measures addressing the patient perceptions of impairment, functional loss, and disability. Two samples (sample 1 = 16; sample 2 = 16) of patients with the fracture immobilised in plaster cast were included. The participants answered the Patient-Rated Wrist Evaluation (PRWE), Disabilities of the Arm, Shoulder, and Hand Outcome Questionnaire (DASH), Tampa Scale of Kinesophobia (TSK), Catastrophizing Subscale (CAT) of the Coping Strategies Questionnaire (CSQ), and Self-Efficacy Scale (SES) twice. Test-retest reliability was satisfactory for all instruments. The internal consistency examined with Cronbach's alpha was between 0.68 and 0.97. Because acceptable to good test-retest reliability and internal consistency were demonstrated for the PRWE, DASH, TSK, CAT of the CSQ, and SES, they can be used to detect and monitor fear of movement/(re)injury, catastrophic cognitions, and self-efficacy in patients with radius fracture in the acute and subacute phase. Generally low to moderate correlations were found between behavioural and region-specific measures, indicating that there are two distinct concepts that are not interchangeable.

  20. Validity and reliability of the Spanish version of the 10-item CD-RISC in patients with fibromyalgia

    PubMed Central

    2014-01-01

    Background No resilience scale has been validated in Spanish patients with fibromyalgia. The aim of this study was to evaluate the validity and reliability of the 10-item CD-RISC in a sample of Spanish patients with fibromyalgia. Methods Design: Observational prospective multicenter study. Sample: Patients with diagnoses of fibromyalgia recruited from primary care settings (N = 208). Instruments: In addition to sociodemographic data, the following questionnaires were administered: Pain Visual Analogue Scale (PVAS), the 10-item Connor-Davidson Resilience scale (10-item CD-RISC), the Fibromyalgia Impact Questionnaire (FIQ), the Hospital Anxiety and Depression Scale (HADS), the Pain Catastrophizing Scale (PCS), the Chronic Pain Acceptance Questionnaire (CPAQ), and the Mindful Attention Awareness Scale (MAAS). Results Regarding construct validity, the factor solution in the Principal Component Analysis (PCA) was considered adequate, so the KMO test had a value of 0.91, and the Barlett’s test of sphericity was significant (χ2 = 852.8; gl = 45; p < 0.001). Only one factor showed an eigenvalue greater than 1, and it explained 50.4% of the variance. PCA and Confirmatory Factor Analysis (CFA) results did not show significant differences between groups. The 10-item CD-RISC scale demonstrated good internal consistency (Cronbach’s alpha = 0.88) and test-retest reliability (r = 0.89 for a six-week interval). The 10-item CD-RISC score was significantly correlated with all of the other psychometric instruments in the expected direction, except for the PVAS (−0.115; p = 0.113). Conclusions Our study confirms that the Spanish version of the 10-item CD-RISC shows, in patients with fibromyalgia, acceptable psychometric properties, with a high level of reliability and validity. PMID:24484847

  1. Reliability of plasma lipopolysaccharide-binding protein (LBP) from repeated measures in healthy adults.

    PubMed

    Citronberg, Jessica S; Wilkens, Lynne R; Lim, Unhee; Hullar, Meredith A J; White, Emily; Newcomb, Polly A; Le Marchand, Loïc; Lampe, Johanna W

    2016-09-01

    Plasma lipopolysaccharide-binding protein (LBP), a measure of internal exposure to bacterial lipopolysaccharide, has been associated with several chronic conditions and may be a marker of chronic inflammation; however, no studies have examined the reliability of this biomarker in a healthy population. We examined the temporal reliability of LBP measured in archived samples from participants in two studies. In Study one, 60 healthy participants had blood drawn at two time points: baseline and follow-up (either three, six, or nine months). In Study two, 24 individuals had blood drawn three to four times over a seven-month period. We measured LBP in archived plasma by ELISA. Test-retest reliability was estimated by calculating the intraclass correlation coefficient (ICC). Plasma LBP concentrations showed moderate reliability in Study one (ICC 0.60, 95 % CI 0.43-0.75) and Study two (ICC 0.46, 95 % CI 0.26-0.69). Restricting the follow-up period improved reliability. In Study one, the reliability of LBP over a three-month period was 0.68 (95 % CI: 0.41-0.87). In Study two, the ICC of samples taken ≤seven days apart was 0.61 (95 % CI 0.29-0.86). Plasma LBP concentrations demonstrated moderate test-retest reliability in healthy individuals with reliability improving over a shorter follow-up period.

  2. Inter-observer Reliability of the Prism and Alternate Cover Test in Children with Esotropia

    PubMed Central

    2008-01-01

    Objective To determine 95% limits of agreement on a measurement and on a difference between two measurements for the prism and alternate cover test (PACT) at distance and at near fixation. Methods In a test-retest reliability study, 143 children aged 60 months or younger with esotropia were examined by two masked examiners on one or two occasions yielding 199 test-retest pairs for PACT at distance fixation and 239 test-retest pairs for PACT at near fixation. Results For angles >20 prism diopters (PD), the 95% limits of agreement on a measurement and on a difference between two measurements were ±7.3 PD and ±10.4 PD respectively for PACT at distance, and ±8.3 PD and ±11.7 PD respectively for PACT at near. For angles 10 to 20 PD, the 95% limits of agreement on a measurement and on a difference between two measurements were ±4.1 PD and ±5.8 PD respectively for PACT at distance, and ±3.3 PD and ±4.7 PD respectively for PACT at near. Conclusion In childhood esotropia, differences of 12 PD or more for angles >20PD, and differences of 6 PD or more for angles between 10 PD and 20PD, are likely to indicate real change. Smaller differences could be real change but could also be due to measurement error. PMID:19139339

  3. Environmental education curriculum evaluation questionnaire: A reliability and validity study

    NASA Astrophysics Data System (ADS)

    Minner, Daphne Diane

    The intention of this research project was to bridge the gap between social science research and application to the environmental domain through the development of a theoretically derived instrument designed to give educators a template by which to evaluate environmental education curricula. The theoretical base for instrument development was provided by several developmental theories such as Piaget's theory of cognitive development, Developmental Systems Theory, Life-span Perspective, as well as curriculum research within the area of environmental education. This theoretical base fueled the generation of a list of components which were then translated into a questionnaire with specific questions relevant to the environmental education domain. The specific research question for this project is: Can a valid assessment instrument based largely on human development and education theory be developed that reliably discriminates high, moderate, and low quality in environmental education curricula? The types of analyses conducted to answer this question were interrater reliability (percent agreement, Cohen's Kappa coefficient, Pearson's Product-Moment correlation coefficient), test-retest reliability (percent agreement, correlation), and criterion-related validity (correlation). Face validity and content validity were also assessed through thorough reviews. Overall results indicate that 29% of the questions on the questionnaire demonstrated a high level of interrater reliability and 43% of the questions demonstrated a moderate level of interrater reliability. Seventy-one percent of the questions demonstrated a high test-retest reliability and 5% a moderate level. Fifty-five percent of the questions on the questionnaire were reliable (high or moderate) both across time and raters. Only eight questions (8%) did not show either interrater or test-retest reliability. The global overall rating of high, medium, or low quality was reliable across both coders and time, indicating

  4. The reliability of local dynamic stability in walking while texting and performing an arithmetical problem.

    PubMed

    Hamacher, Dennis; Hamacher, Daniel; Törpel, Alexander; Krowicki, Martin; Herold, Fabian; Schega, Lutz

    2016-02-01

    In the recent years, local dynamic stability of walking was frequently used to quantify motor control. Particularly, dual-task paradigms are used to assess a shift in gait control strategy to test walking in real life situations. Texting short messages while walking is a common motor-cognitive dual task of daily living. To able to monitor possible intervention effects on motor-cognitive dual-task performance, the test-retest reliability of the measure has to be evaluated. Since the reliability of the effects of cognitive tasks including texting while walking on local dynamic gait stability has not been assessed yet, this will be evaluated in the current study. Eleven young individuals were included. Gait data was registered twice (test-retest interval: seven days) using an inertial sensor fixed on the subjects' trunks in three conditions: normal walking, walking while texting a message and walking while reciting serials of 7. Short-term finite maximum Lyapunov Exponents were quantified to assess local dynamic stability. The test-retest reliability was calculated using intra-class correlation coefficients and Bland and Altman Plots (bias and limits of agreement). ICC values of the current study show that in normal walking and walking while texting, outcomes are comparable and indicate mostly good to excellent reliability. The reliability values were almost always the lowest in walking while reciting serials of 7. Local dynamic stability derived from kinematic data of walking while cell phone texting can be reliably collected and, in turn, be used as an outcome measure in clinical trials with repeated measures design.

  5. Absolute and relative reliability of lumbar interspinous process ultrasound imaging measurements

    PubMed Central

    Tozawa, Ryosuke; Katoh, Munenori; Aramaki, Hidefumi; Kawasaki, Tsubasa; Nishikawa, Yuichi; Kumamoto, Tsuneo; Fujinawa, Osamu

    2016-01-01

    [Purpose] The intra- and inter-examiner reliabilities of lumbar interspinous process distances measured by ultrasound imaging were examined. [Subjects and Methods] The subjects were 10 males who had no history of orthopedic diseases or dysfunctions. Ten lumbar interspinous images from 360 images captured from 10 subjects were selected. The 10 images were measured by nine examiners. The lumbar interspinous process distance measurements were performed five times by each examiner. In addition, four of the nine examiners measured the distances again after 4 days for test-retest analysis. In statistical analysis, the intraclass correlation coefficient was used to investigate relative reliability, and Bland-Altman analysis was used to investigate absolute reliability. [Results] The intraclass correlation coefficients (1, 1) for intra-examiner reliability ranged from 0.985 to 0.998. For inter-rater reliability, the intraclass correlation coefficient (2, 1) was 0.969. The intraclass correlation coefficients (1, 2) for test-retest reliability ranged from 0.991 to 0.999. The Bland-Altman analysis results indicated no systematic error. [Conclusion] The results indicate that ultrasound measurements of interspinous process distance are highly reliable even when measured only once by a single person. PMID:27630399

  6. Reliability of the Norwegian version of the Children's Assessment of Participation and Enjoyment (CAPE) and Preferences for Activities of Children (PAC).

    PubMed

    Nordtorp, Heidi L; Nyquist, Astrid; Jahnsen, Reidun; Moser, Thomas; Strand, Liv Inger

    2013-05-01

    This study examined test-retest reliability of the Norwegian version of Children's Assessment of Participation and Enjoyment (CAPE), and Preferences for Activities of Children (PAC) in children with and without disabilities. Totally 141 children, 107 typically developing, mean age 11.1, and 34 with disabilities, mean age 14.2 years participated. A cross-sectional, test-retest design was applied. The participants completed CAPE and PAC twice within mean 19 days. Reliability was examined by Chronbach's alpha, intraclass correlation coefficients (ICC), and Kappa statistics. The alpha values for internal consistency varied between 0.53 and 0.87 for the CAPE and between 0.75 and 0.93 for the PAC. ICC coefficients varied from 0.49 to 0.83 for the CAPE and 0.50 to 0.85 for the PAC. Kappa coefficients varied from 0.30 to 0.66. The Norwegian CAPE and PAC demonstrated sufficient measurement properties of internal consistency and test-retest reliability. The reliability of the CAPE, however, was not entirely satisfactory.

  7. The Alcohol Use Disorder and Associated Disabilities Interview Schedule-IV (AUDADIS-IV): Reliability of New Psychiatric Diagnostic Modules and Risk Factors in a General Population Sample

    PubMed Central

    Ruan, W. June; Goldstein, Risë B.; Chou, S. Patricia; Smith, Sharon M.; Saha, Tulshi D.; Pickering, Roger P.; Dawson, Deborah A.; Huang, Boji; Stinson, Frederick S.; Grant, Bridget F.

    2008-01-01

    This study presents test-retest reliability statistics and information on internal consistency for new diagnostic modules and risk factor of alcohol, drug, and psychiatric disorders the Alcohol Use Disorder and Associated Disabilities Interview Schedule-IV (AUDADIS-IV). Test-retest statistics were derived from a random sample of 1,899 adults selected from 34,653 respondents who participated in the 2004–2005 Wave 2 National Epidemiologic Survey on Alcohol and Related Conditions (NESARC). Internal consistency of continuous scales was assessed using the entire Wave 2 NESARC. Both test and retest interviews were conducted face-to-face. Test-retest and internal consistency results for diagnoses and symptom scales associated with posttraumatic stress disorder, attention-deficit/hyperactivity disorder, and borderline, narcissistic, and schizotypal personality disorders were predominantly good (kappa > 0.63; ICC > 0.69; alpha > 0.75) and reliability for risk factor measures fell within the good to excellent range (intraclass correlations = 0.50–0.94; alpha = 0.64–0.90). The high degree of reliability found in this study suggests that new AUDADIS-IV diagnostic measures can be useful tools in research settings. The availability of highly reliable measures of risk factors of alcohol, drug, and psychiatric disorders will contribute to the validity of conclusions drawn from future research in the domains of substance use disorder and psychiatric epidemiology. PMID:17706375

  8. 21 CFR 1404.900 - Adequate evidence.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 21 Food and Drugs 9 2012-04-01 2012-04-01 false Adequate evidence. 1404.900 Section 1404.900 Food and Drugs OFFICE OF NATIONAL DRUG CONTROL POLICY GOVERNMENTWIDE DEBARMENT AND SUSPENSION (NONPROCUREMENT) Definitions § 1404.900 Adequate evidence. Adequate evidence means information sufficient...

  9. 21 CFR 1404.900 - Adequate evidence.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 9 2010-04-01 2010-04-01 false Adequate evidence. 1404.900 Section 1404.900 Food and Drugs OFFICE OF NATIONAL DRUG CONTROL POLICY GOVERNMENTWIDE DEBARMENT AND SUSPENSION (NONPROCUREMENT) Definitions § 1404.900 Adequate evidence. Adequate evidence means information sufficient...

  10. Low-Frequency Fluctuations of the Resting Brain: High Magnitude Does Not Equal High Reliability

    PubMed Central

    Jia, Wenbin; Liao, Wei; Li, Xun; Huang, Huiyuan; Yuan, Jianhua; Zang, Yu-Feng; Zhang, Han

    2015-01-01

    The amplitude of low-frequency fluctuation (ALFF) measures low-frequency oscillations of the blood-oxygen-level-dependent signal, characterizing local spontaneous activity during the resting state. ALFF is a commonly used measure for resting-state functional magnetic resonance imaging (rs-fMRI) in numerous basic and clinical neuroscience studies. Using a test-retest rs-fMRI dataset consisting of 21 healthy subjects and three repetitive scans, we found that several key brain regions with high ALFF intensities (or magnitude) had poor reliability. Such regions included the posterior cingulate cortex, the medial prefrontal cortex in the default mode network, parts of the right and left thalami, and the primary visual and motor cortices. The above finding was robust with regard to different sample sizes (number of subjects), different scanning parameters (repetition time) and variations of test-retest intervals (i.e., intra-scan, intra-session, and inter-session reliability), as well as with different scanners. Moreover, the qualitative, map-wise results were validated further with a region-of-interest-based quantitative analysis using “canonical” coordinates as reported previously. Therefore, we suggest that the reliability assessments be incorporated in future ALFF studies, especially for the brain regions with a large ALFF magnitude as listed in our paper. Splitting single data into several segments and assessing within-scan “test-retest” reliability is an acceptable alternative if no “real” test-retest datasets are available. Such evaluations might become more necessary if the data are collected with clinical scanners whose performance is not as good as those that are used for scientific research purposes and are better maintained because the lower signal-to-noise ratio may further dampen ALFF reliability. PMID:26053265

  11. Assessing local instrument reliability and validity: a field-based example from northern Uganda.

    PubMed

    Betancourt, Theresa S; Bass, Judith; Borisova, Ivelina; Neugebauer, Richard; Speelman, Liesbeth; Onyango, Grace; Bolton, Paul

    2009-08-01

    This paper presents an approach for evaluating the reliability and validity of mental health measures in non-Western field settings. We describe this approach using the example of our development of the Acholi psychosocial assessment instrument (APAI), which is designed to assess depression-like (two tam, par and kumu), anxiety-like (ma lwor) and conduct problems (kwo maraco) among war-affected adolescents in northern Uganda. To examine the criterion validity of this measure in the absence of a traditional gold standard, we derived local syndrome terms from qualitative data and used self reports of these syndromes by indigenous people as a reference point for determining caseness. Reliability was examined using standard test-retest and inter-rater methods. Each of the subscale scores for the depression-like syndromes exhibited strong internal reliability ranging from alpha = 0.84-0.87. Internal reliability was good for anxiety (0.70), conduct problems (0.83), and the pro-social attitudes and behaviors (0.70) subscales. Combined inter-rater reliability and test-retest reliability were good for most subscales except for the conduct problem scale and prosocial scales. The pattern of significant mean differences in the corresponding APAI problem scale score between self-reported cases vs. noncases on local syndrome terms was confirmed in the data for all of the three depression-like syndromes, but not for the anxiety-like syndrome ma lwor or the conduct problem kwo maraco.

  12. Reliability and validity of the Italian version of the 14-item Resilience Scale

    PubMed Central

    Callegari, Camilla; Bertù, Lorenza; Lucano, Melissa; Ielmini, Marta; Braggio, Elena; Vender, Simone

    2016-01-01

    Life-Brief Version. The test-retest reliability, assessed on the 26 subjects 5 weeks after the first evaluation, highlighted an intraclass correlation coefficient value equal to 0.65. Factor analysis retains three factors, and it considers the factor loadings >0.40: RS-14-06 (‘I am determined’) is loaded on all the factors and RS-14-12 (‘In an emergency, I am someone people can generally rely on’) is not loaded on any factor. Conclusion This study demonstrates that the Italian RS-14 has psychometric properties with a good level of internal consistency (Cronbach’s alpha = 0.88), an adequate concurrent validity, verified by relationships with the other scales and as it was expected from literature, and an acceptable test-retest reliability. PMID:27757055

  13. Preliminary reliability of the five item physical activity questionnaire

    PubMed Central

    Cho, Min-Haeng

    2016-01-01

    [Purpose] The purpose of this study was to design a physical activity questionnaire reflecting on the basic principles and recommendations of exercise and to examine its reliability. [Subjects and Methods] 342 males and 374 females from the community centers (senior center, residential culture center, sport center, and YWCA center) participated in this study. [Results] The test-retest reliability of the physical activity questionnaire, measured with an interval of three months, being between 0.61 and 0.91 signifies that the questionnaire was useful instrument for assessing physical activity levels. [Conclusion] This study found that the simple physical activity questionnaire containing the frequency, duration, intensity, overall length, and type of activities that the person performed during their leisure time was reliable. PMID:28174459

  14. Daily Record of Severity of Problems (DRSP): reliability and validity.

    PubMed

    Endicott, J; Nee, J; Harrison, W

    2006-01-01

    The Daily Record of Severity of Problems (DRSP) form was developed to aid in the diagnosis and evaluation of DSM-IV Premenstrual Dysphoric Disorder (PMDD). The reliability and validity of the procedure was tested in two studies. Study A included 27 subjects who ranged from having few or no premenstrual problems to those who met criteria for PMDD. Study B included 243 subjects, all of whom met criteria for PMDD. Individual items and Summary Scores had high test-retest reliability in both studies. Internal consistency of Summary Scores was also high in both studies. Summary Scores had moderate to high correlations with other measures of severity of illness. In addition, items and Summary Scores have been shown to be sensitive to change and to treatment differences in Study B. The DRSP provides sensitive, reliable, and valid measures of the symptoms and impairment criteria for PMDD.

  15. Preliminary reliability of the five item physical activity questionnaire.

    PubMed

    Cho, Min-Haeng

    2016-12-01

    [Purpose] The purpose of this study was to design a physical activity questionnaire reflecting on the basic principles and recommendations of exercise and to examine its reliability. [Subjects and Methods] 342 males and 374 females from the community centers (senior center, residential culture center, sport center, and YWCA center) participated in this study. [Results] The test-retest reliability of the physical activity questionnaire, measured with an interval of three months, being between 0.61 and 0.91 signifies that the questionnaire was useful instrument for assessing physical activity levels. [Conclusion] This study found that the simple physical activity questionnaire containing the frequency, duration, intensity, overall length, and type of activities that the person performed during their leisure time was reliable.

  16. The Trojan Lifetime Champions Health Survey: Development, Validity, and Reliability

    PubMed Central

    Sorenson, Shawn C.; Romano, Russell; Scholefield, Robin M.; Schroeder, E. Todd; Azen, Stanley P.; Salem, George J.

    2015-01-01

    Context Self-report questionnaires are an important method of evaluating lifespan health, exercise, and health-related quality of life (HRQL) outcomes among elite, competitive athletes. Few instruments, however, have undergone formal characterization of their psychometric properties within this population. Objective To evaluate the validity and reliability of a novel health and exercise questionnaire, the Trojan Lifetime Champions (TLC) Health Survey. Design Descriptive laboratory study. Setting A large National Collegiate Athletic Association Division I university. Patients or Other Participants A total of 63 university alumni (age range, 24 to 84 years), including former varsity collegiate athletes and a control group of nonathletes. Intervention(s) Participants completed the TLC Health Survey twice at a mean interval of 23 days with randomization to the paper or electronic version of the instrument. Main Outcome Measure(s) Content validity, feasibility of administration, test-retest reliability, parallel-form reliability between paper and electronic forms, and estimates of systematic and typical error versus differences of clinical interest were assessed across a broad range of health, exercise, and HRQL measures. Results Correlation coefficients, including intraclass correlation coefficients (ICCs) for continuous variables and κ agreement statistics for ordinal variables, for test-retest reliability averaged 0.86, 0.90, 0.80, and 0.74 for HRQL, lifetime health, recent health, and exercise variables, respectively. Correlation coefficients, again ICCs and κ, for parallel-form reliability (ie, equivalence) between paper and electronic versions averaged 0.90, 0.85, 0.85, and 0.81 for HRQL, lifetime health, recent health, and exercise variables, respectively. Typical measurement error was less than the a priori thresholds of clinical interest, and we found minimal evidence of systematic test-retest error. We found strong evidence of content validity, convergent

  17. Validity and Reliability of General Nutrition Knowledge Questionnaire for Adults in Uganda

    PubMed Central

    Bukenya, Richard; Ahmed, Abhiya; Andrade, Jeanette M.; Grigsby-Toussaint, Diana S.; Muyonga, John; Andrade, Juan E.

    2017-01-01

    This study sought to develop and validate a general nutrition knowledge questionnaire (GNKQ) for Ugandan adults. The initial draft consisted of 133 items on five constructs associated with nutrition knowledge; expert recommendations (16 items), food groups (70 items), selecting food (10 items), nutrition and disease relationship (23 items), and food fortification in Uganda (14 items). The questionnaire validity was evaluated in three studies. For the content validity (study 1), a panel of five content matter nutrition experts reviewed the GNKQ draft before and after face validity. For the face validity (study 2), head teachers and health workers (n = 27) completed the questionnaire before attending one of three focus groups to review the clarity of the items. For the construct and test-rest reliability (study 3), head teachers (n = 40) from private and public primary schools and nutrition (n = 52) and engineering (n = 49) students from Makerere University took the questionnaire twice (two weeks apart). Experts agreed (content validity index, CVI > 0.9; reliability, Gwet’s AC1 > 0.85) that all constructs were relevant to evaluate nutrition knowledge. After the focus groups, 29 items were identified as unclear, requiring major (n = 5) and minor (n = 24) reviews. The final questionnaire had acceptable internal consistency (Cronbach α > 0.95), test-retest reliability (r = 0.89), and differentiated (p < 0.001) nutrition knowledge scores between nutrition (67 ± 5) and engineering (39 ± 11) students. Only the construct on nutrition recommendations was unreliable (Cronbach α = 0.51, test-retest r = 0.55), which requires further optimization. The final questionnaire included topics on food groups (41 items), selecting food (2 items), nutrition and disease relationship (14 items), and food fortification in Uganda (22 items) and had good content, construct, and test-retest reliability to evaluate nutrition knowledge among Ugandan adults. PMID:28230779

  18. Reliability of the Strengths and Difficulties Questionnaire in Japanese Preschool Children Aged 4–6 Years

    PubMed Central

    Doi, Yuriko; Ishihara, Kaneyoshi; Uchiyama, Makoto

    2014-01-01

    Background The Strengths and Difficulties Questionnaire (SDQ) has been widely used as a brief behavioral screening. The aim of this study was to examine the internal consistency and test-retest reliability of the 3- to 4-year-old version of the SDQ (SDQ 3–4) in Japanese preschool children. Methods The SDQ 3–4 was administered to 754 parents who had 4- to 6-year-old children attending kindergartens or childcare centers in Wako City, Japan, at 2 different times (Time 1 and Time 2) over a 2-week interval between June and July 2012. Cronbach’s α and correlation coefficients were used to examine internal consistency and test-retest reliability, respectively. Results Of 393 parents who returned their responses at Time 1 (response rate 52.1%), 383 were used for analysis after excluding 10 responses with missing data. Their children’s mean age was 4.7 (standard deviation 0.7) years. The internal consistency (Cronbach’s α) was good for the total difficulties score (0.74) and the prosocial behavior scale (0.70). However, it was slightly worse for the emotional symptoms, conduct problems, and hyperactivity scales (0.61–0.66) and poor for the peer problems scale (0.45). Of the 383 included respondents at Time 1, 211 parents returned their responses at Time 2 (response rate: 55.1%). Test-retest reliability (correlation coefficients) was good (0.73–0.82), except for the peer problems scale (0.58). Conclusions The results support the reliability of the SDQ 3–4 being satisfactory for the total difficulties score and prosocial behavior scale and being acceptable for the emotional symptoms, conduct problems, and hyperactivity scales in Japanese preschool children aged 4–6 years. PMID:25373462

  19. Validity and Reliability of the Upper Extremity Work Demands Scale.

    PubMed

    Jacobs, Nora W; Berduszek, Redmar J; Dijkstra, Pieter U; van der Sluis, Corry K

    2016-11-15

    Purpose To evaluate validity and reliability of the upper extremity work demands (UEWD) scale. Methods Participants from different levels of physical work demands, based on the Dictionary of Occupational Titles categories, were included. A historical database of 74 workers was added for factor analysis. Criterion validity was evaluated by comparing observed and self-reported UEWD scores. To assess structural validity, a factor analysis was executed. For reliability, the difference between two self-reported UEWD scores, the smallest detectable change (SDC), test-retest reliability and internal consistency were determined. Results Fifty-four participants were observed at work and 51 of them filled in the UEWD twice with a mean interval of 16.6 days (SD 3.3, range = 10-25 days). Criterion validity of the UEWD scale was moderate (r = .44, p = .001). Factor analysis revealed that 'force and posture' and 'repetition' subscales could be distinguished with Cronbach's alpha of .79 and .84, respectively. Reliability was good; there was no significant difference between repeated measurements. An SDC of 5.0 was found. Test-retest reliability was good (intraclass correlation coefficient for agreement = .84) and all item-total correlations were >.30. There were two pairs of highly related items. Conclusion Reliability of the UEWD scale was good, but criterion validity was moderate. Based on current results, a modified UEWD scale (2 items removed, 1 item reworded, divided into 2 subscales) was proposed. Since observation appeared to be an inappropriate gold standard, we advise to investigate other types of validity, such as construct validity, in further research.

  20. Validity and Reliability of the Abbreviated Barratt Impulsiveness Scale in Spanish (BIS-15S)*

    PubMed Central

    Orozco-Cabal, Luis; Rodríguez, Maritza; Herin, David V.; Gempeler, Juanita; Uribe, Miguel

    2010-01-01

    Objective This study determined the validity and reliability of a new, abbreviated version of the Spanish Barratt Impulsiveness Scale (BIS-15S) in Colombian subjects. Method The BIS-15S was tested in non-clinical (n=283) and clinical (n=164) native Spanish-speakers. Intra-scale reliability was calculated using Cronbach’s α, and test-retest reliability was measured with Pearson correlations. Psychometric properties were determined using standard statistics. A factor analysis was performed to determine BIS-15S factor structure. Results 447 subjects participated in the study. Clinical subjects were older and more educated compared to non-clinical subjects. Impulsivity scores were normally distributed in each group. BIS-15S total, motor, non-planning and attention scores were significantly lower in non-clinical vs. clinical subjects. Subjects with substance-related disorders had the highest BIS-15S total scores, followed by subjects with bipolar disorders and bulimia nervosa/binge eating. Internal consistency was 0.793 and test-retest reliability was 0.80. Factor analysis confirmed a three-factor structure (attention, motor, non-planning) accounting for 47.87% of the total variance in BIS-15S total scores. Conclusions The BIS-15S is a valid and reliable self-report measure of impulsivity in this population. Further research is needed to determine additional components of impulsivity not investigated by this measure. PMID:21152412

  1. An open science resource for establishing reliability and reproducibility in functional connectomics

    PubMed Central

    Zuo, Xi-Nian; Anderson, Jeffrey S; Bellec, Pierre; Birn, Rasmus M; Biswal, Bharat B; Blautzik, Janusch; Breitner, John C.S; Buckner, Randy L; Calhoun, Vince D; Castellanos, F. Xavier; Chen, Antao; Chen, Bing; Chen, Jiangtao; Chen, Xu; Colcombe, Stanley J; Courtney, William; Craddock, R Cameron; Di Martino, Adriana; Dong, Hao-Ming; Fu, Xiaolan; Gong, Qiyong; Gorgolewski, Krzysztof J; Han, Ying; He, Ye; He, Yong; Ho, Erica; Holmes, Avram; Hou, Xiao-Hui; Huckins, Jeremy; Jiang, Tianzi; Jiang, Yi; Kelley, William; Kelly, Clare; King, Margaret; LaConte, Stephen M; Lainhart, Janet E; Lei, Xu; Li, Hui-Jie; Li, Kaiming; Li, Kuncheng; Lin, Qixiang; Liu, Dongqiang; Liu, Jia; Liu, Xun; Liu, Yijun; Lu, Guangming; Lu, Jie; Luna, Beatriz; Luo, Jing; Lurie, Daniel; Mao, Ying; Margulies, Daniel S; Mayer, Andrew R; Meindl, Thomas; Meyerand, Mary E; Nan, Weizhi; Nielsen, Jared A; O’Connor, David; Paulsen, David; Prabhakaran, Vivek; Qi, Zhigang; Qiu, Jiang; Shao, Chunhong; Shehzad, Zarrar; Tang, Weijun; Villringer, Arno; Wang, Huiling; Wang, Kai; Wei, Dongtao; Wei, Gao-Xia; Weng, Xu-Chu; Wu, Xuehai; Xu, Ting; Yang, Ning; Yang, Zhi; Zang, Yu-Feng; Zhang, Lei; Zhang, Qinglin; Zhang, Zhe; Zhang, Zhiqiang; Zhao, Ke; Zhen, Zonglei; Zhou, Yuan; Zhu, Xing-Ting; Milham, Michael P

    2014-01-01

    Efforts to identify meaningful functional imaging-based biomarkers are limited by the ability to reliably characterize inter-individual differences in human brain function. Although a growing number of connectomics-based measures are reported to have moderate to high test-retest reliability, the variability in data acquisition, experimental designs, and analytic methods precludes the ability to generalize results. The Consortium for Reliability and Reproducibility (CoRR) is working to address this challenge and establish test-retest reliability as a minimum standard for methods development in functional connectomics. Specifically, CoRR has aggregated 1,629 typical individuals’ resting state fMRI (rfMRI) data (5,093 rfMRI scans) from 18 international sites, and is openly sharing them via the International Data-sharing Neuroimaging Initiative (INDI). To allow researchers to generate various estimates of reliability and reproducibility, a variety of data acquisition procedures and experimental designs are included. Similarly, to enable users to assess the impact of commonly encountered artifacts (for example, motion) on characterizations of inter-individual variation, datasets of varying quality are included. PMID:25977800

  2. Reliability and Validity of the Turkish Version of the Addiction Severity Index in Male Alcohol Dependents

    PubMed Central

    DEMİRBAŞ, Hatice; ÖZGÜR İLHAN, İnci; DOĞAN, Yıldırım Beyatlı; CANATAN, Ayşe

    2014-01-01

    Introduction We aimed to evaluate the psychometric characteristics of the Turkish translation of the Addiction Severity Index (ASI) in 115 male alcohol-dependent patients. Method The reliability of the instrument was assessed by measuring test-retest, interrater and internal reliabilities. In the validity analysis, the correlation coefficients between corresponding severity ratings and composite scores of each subscale and concurrent validity were assessed. Moreover, the discriminant validity and concurrent validity scores were calculated. Results The test-retest reliability of the ASI scores ranged from .79 to .91. The interrater reliability assigned by three raters was high (.74 to .99). Cronbach’s alpha coefficient for internal consistency was .85 for all scales, and it varied between .64 and .77 for the subscales. The Beck Depression Inventory moderately correlated with the Psychatric status, and the MacAndrew Alcoholism Scale correlated with the Alcohol and Drug Use subscales of the Addiction Severity Index (ASI). The correlation coefficient was .91 for the alcohol use subscale. Conclusion The results obtained in this study suggest that the Turkish version of the ASI could be used as a reliable and valid instrument in alcohol-dependent patients.

  3. Reliability and validity of a talent identification test battery for seated and standing Paralympic throws.

    PubMed

    Spathis, Jemima Grace; Connick, Mark James; Beckman, Emma Maree; Newcombe, Peter Anthony; Tweedy, Sean Michael

    2015-01-01

    Paralympic throwing events for athletes with physical impairments comprise seated and standing javelin, shot put, discus and seated club throwing. Identification of talented throwers would enable prediction of future success and promote participation; however, a valid and reliable talent identification battery for Paralympic throwing has not been reported. This study evaluates the reliability and validity of a talent identification battery for Paralympic throws. Participants were non-disabled so that impairment would not confound analyses, and results would provide an indication of normative performance. Twenty-eight non-disabled participants (13 M; 15 F) aged 23.6 years (±5.44) performed five kinematically distinct criterion throws (three seated, two standing) and nine talent identification tests (three anthropometric, six motor); 23 were tested a second time to evaluate test-retest reliability. Talent identification test-retest reliability was evaluated using Intra-class Correlation Coefficient (ICC) and Bland-Altman plots (Limits of Agreement). Spearman's correlation assessed strength of association between criterion throws and talent identification tests. Reliability was generally acceptable (mean ICC = 0.89), but two seated talent identification tests require more extensive familiarisation. Correlation strength (mean rs = 0.76) indicated that the talent identification tests can be used to validly identify individuals with competitively advantageous attributes for each of the five kinematically distinct throwing activities. Results facilitate further research in this understudied area.

  4. 5 CFR 919.900 - Adequate evidence.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 5 Administrative Personnel 2 2010-01-01 2010-01-01 false Adequate evidence. 919.900 Section 919.900 Administrative Personnel OFFICE OF PERSONNEL MANAGEMENT (CONTINUED) CIVIL SERVICE REGULATIONS (CONTINUED) GOVERNMENTWIDE DEBARMENT AND SUSPENSION (NONPROCUREMENT) Definitions § 919.900 Adequate...

  5. Validity and reliability of an IMU-based method to detect APAs prior to gait initiation.

    PubMed

    Mancini, Martina; Chiari, Lorenzo; Holmstrom, Lars; Salarian, Arash; Horak, Fay B

    2016-01-01

    Anticipatory postural adjustments (APAs) prior to gait initiation have been largely studied in traditional, laboratory settings using force plates under the feet to characterize the displacement of the center of pressure. However clinical trials and clinical practice would benefit from a portable, inexpensive method for characterizing APAs. Therefore, the main objectives of this study were (1) to develop a novel, automatic IMU-based method to detect and characterize APAs during gait initiation and (2) to measure its test-retest reliability. Experiment I was carried out in the laboratory to determine the validity of the IMU-based method in 10 subjects with PD (OFF medication) and 12 control subjects. Experiment II was carried out in the clinic, to determine test-retest reliability of the IMU-based method in a different set of 17 early-to-moderate, treated subjects with PD (tested ON medication) and 17 age-matched control subjects. Results showed that gait initiation characteristics (both APAs and 1st step) detected with our novel method were significantly correlated to the characteristics calculated with a force plate and motion analysis system. The size of APAs measured with either inertial sensors or force plate was significantly smaller in subjects with PD than in control subjects (p<0.05). Test-retest reliability for the gait initiation characteristics measured with inertial sensors was moderate-to-excellent (0.56

  6. Validity and reliability of the South African health promoting schools monitoring questionnaire.

    PubMed

    Struthers, Patricia; Wegner, Lisa; de Koker, Petra; Lerebo, Wondwossen; Blignaut, Renette J

    2016-10-02

    Health promoting schools, as conceptualised by the World Health Organisation, have been developed in many countries to facilitate the health-education link. In 1994, the concept of health promoting schools was introduced in South Africa. In the process of becoming a health promoting school, it is important for schools to monitor and evaluate changes and developments taking place. The Health Promoting Schools (HPS) Monitoring Questionnaire was developed to obtain opinions of students about their school as a health promoting school. It comprises 138 questions in seven sections: socio-demographic information; General health promotion programmes; health related Skills and knowledge; Policies; Environment; Community-school links; and support Services. This paper reports on the reliability and face validity of the HPS Monitoring Questionnaire. Seven experts reviewed the questionnaire and agreed that it has satisfactory face validity. A test-retest reliability study was conducted with 83 students in three high schools in Cape Town, South Africa. The kappa-coefficients demonstrate mostly fair (κ-scores between 0.21 and 0.4) to moderate (κ-scores between 0.41 and 0.6) agreement between test-retest General and Environment items; poor (κ-scores up to 0.2) agreement between Skills and Community test-retest items, fair agreement between Policies items, and for most of the questions focussing on Services a fair agreement was found. The study is a first effort at providing a tool that may be used to monitor and evaluate students' opinions about changes in health promoting schools. Although the HPS Monitoring Questionnaire has face validity, the results of the reliability testing were inconclusive. Further research is warranted.

  7. Validity and Reliability of an IMU-based Method to Detect APAs Prior to Gait Initiation

    PubMed Central

    Chiari, Lorenzo; Holmstrom, Lars; Salarian, Arash; Horak, Fay B.

    2015-01-01

    Anticipatory postural adjustments (APAs) prior to gait initiation have been largely studied in in traditional, laboratory settings using force plates under the feet to characterize the displacement of the center of pressure. However clinical trials and clinical practice would benefit from a portable, inexpensive method for characterizing APAs. Therefore, the main objectives of this study were: 1) to develop a novel, automatic IMU-based method to detect and characterize APAs during gait initiation and 2) to measure its test-retest reliability. Experiment I was carried out in the laboratory to determine the validity of the IMU-based method in ten subjects with PD (OFF medication) and 12 control subjects. Experiment II was carried out in the clinic, to determine test-retest reliability of the IMU-based method in a different set of 17 early-to-moderate, treated subjects with PD (tested ON medication) and 17 age-matched control subjects. Results showed that gait initiation characteristics (both APAs and 1st step) detected with our novel method were significantly correlated to the characteristics calculated with a force plate and motion analysis system. The size of APAs measured with either inertial sensors or force plate were significantly smaller in subjects with PD than in control subjects (p<0.05). Test-retest reliability for the gait initiation characteristics measured with inertial sensors was moderate-to-excellent (.56

  8. Reliability and Validity of the Behavioral Addiction Measure for Video Gaming.

    PubMed

    Sanders, James L; Williams, Robert J

    2016-01-01

    Most tests of video game addiction have weak construct validity and limited ability to correctly identify people in denial. The purpose of the present research was to investigate the reliability and validity of a new test of video game addiction (Behavioral Addiction Measure-Video Gaming [BAM-VG]) that was developed in part to address these deficiencies. Regular adult video gamers (n = 506) were recruited from a Canadian online panel and completed a survey containing three measures of excessive video gaming (BAM-VG; DSM-5 criteria for Internet Gaming Disorder [IGD]; and the IGD-20), as well as questions concerning extensiveness of video game involvement and self-report of problems associated with video gaming. One month later, they were reassessed for the purposes of establishing test-retest reliability. The BAM-VG demonstrated good internal consistency as well as 1 month test-retest reliability. Criterion-related validity was demonstrated by significant correlations with the following: time spent playing, self-identification of video game problems, and scores on other instruments designed to assess video game addiction (DSM-5 IGD, IGD-20). Consistent with the theory, principal component analysis identified two components underlying the BAM-VG that roughly correspond with impaired control and significant negative consequences deriving from this impaired control. Together with its excellent construct validity and other technical features, the BAM-VG represents a reliable and valid test of video game addiction.

  9. Establishing the validity and reliability of the Project Talent Personality Inventory.

    PubMed

    Pozzebon, Julie; Damian, Rodica I; Hill, Patrick L; Lin, Yuchen; Lapham, Susan; Roberts, Brent W

    2013-01-01

    Project Talent is a national longitudinal study that started in 1960. The original sample included over 440,000 students, which amounted to a 5% representative sample of high school students across the United States. Previous research has not yet established the validity and reliability of the personality measure used in this study, that is, the Project Talent Personality Inventory (PTPI). Given the potential interest and use of the PTPI in forthcoming research, the goals of the present paper were to establish (a) the construct and predictive validity and (b) the internal consistency and test-retest reliability of the PTPI. This information will be valuable to researchers who might be interested in using the PTPI to predict life course outcomes, such as mortality, occupational success, relationship success, and health. Study 1 found that the 10 sub-scales of the PTPI showed good internal consistency reliability, as well as good construct and predictive validity. With the use of several modern personality measures, we showed how the 10 PTPI scales can be mapped onto the Big Five personality traits, and we examined their relations with health, well-being, and life satisfaction outcomes. Study 2 found that the 10 PTPI scales showed good test-retest reliability. Together, these findings allow researchers to better understand and use the PTPI scales, as they are available in Project Talent.

  10. Patient satisfaction with out-patient rehabilitation therapy: validity and reliability

    PubMed Central

    Lee, Dae-Hee; Park, Se-Yeon; Ha, Ji Sun

    2016-01-01

    [Purpose] The purpose of present study were to develop an out-patient satisfaction questionnaire to be used in health care system, from which the underlying dimensions could be derived and individual patient scores calculated, and to evaluate some of the questionnaire’s psychometric properties. [Subjects and Methods] Forty out-patient of local hospital reply both the questionnaire used in previous study and newly designed questionnaire. To identifying validity, the statistical linear relationship between the total score of the primary questionnaire and newly designed questionnaire, which were analyzed. The test-retest reliability has been investigated by using a single measure intra class correlation. [Results] The average satisfaction of the previous questionnaire were significantly correlated with newly designed questionnaire. The intra-lass correlation coefficient of the each items of newly designed questionnaire were strong. Total score of the previous questionnaire had the lowest test-retest reliability, Cronbach’ s alpha coefficient for the newly designed questionnaire score showed acceptable inter-item reliability. [Conclusion] The out-patients’ satisfaction questionnaire developed in present study, which had appropriate validity, reliability, and acceptability. PMID:28174450

  11. Reliability of clinician judgements of bruxism.

    PubMed

    Marbach, J J; Raphael, K G; Janal, M N; Hirschkorn-Roth, R

    2003-02-01

    Bruxism is considered to be a parafunctional disorder requiring treatment and is viewed as a risk factor for the development of temporomandibular disorders (TMDs). The purpose of this investigation is to examine the reliability of clinician judgements of bruxism severity. Twenty dentists who are faculty members in a dental school examined 29 stone casts and gold-plated models of individual teeth for evidence of bruxism. Ordinal ratings of bruxism severity for the 29 augmented models were made on two occasions, approximately 3 months apart. Inter-rater reliability among all clinicians, evaluated using intraclass correlation coefficients (ICCs), was poor at both time one and time two (i.e. ICC = 0.33 and 0.32, respectively), with somewhat better reliability found among those clinicians with above-average time elapsed since completion of dental training (i.e. ICC = 0.48 and 0.50 for time 1 and time 2, respectively). Three-month test-retest reliabilities were fair (ICC = 0.46) for the full group of raters and were unrelated to clinicians' degree of confidence in their ratings. These results indicate a need to standardize methods for clinical assessment of bruxism. Additionally, they have implications for studies using clinical assessments of bruxism to test the association between bruxism and other conditions such as TMDs.

  12. The Autism Observation Scale for Infants: scale development and reliability data.

    PubMed

    Bryson, Susan E; Zwaigenbaum, Lonnie; McDermott, Catherine; Rombough, Vicki; Brian, Jessica

    2008-04-01

    The Autism Observation Scale for Infants (AOSI) was developed to detect and monitor early signs of autism as they emerge in high-risk infants (all with an older sibling with an autistic spectrum disorder). Here we describe the scale and its development, and provide preliminary data on its reliability. Inter-rater reliability both for total scores and total number of endorsed items is good to excellent at 6, 12 and 18 months; reliability is more modest for individual items, particularly in 6-month-olds. Test-retest reliability of the AOSI at 12 months of age is within acceptable limits. Evidence that the AOSI provides reliable data is the first critical step towards evaluating its efficacy in distinguishing high-risk infants who develop ASD.

  13. Psychopathology scale of the Hutt adaptation of the Bender-Gestalt Test: reliability.

    PubMed

    Miller, L J; Hutt, M L

    1975-04-01

    The test-retest reliability of the Hutt Adaptation of the Bender-Gestalt test was explored with a population of 40 process schizophrenics over a two-week interval. The total Psychopathology Scale Score was found to have high retest reliability for both male and female patients (rho = .87 for males and .83 for females). Moreover the three major components for the Scale were found to have high reliability, and fairly high reliabilities were obtained for patients scoring high as well as low on the Scale. Interjudge reliability was also found to be very high (rho = .895), confirming previous studies in this respect. On these grounds, the Scale offers promise both for clinical and research purposes.

  14. A comprehensive reliability assessment of quantitative diffusion tensor tractography.

    PubMed

    Wang, Jun Yi; Abdi, Hervé; Bakhadirov, Khamid; Diaz-Arrastia, Ramon; Devous, Michael D

    2012-04-02

    Diffusion tensor tractography is increasingly used to examine structural connectivity in the brain in various conditions, but its test-retest reliability is understudied. The main purposes of this study were to evaluate 1) the reliability of quantitative measurements of diffusion tensor tractography and 2) the effect on reliability of the number of gradient sampling directions and scan repetition. Images were acquired from ten healthy participants. Ten fiber regions of nine major fiber tracts were reconstructed and quantified using six fiber variables. Intra- and inter-session reliabilities were estimated using intraclass correlation coefficient (ICC) and coefficient of variation (CV), and were compared to pinpoint major error sources. Additional pairwise comparisons were made between the reliability of images with 30 directions and NEX 2 (DTI30-2), 30 directions and NEX 1 (DTI30-1), and 15 directions and NEX 2 (DTI15-2) to determine whether increasing gradient directions and scan repetition improved reliability. Of the 60 tractography measurements, 43 showed intersession CV ≤ 10%, ICC ≥ .70, or both for DTI30-2, 40 measurements for DTI30-1, and 37 for DTI15-2. Most of the reliable measurements were associated with the tracts corpus callosum, cingulum, cerebral peduncular fibers, uncinate fasciculus, and arcuate fasciculus. These reliable measurements included factional anisotropy (FA) and mean diffusivity of all 10 fiber regions. Intersession reliability was significantly worse than intra-session reliability for FA, mean length, and tract volume measurements from DTI15-2, indicating that the combination of MRI signal variation and physiological noise/change over time was the major error source for this sequence. Increasing the number of gradient directions from 15 to 30 while controlling the scan time, significantly affected values for all six variables and reduced intersession variability for mean length and tract volume measurements. Additionally, while

  15. Electric toothbrush application is a reliable and valid test for differentiating temporomandibular disorders pain patients from controls

    PubMed Central

    Nixdorf, Donald R; Hemmaty, Azar; Look, John O; Schiffman, Eric L; John, Mike T

    2009-01-01

    Background Current methods for identifying patients with pain hypersensitivity are sufficiently complex to limit their widespread application in clinical settings. We assessed the reliability and validity of a simple multi-modal vibrotactile stimulus, applied using an electric toothbrush, to evaluate its potential as a screening tool for central sensitization. Methods Fourteen female temporomandibular disorders (TMD) subjects with myofascial pain (RDC/TMD Ia or Ib) and arthralgia (RDC/TMD IIIa) were compared to 13 pain-free controls of matched age and gender. Vibrotactile stimulus was performed with an electric toothbrush, applied with 1 pound pressure for 30 seconds in four locations: over the lateral pole of the temporomandibular joint, masseter, temporalis, and mid-ventral surface of forearm. Pain intensity (0–10) was recorded following the stimulus at 0, 15, 30, and 60 seconds. Test-retest reliability was assessed with measurements from 8 participants, taken 2–12 hours apart. Case versus control differentiation involved comparison of area under the curve (AUC). A receiver operating characteristic (ROC) curve was used to determine cutoff AUC scores for maximum sensitivity and specificity for this multi-modal vibrotactile stimulus. Results Test-retest reliability resulted in an ICC of 0.87 for all 4 pooled sites. ROC-determined AUC cutoff scores resulted in a sensitivity of 57% and specificity of 92% for all 4 pooled sites. Conclusion The electric toothbrush stimulus had excellent test-retest reliability. Validity of the scores was demonstrated with modest sensitivity and good specificity for differentiating TMD pain patients from controls, which are acceptable properties for a screening test. PMID:19643013

  16. Reliability and validity of the Safe Routes to school parent and student surveys

    PubMed Central

    2011-01-01

    Background The purpose of this study is to assess the reliability and validity of the U.S. National Center for Safe Routes to School's in-class student travel tallies and written parent surveys. Over 65,000 tallies and 374,000 parent surveys have been completed, but no published studies have examined their measurement properties. Methods Students and parents from two Charlotte, NC (USA) elementary schools participated. Tallies were conducted on two consecutive days using a hand-raising protocol; on day two students were also asked to recall the previous days' travel. The recall from day two was compared with day one to assess 24-hour test-retest reliability. Convergent validity was assessed by comparing parent-reports of students' travel mode with student-reports of travel mode. Two-week test-retest reliability of the parent survey was assessed by comparing within-parent responses. Reliability and validity were assessed using kappa statistics. Results A total of 542 students participated in the in-class student travel tally reliability assessment and 262 parent-student dyads participated in the validity assessment. Reliability was high for travel to and from school (kappa > 0.8); convergent validity was lower but still high (kappa > 0.75). There were no differences by student grade level. Two-week test-retest reliability of the parent survey (n = 112) ranged from moderate to very high for objective questions on travel mode and travel times (kappa range: 0.62 - 0.97) but was substantially lower for subjective assessments of barriers to walking to school (kappa range: 0.31 - 0.76). Conclusions The student in-class student travel tally exhibited high reliability and validity at all elementary grades. The parent survey had high reliability on questions related to student travel mode, but lower reliability for attitudinal questions identifying barriers to walking to school. Parent survey design should be improved so that responses clearly indicate issues that influence

  17. Reliability of Pinch Strength Testing in Elderly Subjects with Unilateral Thumb Carpometacarpal Osteoarthritis

    PubMed Central

    Villafañe, Jorge H.; Valdes, Kristin

    2014-01-01

    [Purpose] The aim of this study was to examine the test-retest reliability of pinch strength testing in elderly subjects with thumb CMC OA. [Subjects and Methods] A total of 27 patients with unilateral right-thumb CMC OA (mean ± SD age: 81.3 ± 4.7 years) were recruited. Each patient performed three pain-free maximal isometric contractions on each hand on two occasions, one week apart. Three different measurements were taken: tip, tripod, and key pinch strength. Intraclass correlation coefficient (ICC), standard error of measurement (SEM), and 95% limits of agreement (LOA) calculations were performed. [Results] Test-retest reliability of measurements of tip, tripod, and key pinch strength was excellent for the affected side (ICC=0.93, 0.96, and 0.99) and the contralateral thumb (ICC=0.91, 0.92, and 0.94). [Conclusions] The present results indicate that maximum pinch strength can be measured reliably using the Pinch Gauge Dynamometer, in patients with thumb CMC OA, which enables its use in research and in the clinic to determine the effect of interventions on improving pinch strength. PMID:25140081

  18. Does gymnastics practice improve vertical jump reliability from the age of 8 to 10 years?

    PubMed

    Marina, Michel; Torrado, Priscila

    2013-01-01

    The objective of this study was to confirm whether gymnastics practice from a young age can induce greater vertical jump reliability. Fifty young female gymnasts (8.84 ± 0.62 years) and 42 females in the control group (8.58 ± 0.92 years) performed the following jump tests on a contact mat: squat jump, countermovement jump, countermovement jump with arm swing and drop jump from heights of 40 and 60 cm. The two testing sessions had three trials each and were separated by one week. A 2 (groups) × 2 (sessions) × 3 (trials) repeated measures analysis of variance (ANOVA) and a test-retest correlation analysis were used to study the reliability. There was no systematic source of error in either group for non-plyometric jumps such as squat jump, countermovement jump, and countermovement jump with arm swing. A significant group per trial interaction revealed a learning effect in gymnasts' drop jumps from 40 cm height. Additionally, the test-retest correlation analysis and the higher minimum detectable error suggest that the quick drop jump technique was not fully consolidated in either group. At an introductory level of gymnastics and between the ages of 8-10 years, the condition of being a gymnast did not lead to conclusively higher reliability, aside from better overall vertical jump performance.

  19. Reliability of the Chinese Version of the Activities-specific Balance Confidence Scale

    PubMed Central

    Hsu, Priscilla C.; Miller, William C.

    2012-01-01

    Purpose To translate the Activities-specific Balance Confidence (ABC) Scale into a Chinese version and assess the reliability between Chinese versions and between Chinese and English versions of this outcome measure. Method Descriptive study using a 4-week test-retest design. Data were collected from a convenience sample of community living Chinese immigrants. Of the 79 participants, data from 71 subjects were included in the analysis. Two subsamples were formed to assess the reliability between Chinese versions (n=33) and between Chinese and English versions (n=38) of the scale. Results Internal consistency of the ABC was 0.98. Test-retest reliability was ICC=0.87 (95% CI, 0.76–0.93) for the Chinese versions and ICC = 0.88 (95% CI, 0.78–0.94) for Chinese and English versions. The total group ICC=.90 (95% CI, 0.84–0.94). Conclusions Balance confidence has been identified as an important area for clinical and research inquiry however collecting this information from Chinese speaking individuals has been limited by a lack of language specific measures. The Chinese version of the ABC has demonstrated acceptable measurement properties in this sample and should permit measurement of this unique construct in the Chinese population. PMID:17083176

  20. Reliability of the modified Thomas test using a lumbo-plevic stabilization

    PubMed Central

    Kim, Gyoung-Mo; Ha, Sung-Min

    2015-01-01

    [Purpose] The purpose of this study was to examine the test-retest reliability of the modified Thomas test using lumbo-pelvic stabilization. [Subjects] Thirteen subjects (male=10, female=3) with hip flexor tightness voluntarily participated in the study. [Methods] The participants underwent the modified Thomas test under three conditions: 1) the general modified Thomas test (GM), 2) active lumbo-pelvic stabilization (ALS), and 3) passive lumbo-pelvic stabilization (PLS). Intra-class correlation coefficients (ICC) were used to determine the test-retest reliability of the knee joint angle measurement under three conditions. The standard error of measurement (SEM) and minimal detectable difference (95% confidence interval) (MDD95) were calculated for each measurement to assess absolute consistency. [Results] The ALS (ICC = 0.99) and PLS (ICC = 0.98) methods for the modified Thomas test were more reliable than GM method (ICC = 0.97). The MDD95 score for the ALS method, 2.35 degrees, indicated that a real difference existed between two testing sessions compared with the scores for the PLS (3.70 degrees) and GM methods (4.17 degrees) [Conclusion] Lumbo-pelvic stabilization is one of the considerations for precise measurement and may help to minimize measurement error when evaluating hip flexor tightness using the modified Thomas test. PMID:25729187

  1. Reliability and validity of the Flemish Physical Activity Computerized Questionnaire in adults.

    PubMed

    Matton, Lynn; Wijndaele, Katrien; Duvigneaud, Nathalie; Duquet, William; Philippaerts, Renaat; Thomis, Martine; Lefevre, Johan

    2007-09-01

    The purpose of this study was to investigate the test-retest reliability and concurrent validity of the Flemish Physical Activity Computerized Questionnaire (FPACQ) in employed/unemployed and retired people. The FPACQ was developed to assess detailed information on several dimensions of physical activity and sedentary behavior over a usual week. A triaxial accelerometer, the RT3 Triaxial Research Tracker (RT3), in combination with a written 7-day activity record, was used as the objective criterion measure. In employed/unemployed people, 2-week test-retest reliability for several activity variables calculated from the FPACQ was good to excellent with intraclass correlations (ICCs) ranging from .67 to .99. In retired people ICCs were lower but, except for time spent eating, still fair to excellent, ranging from .57 to .96. Except for time spent in leisure time activities for men and the average energy expenditure related to sports participation in women, correlations between the RT3 and the FPACQ generally supported the relative validity of the FPACQ for employed/unemployed people (r ranging from .37 to .88). Values for retired people were somewhat lower (r ranging from .15 to .85), but most variables still reached at least moderate correlations. Concerning absolute validity, the FPACQ generally overestimated physical activity and underestimated sedentary behavior compared to the RT3. From this study, it can be concluded that the FPACQ is a reliable and reasonably valid questionnaire for assessing different dimensions of physical activity and sedentary behavior.

  2. The Prosocial and Antisocial Behaviour in Sport Scale: further evidence for construct validity and reliability.

    PubMed

    Kavussanu, Maria; Stanger, Nicholas; Boardley, Ian D

    2013-01-01

    The purpose of this research was to provide further evidence for the construct validity (i.e., convergent, concurrent, and discriminant validity) of the Prosocial and Antisocial Behaviour in Sport Scale (PABSS), an instrument that has four subscales measuring prosocial and antisocial behaviour toward teammates and opponents. We also investigated test-retest reliability and stability of the PABSS. We conducted three studies using athletes from a variety of team sports. In Study 1, participants (N = 129) completed the PABSS and measures of physical and verbal aggression, hostility, anger, moral identity, and empathy; a sub-sample (n = 111) also completed the PABSS one week later. In Study 2, in addition to the PABSS, participants (N = 89) completed measures of competitive aggressiveness and anger, moral attitudes, moral disengagement, goal orientation, and anxiety. In Study 3, participants (N = 307) completed the PABSS and a measure of social goals. Across the three studies, the four subscales evidenced the hypothesised relationships with a number of variables. Correlations were large between the two antisocial behaviours and small between the two prosocial behaviours. Overall, the findings supported the convergent, concurrent, and discriminant validity of the scale, provided evidence for its test-retest reliability and stability, and suggest that the instrument is a valid and reliable measure of prosocial and antisocial behaviour in sport.

  3. Asbestos/NESHAP adequately wet guidance

    SciTech Connect

    Shafer, R.; Throwe, S.; Salgado, O.; Garlow, C.; Hoerath, E.

    1990-12-01

    The Asbestos NESHAP requires facility owners and/or operators involved in demolition and renovation activities to control emissions of particulate asbestos to the outside air because no safe concentration of airborne asbestos has ever been established. The primary method used to control asbestos emissions is to adequately wet the Asbestos Containing Material (ACM) with a wetting agent prior to, during and after demolition/renovation activities. The purpose of the document is to provide guidance to asbestos inspectors and the regulated community on how to determine if friable ACM is adequately wet as required by the Asbestos NESHAP.

  4. The Oscillating Brain: Complex and Reliable

    PubMed Central

    Zuo, Xi-Nian; Di Martino, Adriana; Kelly, Clare; Shehzad, Zarrar E.; Gee, Dylan G.; Klein, Donald F.; Castellanos, F. Xavier; Biswal, Bharat B.; Milham, Michael P.

    2010-01-01

    The human brain is a complex dynamic system capable of generating a multitude of oscillatory waves in support of brain function. Using fMRI, we examined the amplitude of spontaneous low-frequency oscillations (LFO) observed in the human resting brain and the test-retest reliability of relevant amplitude measures. We confirmed prior reports that gray matter exhibits higher LFO amplitude than white matter. Within gray matter, the largest amplitudes appeared along mid-brain structures associated with the “default-mode” network. Additionally, we found that high amplitude LFO activity in specific brain regions was reliable across time. Further, parcellation-based results revealed significant and highly reliable ranking orders of LFO amplitudes among anatomical parcellation units. Detailed examination of individual low frequency bands showed distinct spatial profiles. Intriguingly, LFO amplitudes in the slow-4 (0.027 - 0.073 Hz) band as defined by Buzsáki et al. were most robust in the basal ganglia, as has been found in spontaneous electrophysiological recordings in the awake rat. These results suggest that amplitude measures of LFO can contribute to further between-group characterization of existing and future “resting-state” fMRI datasets. PMID:19782143

  5. The reliability of two visual motor integration tests used with healthy adults.

    PubMed

    Brown, Ted; Chinner, Alexandra; Stagnitti, Karen

    2010-10-01

    ABSTRACT Occupational therapists often assess the visual motor integration (VMI) skills of children, adults, and the elderly, which are parts of the Body Functions and Structures of the International Classification of Functioning, Disability and Health. Objective. As it is imperative that therapists use tests and measures with strong psychometric properties, this study aims to examine the reliability of two VMI tests used with adults. Method. Sixty-one healthy adults, 18 males and 43 females, with an average age of 31.82 years, completed the Developmental Test of Visual Motor Integration (DTVMI) and the Full Range Test of Visual Motor Integration (FRTVMI). The Cronbach's alpha coefficient was used to examine the tests' internal consistency, while the Spearman's rho correlation was used to evaluate the test-retest reliability, intrarater reliability, and interrater reliability of the two VMI tests. Results. The Cronbach's alpha coefficient for the DTVMI and FRTVMI was 0.66 and 0.80, respectively. The test-retest reliability coefficient was 0.77 (p < .001) for the DTVMI and 0.61 (p < .001) for the FRTVMI. The interrater reliability correlation was significant for both DTVMI at 0.79 (p < .001) and FRTVMI at 0.80 (p < .001). The DTVMI intrarater reliability correlation result was 0.95 (p < .001) and the FRTVMI at 0.87 (p < .001). Conclusion. Overall, the DTVMI and the FRTVMI exhibited moderate to high levels of reliability when used with a sample of healthy adults. Both VMI tests appear to exhibit reasonable levels of reliability and are recommended for use with adults and the elderly.

  6. Funding the Formula Adequately in Oklahoma

    ERIC Educational Resources Information Center

    Hancock, Kenneth

    2015-01-01

    This report is a longevity, simulational study that looks at how the ratio of state support to local support effects the number of school districts that breaks the common school's funding formula which in turns effects the equity of distribution to the common schools. After nearly two decades of adequately supporting the funding formula, Oklahoma…

  7. Reliability and factorial validity of the standard progressive matrices among Kuwaiti children ages 8 to 15 years.

    PubMed

    Abdel-Khalek, Ahmed M

    2005-10-01

    The Raven Standard Progressive Matrices was administered to a sample of 6,529 children in Kuwait ranging in age from 8 to 15 years. Test-retest reliability (N = 968) ranged between .69 and .85, while Cronbach coefficients alpha ranged from .88 to .93, showing from acceptable to good temporal stability and from good to high internal consistency. The loadings of the five sets of matrices on the only salient factor ranged from .73 to .89 indicating the good factorial validity of the scale. The rtest seems useful in the Kuwaiti context.

  8. Reliability of health utility measures and a test of values clarification.

    PubMed

    Shiell, Alan; Hawe, Penelope; Fletcher, Megan

    2003-04-01

    This study examines the test-retest reliability of two methods of establishing health preference weights and assesses the effectiveness of a brief values-clarification exercise. Survey participants were randomly allocated to one of two groups and received either a standard protocol for eliciting health preferences (comparison group) or an augmented protocol designed to encourage reflection and deliberation (intervention group). Preferences were elicited on three occasions over 5 weeks. The results show that the two valuation methods each had acceptable levels of test-retest reliability. No significant differences were found in preference weights over time or between intervention and comparison groups. The values-clarification exercise had some impact on individual answers, but the changes cancelled each other out at the group level. There was no discernable intervention effect at the group level. It is premature to draw conclusions from one study about why, or even how, a person's valuations might change over time, but our results support the use of current valuation techniques for group-level analyses.

  9. Reliability and validity of a questionnaire for self-assessment of complete dentures

    PubMed Central

    2014-01-01

    Background Demand for complete denture treatment is expected to rise over several decades. However, to date, no questionnaire on complete dentures, as evaluated by edentulous patients, has been shown to be reliable and valid. This study sought to assess the reliability and validity of Patient’s Denture Assessment (PDA), which provides a multidimensional evaluation of dentures among edentulous patients. Methods Patients, who had new complete dentures fabricated at the University Hospital of Dentistry, Tokyo Medical and Dental University through 2009 to 2010, were enrolled. The reliability of the PDA was determined by examining internal consistency and test-retest reliability. Internal consistency for all of the question items and the six subscales was measured using Cronbach’s α and average inter-item correlation coefficients among 93 participants. For 33 of these participants, test-retest reliability was determined at a 2 month-interval using the interclass correlation coefficients (ICCs) and 95% confidence interval for the summary scores and the six subscale scores. The PDA was validated in 93 participants by examining the difference in the summary score and the six subscale scores of the PDA before and after replacement with new dentures by the paired t-test. Ability to detect change was also tested in 93 patients using effect size. Results The Cronbach’s α for the PDA ranged from 0.56 to 0.93. The average inter-item correlation coefficients ranged from 0.28 to 0.83. ICCs for the PDA ranged from 0.37 to 0.83. The paired t-test showed a significant difference between the summary score and the six subscale scores before and after replacement with new dentures (p < 0.05) and the effect size was 0.97. Conclusions The PDA demonstrated good reliability by assessing internal consistency and test-retest reliability. In addition, the PDA demonstrated good validity by assessing discriminant validity. Thus, the PDA could help dentists obtain a detailed

  10. A study of the development of the Korean version of PedsQLTM 3.0 cerebral palsy module and reliability and validity

    PubMed Central

    Yun, Young-Ju; Shin, Yong-Beom; Kim, Soo-Yeon; Shin, Myung-Jun; Kim, Ra-Jin; Oh, Tae-Young

    2016-01-01

    [Purpose] The purpose of this study was to develop the Korean version of the PedsQLTM 3.0 Cerebral Palsy Module to evaluate the health-related quality of life of children with cerebral palsy and to test the reliability and validity. [Subjects and Methods] The study included 108 caregivers of children with cerebral palsy aged 2 to 4 years and 72 caregivers of children aged 5 to 7 years, who visited multiple sites between February and August 2015. The Translation Commission performed the first translation with the approval of the Mapi Research Trust Company to create a Korean-version of the PedsQLTM. Afterwards, back-translation was performed by one translator specializing in health and medical treatment who was a native English-speaker fluent in Korean, and one native Korean-speaker fluent in English. The consistency of each question was confirmed and a translation-integrated version was created. Test components were explained to caregivers during a one-on-one interview; caregivers then completed the PedsQLTM questionnaire and a Pediatric Evaluation Disability Inventory (PEDI) questionnaire. Subjects contributing to test-retest measures were asked to repeat the PedsQL questionnaire one week later and return it by mail. To assess data quality for the survey question results, non-response rate, ceiling effect, and floor effect were analyzed. Test-retest reliability and internal consistency reliability were assessed. For test-retest reliability, an intraclass correlation coefficient (ICC) was calculated, and for internal consistency reliability, Cronbach’s alpha was used. To test criterion-related validity, Pearson’s correlation coefficient was used. [Results] The content validity of the PedsQL 3.0 Cerebral Palsy Module was high for both age groups, and demonstrated significant internal consistency (>0.7) in all areas. For test-retest reliability, both groups demonstrated a significant ICC (>0.61). Correlation with the PEDI was statistically significant in all

  11. Reliability and validity of the Dementia Quality of Life measure in nursing home residents.

    PubMed

    Adler, Efrat; Resnick, Barbara

    2010-08-01

    The purpose of this study was to test the reliability and validity of the Dementia Quality of Life (DQOL) in a sample of 486 residents from 12 nursing homes in the greater Baltimore area. There was some evidence of validity of the DQOL based on confirmatory factor analysis and Rasch model testing and criterion-related validity. Reliability of the DQOL was somewhat supported in this study based on internal consistency and test-retest reliability. Alpha coefficients and R(2) estimations were generally low across all of the subscales. Despite these findings, the subscale scores remained consistent over a 12-month period. The use of the single-item question about QOL may not be an accurate reflection of QOL among nursing home residents. These findings provide additional information about the psychometric properties of the DQOL and offer some recommendations for revisions in the measure to optimally measure QOL in nursing home residents.

  12. Reliability and validity of a twelve-minute walking test for coronary heart disease patients.

    PubMed

    de Greef, Mathieu H G; Sprenger, Siska R; Elzenga, Corrie T A; Popkema, Dorien Y; Bennekers, Johan H; Niemeijer, Menco G; Middel, Berry; Mook, Gerrit A

    2005-04-01

    This study examined the reliability and validity of a 12-min. walking test for coronary heart disease patients. CHD patients (28 men, 18 women) were recruited out of 86 CHD patients of the Martini Hospital Groningen, The Netherlands. 46 CHD patients (age M=66.0 yr., SD=6.8) participated in the reliability study and 24 (age M=62.0 yr., SD=9.2) in the validity study. A test-retest analysis showed a satisfactory Bland-Altman plot and an intraclass coefficient of .98. The Pearson correlation between the score on the test and the VO2 peak was .77. This test gives a reliable and valid assessment of cardiorespiratory fitness of CHD patients.

  13. The validity and reliability of the Arabic Infant/Toddler Sensory Profile.

    PubMed

    Abu-Dahab, Sana M N; Malkawi, Somaya Hussain; Nadar, Mohammad Shaban; Al Momani, Fidaa; Holm, Margo B

    2014-08-01

    In this study, we report the translation process, validity, and reliability of the Arabic Infant/Toddler Sensory Profile (IT_SP). A multistep approach was implemented to ensure the accuracy and equivalency of the Arabic and original English IT_SP. Factor analysis indicated that item loadings for over 50% of the items on the Arabic version were identical to the English version; all but three items had logical loadings. Intraclass correlation coefficients (ICC) between scores on the Arabic and English versions reported by parents who were bilingual were >.90 supporting bilingual validity. Alpha coefficients for each section varied from .40 to .74, which was within the range of the English version (.17 to .86), and were thus similar. ICCs between scores for repeated assessments varied from .81 to .99 supporting test-retest reliability. The results support the validity and reliability of the Arabic IT_SP.

  14. The reliability of a VISION COACH task as a measure of psychomotor skills.

    PubMed

    Xi, Yubin; Rosopa, Patrick J; Mossey, Mary; Crisler, Matthew C; Drouin, Nathalie; Kopera, Kevin; Brooks, Johnell O

    2014-10-01

    The VISION COACH™ interactive light board is designed to test and enhance participants' psychomotor skills. The primary goal of this study was to examine the test-retest reliability of the Full Field 120 VISION COACH task. One hundred eleven male and 131 female adult participants completed six trials where they responded to 120 randomly distributed lights displayed on the VISION COACH interactive light board. The mean time required for a participant to complete a trial was 101 seconds. Intraclass correlation coefficients, ranging from 0.962 to 0.987 suggest the VISION COACH Full Field 120 task was a reliable task. Cohen's d's of adjacent pairs of trials suggest learning effects did not negatively affect reliability after the third trial.

  15. Validity and reliability of the Korean version of the Speech Handicap Index in patients with oral cavity cancer.

    PubMed

    Park, S S; Choi, S H; Hong, J A; Hong, Y H; Jeong, N G; Lee, S Y; Sung, M-W; Hah, J H

    2016-04-01

    The aims of this study were to evaluate the cross-cultural adaptation of the Speech Handicap Index (SHI) for Korean subjects and to determine its reliability and utility in patients with oral cavity cancer. The Korean version of the SHI was administered to 50 healthy subjects and 56 patients with speech problems resulting from treatment for oral cavity cancers. The content and construct validity, internal consistency, and test-retest reliability were examined. Healthy subject and patient group scores were compared, and the Mann-Whitney U-test was used to determine discriminatory ability. The Korean version of the SHI had high internal consistency (Cronbach's alpha=0.99) and test-retest reliability for the total and subscales: total (T) 0.98, speech (S) 0.99, and psychosocial (P) 0.97. Mean scores in the healthy group were 0.5 (T), 0.2 (S), and 0.2 (P), whereas those in the patient group were 34.3 (T), 16.6 (S), and 15.5 (P). The scores differed significantly between the groups (P<0.05). The Korean version of the SHI can be a useful tool to evaluate a patient's self-perception of their speech dysfunction in daily life and to better understand postoperative speech disorders in patients with oral cavity cancer.

  16. Validity and test re-test reliability of the neck disability index in the Nigerian clinical setting.

    PubMed

    Odole, A C; Adegoke, B O A; Akomas, N C

    2011-06-01

    The neck disability index (NDI) is a valid and widely used clinical instrument, which enjoys the recommendation of the World Health Organization for outcome assessment in neck pain. Its psychometric properties have not been investigated in the Nigerian clinical setting. This study investigated the content validity and test-retest reliability of the NDI in order to encourage its integration in the Nigerian clinical setting. Content validity of NDI was assessed through an expert panel review for content relevance/coverage and pretesting. Thirty two subjects with neck pain, recruited through a purposive sampling technique participated in the study. The NDI was administered twice within 48 hours interval. Data were summarized in percentages. Intra class correlation coefficient was used to analyze data for test-retest reliability with alpha set at 0.05. Participants were 1 males, 21 females with a majority within age group 38-57. Twenty four (75%) participants had mild to moderate disability, 7 (21.9%) had severe to complete disability and one individual had no disability. There was a significant correlation (r = 0.969, P=0.01) between the scores obtained from the first administration of the NDI and the second administration. The NDI is a valid and reliable outcome measure and it is recommended for integration into the assessment of neck pain in the Nigerian clinical setting.

  17. Test retest variability of TonoPen AVIA.

    PubMed

    Bhartiya, Shibal; Bali, Shveta J; James, Mathew; Panda, Anita; Dada, Tanuj

    2013-03-01

    The study was conducted to evaluate the intra-session repeatability of Tonopen AVIA (TPA). 180 eyes of 180 patients (50 eyes with glaucoma, 130 eyes of controls) were recruited for this observational study. The mean age of patients enrolled in the study was 43.9 ± 16.7 yrs (84 males, 96 females). Mean IOP recorded with Tonopen AVIA was 19.5 ± 9.5 mmHg, 19.4 ± 9.6 mmHg and 19.3 ± 9.2 mmHg, respectively in the first, second and third instances (P = 0.656). The intraclass correlation coefficient (ICC) ranged from 0.996 (95% CI: 0.956 - 0.998) for glaucoma subjects to 0.958 (95% CI: 0.934 - 0.975) for controls. The coefficient of variation in the study population ranged from 3.47% (glaucoma patients) to 8.10% (healthy controls), being 6.07% overall. The coefficient of repeatability varied between 2.96 (glaucoma patients), 3.35 (healthy controls) to 3.24 (overall). Thus, the Tonopen Avia shows good intrasessional repeatability of IOP in both glaucomatous patients and healthy subjects.

  18. Using Multitheory Model of Health Behavior Change to Predict Adequate Sleep Behavior.

    PubMed

    Knowlden, Adam P; Sharma, Manoj; Nahar, Vinayak K

    The purpose of this article was to use the multitheory model of health behavior change in predicting adequate sleep behavior in college students. A valid and reliable survey was administered in a cross-sectional design (n = 151). For initiation of adequate sleep behavior, the construct of behavioral confidence (P < .001) was found to be significant and accounted for 24.4% of the variance. For sustenance of adequate sleep behavior, changes in social environment (P < .02), emotional transformation (P < .001), and practice for change (P < .001) were significant and accounted for 34.2% of the variance.

  19. Evaluation of clinical thermometers for accuracy and reliability.

    PubMed

    Latman, N S; Hans, P; Nicholson, L; DeLee Zint, S; Lewis, K; Shirey, A

    2001-01-01

    The purpose of this study was to examine the accuracy and reliability of a wide range of clinical thermometry instruments and technologies. In a historical sense, the purpose of this study was to determine if the improvements in speed, ease of use, and safety realized in the last 100 years have been offset by a loss of accuracy and/or reliability. In view of current events, the purpose was to determine if the new generation of electronic, digital clinical thermometers could be used to replace the traditional glass/mercury thermometers. Nine clinical thermometers representing electronic, digital oral, and predictive oral; electronic, digital infrared tympanic; and liquid crystal urinary technologies were evaluated. Accuracy was determined by comparing the temperatures obtained from these test instruments with those of the reference, glass/mercury oral thermometer. Reliability was determined by test-retest evaluation. All of the thermometers evaluated were significantly less accurate when compared with the reference thermometer in this study. All of the test instruments significantly underestimated higher temperatures and overestimated lower temperatures. This study indicated that the improvements in safety, speed, and ease of use of the newer clinical thermometers have been offset by a loss in accuracy and reliability. It also indicated that the current generation of electronic, digital clinical thermometers, in general, may not be sufficiently accurate or reliable to replace the traditional glass/mercury thermometers.

  20. The reliability and validity of the Korean version of the foot function index for patients with foot complaints.

    PubMed

    In, Tae-Sung; Jung, Jin-Hwa; Kim, Keunjo; Jung, Kyoung-Sim; Cho, Hwi-Young

    2017-01-01

    [Purpose] The purpose of this study was to establish the reliability and validity of the Foot Function Index translated into Korean for use in patients with plantar fasciitis and foot/ankle fracture. [Subjects and Methods] Thirty-six subjects with foot complaints, 14 males and 22 females, participated in the study. Reliability was determined by using the intra-class correlation coefficient and Cronbach's alpha for internal consistency. Validity was examined by correlating Foot Function Index scores with the Short Form-36 and the Visual Analog Scale scores. [Results] Test-retest reliability was 0.90 for the pain subscale, and 0.94 and 0.91 for the disability and activity limitation subscales, respectively. The criterion-related validity was established by comparison with the Korean version of the Short Form-36 and Visual Analog Scale. [Conclusion] The Korean version of the Foot Function Index was shown to be a reliable and valid instrument for assessing foot complaints.

  1. Serum thyroglobulin reference intervals in regions with adequate and more than adequate iodine intake.

    PubMed

    Wang, Zhaojun; Zhang, Hanyi; Zhang, Xiaowen; Sun, Jie; Han, Cheng; Li, Chenyan; Li, Yongze; Teng, Xiaochun; Fan, Chenling; Liu, Aihua; Shan, Zhongyan; Liu, Chao; Weng, Jianping; Teng, Weiping

    2016-11-01

    The purpose of this study was to establish normal thyroglobulin (Tg) reference intervals (RIs) in regions with adequate and more than adequate iodine intake according to the National Academy of Clinical Biochemistry (NACB) guidelines and to investigate the relationships between Tg and other factors.A total of 1317 thyroid disease-free adult subjects (578 men, 739 nonpregnant women) from 2 cities (Guangzhou and Nanjing) were enrolled in this retrospective, observational study. Each subject completed a questionnaire and underwent physical and ultrasonic examination. Serum Tg, thyroid-stimulating hormone (TSH), thyroid peroxidase antibody (TPOAb), Tg antibody (TgAb), and urinary iodine concentration (UIC) were measured. Reference groups were established on the basis of TSH levels: 0.5 to 2.0 and 0.27 to 4.2 mIU/L.The Tg RIs for Guangzhou and Nanjing were 1.6 to 30.0 and 1.9 to 25.8 ng/mL, respectively. No significant differences in Tg were found between genders or among different reference groups. Stepwise linear regression analyses showed that TgAb, thyroid volume, goiter, gender, age, and TSH levels were correlated with Tg.In adults from regions with adequate and more than adequate iodine intake, we found that Tg may be a suitable marker of iodine status; gender-specific Tg RI was unnecessary; there was no difference between Tg RIs in regions with adequate and more than adequate iodine intake; and the TSH criterion for selecting the Tg reference population could follow the local TSH reference rather than 0.5 to 2.0 mIU/L.

  2. Serum thyroglobulin reference intervals in regions with adequate and more than adequate iodine intake

    PubMed Central

    Wang, Zhaojun; Zhang, Hanyi; Zhang, Xiaowen; Sun, Jie; Han, Cheng; Li, Chenyan; Li, Yongze; Teng, Xiaochun; Fan, Chenling; Liu, Aihua; Shan, Zhongyan; Liu, Chao; Weng, Jianping; Teng, Weiping

    2016-01-01

    Abstract The purpose of this study was to establish normal thyroglobulin (Tg) reference intervals (RIs) in regions with adequate and more than adequate iodine intake according to the National Academy of Clinical Biochemistry (NACB) guidelines and to investigate the relationships between Tg and other factors. A total of 1317 thyroid disease-free adult subjects (578 men, 739 nonpregnant women) from 2 cities (Guangzhou and Nanjing) were enrolled in this retrospective, observational study. Each subject completed a questionnaire and underwent physical and ultrasonic examination. Serum Tg, thyroid-stimulating hormone (TSH), thyroid peroxidase antibody (TPOAb), Tg antibody (TgAb), and urinary iodine concentration (UIC) were measured. Reference groups were established on the basis of TSH levels: 0.5 to 2.0 and 0.27 to 4.2 mIU/L. The Tg RIs for Guangzhou and Nanjing were 1.6 to 30.0 and 1.9 to 25.8 ng/mL, respectively. No significant differences in Tg were found between genders or among different reference groups. Stepwise linear regression analyses showed that TgAb, thyroid volume, goiter, gender, age, and TSH levels were correlated with Tg. In adults from regions with adequate and more than adequate iodine intake, we found that Tg may be a suitable marker of iodine status; gender-specific Tg RI was unnecessary; there was no difference between Tg RIs in regions with adequate and more than adequate iodine intake; and the TSH criterion for selecting the Tg reference population could follow the local TSH reference rather than 0.5 to 2.0 mIU/L. PMID:27902589

  3. A reliable method for assessing rotational power.

    PubMed

    Andre, Matthew J; Fry, Andrew C; Heyrman, Melissa A; Hudy, Andrea; Holt, Brady; Roberts, Cody; Vardiman, J Phillip; Gallagher, Philip M

    2012-03-01

    Rotational core training is said to be beneficial for rotational power athletes. Currently, there has been no method proposed for the reliable assessment of rotational power. Therefore, our purpose was to determine the test-retest reliability of kinetic and kinematic rotational characteristics of a pulley system when performing a rotational exercise of the axial skeleton in the transverse plane to find out if this would be a reliable tool for evaluating rotational power. Healthy, college-aged men (n = 8) and women (n = 15) reported for 3 testing sessions. The participants were seated on a box, and they held the handle with both arms extended in front of their body, starting their motion with their torso rotated toward the machine. All the participants rotated their torso forcefully until they reached 180° of rotation, and they then slowly returned to the starting position, 3 times per trial, with 3 loads: 9% body weight (BW), 12% BW, and 15% BW. The repetition with the greatest power for each trial for each load was analyzed. The mean peak power repetition (watts) for all the subjects was 20.09 ± 7.16 (9% BW), 26.17 ± 8.6 (12% BW), and 30.74 ± 11.022 (15% BW) in the first training session and 22.3 ± 8.087 (9% BW), 28.7 ± 11.295 (12% BW), and 33.52 ± 12.965 (15% BW) in the second training session with intraclass correlation coefficients of 0.97 (9%BW), 0.94 (12%BW), and 0.95 (15%BW). When the participants were separated by sex, there were no significant differences between groups. Based on these results, it was found that a pulley system and an external dynamometer can be used together as a reliable research tool to assess rotational power.

  4. Reproducibility and Reliability of the Quality of Life Questionnaire in Patients With Atrial Fibrillation

    PubMed Central

    Moreira, Rita Simone Lopes; Bassolli, Lucas; Coutinho, Enia; Ferrer, Paloma; Bragança, Érika Olivier; Carvalho, Antonio Carlos Camargo; de Paola, Angelo Amato; Luna Filho, Bráulio

    2016-01-01

    Background Studies have shown the impact of atrial fibrillation (AF) on the patients' quality of life. Specific questionnaires enable the evaluation of relevant events. We previously developed a questionnaire to assess the quality of life of patients with AF (AFQLQ version 1), which was reviewed in this study, and new domains were added. Objective To demonstrate the reproducibility of the AFQLQ version 2 (AFQLQ v.2), which included the domains of fatigue, illness perception and well-being. Methods We applied 160 questionnaires (AFQLQ v.2 and SF-36) to 40 patients, at baseline and 15 days after, to measure inter- and intraobserver reproducibility. The analysis of quality of life stability was determined by test-retest, applying the Bartko intraclass correlation coefficient (ICC). Internal consistency was assessed by Cronbach's alpha test. Results The total score of the test-retest (n = 40) had an ICC of 0.98 in the AFQLQ v.2, and of 0.94 in the SF36. In assessing the intra- and interobserver reproducibility of the AFQLQ v.2, the ICC reliability was 0.98 and 0.97, respectively. The internal consistency had a Cronbach's alpha coefficient of 0.82, compatible with good agreement of the AFQLQ v.2. Conclusion The AFQLQ v.2 performed better than its previous version. Similarly, the domains added contributed to make it more comprehensive and robust to assess the quality of life of patients with AF. PMID:27027365

  5. Pregnancy physical activity questionnaire (PPAQ): reliability and validity of Turkish version

    PubMed Central

    Çırak, Yasemin; Yılmaz, Gül Deniz; Demir, Yasemin Parlak; Dalkılınç, Murat; Yaman, Selen

    2015-01-01

    [Purpose] The aim of this study was to translate the Pregnancy Physical Activity Questionnaire into Turkish and test its reliability and validity among Turkish pregnant women. [Subjects and Methods] The subjects were 204 healthy, single pregnant women between the ages 18 and 40 who volunteered to participate in this study. Reliability was evaluated by measuring the one-week test-retest reliability with the intraclass correlation coefficient and Pearson’s correlation analysis. Concurrent validity was examined by comparing the Pregnancy Physical Activity Questionnaire with the long form of the International Physical Activity Questionnaire and step counts with pedometer. [Results] The mean age of the participants was 28.23±4.94 years, and the mean for BMI was 26.09±4.40. For test-retest reliability, r values were respectively 0.961, 0.934, 0.957 and 0.981 for self-reported sedentary, light, moderate, and vigorous activity, respectively. Intraclass correlation coefficient scores ranged from 0.924 to 0.993. For validity, the Pearson’s correlation coefficients between the Pregnancy Physical Activity Questionnaire and long form of the International Physical Activity Questionnaire ranged from moderate (r = 0.329) to high (r = 0.672). The correlation value between the total score of the Pregnancy Physical Activity Questionnaire and the step counts was 0.70. [Conclusion] The Turkish version of the Pregnancy Physical Activity Questionnaire is a valid and reliable tool for measurement of the physical activity level of pregnant women. PMID:26834336

  6. Validity and reliability of the EQ-5D self-report questionnaire in English-speaking Asian patients with rheumatic diseases in Singapore.

    PubMed

    Luo, N; Chew, L H; Fong, K Y; Koh, D R; Ng, S C; Yoon, K H; Vasoo, S; Li, S C; Thumboo, J

    2003-02-01

    Validity and reliability of a Singaporean English EQ-5D self-report questionnaire (EQ-5D) were evaluated among consecutive outpatients with rheumatic diseases attending a tertiary referral hospital in Singapore (a multi-ethnic, urban Asian country). Subjects were interviewed twice within a 2-week period using a standardized questionnaire containing the EQ-5D, Short Form 36 Health Survey (SF-36) and assessing demographic and psychosocial characteristics. To assess validity of the EQ-5D, 13 hypotheses relating responses to EQ-5D dimension/Visual Analogue Scale (EQ-VAS) to SF-36 scores or other variables were examined using the Mann-Whitney test, Kruskal-Wallis test, or Spearman's correlation coefficient. Test-retest reliability was assessed using Cohen's kappa. Sixty-six subjects were studied (osteoarthritis: 9, rheumatoid arthritis: 26, systemic lupus erythematosus: 23, spondyloarthropathy: 8; female: 72.7%; mean age: 44.3 years). Ten of 13 a-priori hypotheses relating EQ-5D responses to external variables were fulfilled, supporting the validity of the EQ-SD. Cohen's kappa for test-retest reliability (n = 52) ranged from 0.29 to 0.61. The Singaporean English EQ-5D appears to be valid in measuring quality of life in Singaporeans with rheumatic diseases; however, its reliability requires further investigation. These data provide a basis for further studies assessing the validity of the EQ-5D in Singapore.

  7. Reliability and validity of the Japanese semistructured interview version of the Early Signs Scale (ESS-JI) for outpatients with schizophrenia (study 1).

    PubMed

    Koichi, Rieko; Miyamoto, Yuki

    2011-04-01

    The purpose of this study was to develop a semistructured interview for the Japanese version of the Early Signs Scale (ESS-JI), as well as to examine its reliability and validity. We conducted a cross-sectional study in Japan. Participants were recruited from a psychiatric clinic. The survey included 25 participants with schizophrenia; of these, 21 participants gave informed consent. For the analysis, we used data from 15 outpatients who had no missing values on the ESS-JI. Of the participants, 70% were female, and the mean age was 41.2 years. The ESS-JI was developed by the authors using a translation-back-translation procedure. Internal consistency was assessed by Cronbach's alpha coefficients, and test-retest reliability was assessed by Pearson's correlation coefficients. Correlations with other scales, such as the Behaviour and Symptom Identification Scale (BASIS-32) and the Self-Efficacy for Community Living Scale (SECL), were used to examine the concurrent and construct validity of the ESS-JI. Cronbach's alpha coefficients were high for the ESS-JI. Pearson's correlation coefficients also indicated good test-retest reliability. The ESS-JI was significantly and positively correlated with the BASIS-32. In contrast, the ESS-JI had a significant negative correlation with the SECL. This study confirmed the reliability and validity of the ESS-JI for outpatients with schizophrenia.

  8. Temporal and spatial gait parameters in patients dependent on walking assistance after stroke: reliability and agreement between simple and advanced methods of assessment.

    PubMed

    Høyer, Ellen; Opheim, Arve; Strand, Liv Inger; Moe-Nilssen, Rolf

    2014-01-01

    The aim of this study was to investigate the reliability of temporal and spatial gait parameters in patients dependent on walking assistance after severe stroke, and to examine agreement between simple and advanced methods. Twenty-one patients, admitted for in-patient multidisciplinary rehabilitation, were assessed repeatedly for walking function, both in a test corridor and a gait laboratory (3D camera system) before and after 11 weeks of rehabilitation. The test-retest reliability was examined using intraclass correlation (ICC1.1), and measurement error was reported by within-subject standard deviation (Sw). The agreement between different methods for assessing walking speed, cadence and step length was explored by Bland-Altman plots. High to excellent test-retest reliability was found between trials, both when assessed in the corridor (ICC: 0.93-0.99) and in the laboratory (ICC: 0.88-0.99). Agreement between methods was satisfactory at baseline and was higher after the rehabilitation period. Agreement was found to be slightly better at lower walking speeds and for shorter step lengths. The results implicate that temporal-spatial gait parameters may be measured reliably by both simple and advanced methods in dependent walkers after stroke. A high level of agreement was found between the two methods for walking speed, cadence and average step length at both test points.

  9. Comprehension of Written Grammar Test: Reliability and Known-Groups Validity Study With Hearing and Deaf and Hard-of-Hearing Students.

    PubMed

    Cannon, Joanna E; Hubley, Anita M; Millhoff, Courtney; Mazlouman, Shahla

    2016-01-01

    The aim of the current study was to gather validation evidence for the Comprehension of Written Grammar (CWG; Easterbrooks, 2010) receptive test of 26 grammatical structures of English print for use with children who are deaf and hard of hearing (DHH). Reliability and validity data were collected for 98 participants (49 DHH and 49 hearing) in Grades 2-6. The objectives were to: (a) examine 4-week test-retest reliability data; and (b) provide evidence of known-groups validity by examining expected differences between the groups on the CWG vocabulary pretest and main test, as well as selected structures. Results indicated excellent test-retest reliability estimates for CWG test scores. DHH participants performed statistically significantly lower on the CWG vocabulary pretest and main test than the hearing participants. Significantly lower performance by DHH participants on most expected grammatical structures (e.g., basic sentence patterns, auxiliary "be" singular/plural forms, tense, comparatives, and complementation) also provided known groups evidence. Overall, the findings of this study showed strong evidence of the reliability of scores and known group-based validity of inferences made from the CWG.

  10. Reliability and validity of scores from the Singer-Loomis Type Deployment Inventory.

    PubMed

    Arnau, R C; Rosen, D H; Thompson, B

    2000-07-01

    This paper focuses on the Singer-Loomis Type Deployment Inventory (SL-TDI), which is an alternative to the Myers-Briggs Type Indicator (MBTI). The SL-TDI utilizes a continuous, non-forced choice format and therefore is a more accurate representation of Jung's personality theory of psychological types. The purpose of the study reported here is to evaluate the reliability and validity of scores from the SL-TDI. Specifically, the goals were to (a) provide estimates of the internal consistency of SL-TDI scores; (b) evaluate the divergent validity of SL-TDI scores by examination of their relationships with the scores on a social desirability responding measure; and (c) examine the test-retest stability of scores from the SL-TDI. Strong support was found for both the reliability and validity of SL-TDI scores.

  11. The development, validity and reliability of the Hospital in the Home Dependency Scale (HDS).

    PubMed

    Santamaria, N; Daly, S; Addicott, R; Clayton, L

    2001-01-01

    The aim of this study was to develop and investigate the validity and reliability of the Hospital-in-the-Home (HITH) Dependency Scale (HDS). The HDS is a new instrument designed to measure the dependency of HITH patients. It calculates an overall dependency level by rating four dimensions of the provision of HITH nursing care. Specifically, these dimensions are the complexity of assessment, complexity of treatment, time taken to provide the treatment, and the frequency of treatment. The results of testing the HDS suggest that it is valid in measuring adult medical and surgical HITH patient dependency. The scale demonstrated strong stability over time in test retest procedures over a one month period (r = 0.80, p <0.01) and internal consistency (Cronbach's alpha = 0.72). We conclude that the HDS is a valid, reliable instrument that is quick and easy to use in the HITH setting.

  12. Reliability and validity of parent- and child-rated anxiety measures in autism spectrum disorder.

    PubMed

    Kaat, Aaron J; Lecavalier, Luc

    2015-10-01

    Autism spectrum disorder (ASD) and anxiety frequently co-occur. Research on the phenomenology and treatment of anxiety in ASD is expanding, but is hampered by the lack of instruments validated for this population. This study evaluated the self- and parent-reported Revised Child Anxiety and Depression Scale and the Multidimensional Anxiety Scale in Children-2 among 46 youth with ASD. Internal consistency and test-retest reliability were acceptable, but inter-rater reliability was poor. Parent-child agreement was better for youth with higher IQs, less severe ASD symptoms, or more social cognitive skills. Convergent and divergent validity were acceptable. Demographic characteristics were considered as predictors of anxiety: they were unrelated to parent-report, but younger age and more severe ASD were related to increased self-reported anxiety.

  13. Reliability and validity of the Brief COPE Scale (English version) among women with breast cancer undergoing treatment of adjuvant chemotherapy: a Malaysian study.

    PubMed

    Yusoff, N; Low, W Y; Yip, C H

    2010-03-01

    This paper validates the Brief COPE Scale in Malaysian women with breast cancer. Test-retest evaluation was undertaken at two/three weeks and ten weeks following surgery. Internal consistencies ranged from 0.25 to 1.00. Meanwhile, the Intraclass Correlation Coefficient (ICC) ranged from 0.05 to 1.00. Sensitivity of the scale was indicated by the mean differences as observed in most of the domains with Effect Size Index (ESI) ranged from 0 to 0.53. Significant differences between mastectomy and lumpectomy were observed for Active coping, Planning and Acceptance. Brief COPE Scale showed fairly good reliability and validity.

  14. Validity and reliability of the Spanish version of the DN4 (Douleur Neuropathique 4 questions) questionnaire for differential diagnosis of pain syndromes associated to a neuropathic or somatic component

    PubMed Central

    Perez, Concepcion; Galvez, Rafael; Huelbes, Silvia; Insausti, Joaquin; Bouhassira, Didier; Diaz, Silvia; Rejas, Javier

    2007-01-01

    Background This study assesses the validity and reliability of the Spanish version of DN4 questionnaire as a tool for differential diagnosis of pain syndromes associated to a neuropathic (NP) or somatic component (non-neuropathic pain, NNP). Methods A study was conducted consisting of two phases: cultural adaptation into the Spanish language by means of conceptual equivalence, including forward and backward translations in duplicate and cognitive debriefing, and testing of psychometric properties in patients with NP (peripheral, central and mixed) and NNP. The analysis of psychometric properties included reliability (internal consistency, inter-rater agreement and test-retest reliability) and validity (ROC curve analysis, agreement with the reference diagnosis and determination of sensitivity, specificity, and positive and negative predictive values in different subsamples according to type of NP). Results A sample of 164 subjects (99 women, 60.4%; age: 60.4 ± 16.0 years), 94 (57.3%) with NP (36 with peripheral, 32 with central, and 26 with mixed pain) and 70 with NNP was enrolled. The questionnaire was reliable [Cronbach's alpha coefficient: 0.71, inter-rater agreement coefficient: 0.80 (0.71–0.89), and test-retest intra-class correlation coefficient: 0.95 (0.92–0.97)] and valid for a cut-off value ≥ 4 points, which was the best value to discriminate between NP and NNP subjects. Discussion This study, representing the first validation of the DN4 questionnaire into another language different than the original, not only supported its high discriminatory value for identification of neuropathic pain, but also provided supplemental psychometric validation (i.e. test-retest reliability, influence of educational level and pain intensity) and showed its validity in mixed pain syndromes. PMID:18053212

  15. Hungarian adaptation of the Tinnitus Handicap Inventory: reliability and validity.

    PubMed

    Bencsik, Beata; Tamás, László; Trimmel, Krisztina; Stauder, Adrienne

    2015-09-01

    The objective of this study was to determine the reliability and validity of the Hungarian version of the original Tinnitus Handicap Inventory (THI). In the study design the original THI (THI-US) was translated into Hungarian by three independent investigators. The final Hungarian version (THI-HUN) was constructed on the basis of these Hungarian interpretations and then administered to 72 patients suffering from chronic tinnitus. Construct validity was assessed using short version of Beck's Depression Inventory (BDI), Perceived Stress Scale (PSS4 version), Visual Analogue Scale (VAS) (loudness, annoyance and pitch of tinnitus), pure tone audiometry and tinnitometry. The 72 participants were 43 women and 29 men. Their mean age was 49.86 years with a mean tinnitus duration of 4.16 years. In the results THI-HUN and its subscales showed good internal consistency reliabilities (α = 0.95-0.74), with significant correlation between THI-HUN total score and subscales and the BDI, PSS4 and VAS annoyance. There was a high or moderate correlation between THI-HUN total score and VAS loudness, tinnitus duration, hearing loss and subjective perception of tinnitus loudness. The VAS pitch of tinnitus, the subjective perception of tinnitus pitch, age, gender and level of education did not show any correlation with THI-HUN total score. The test-retest reliability was high (r = 0.97). We conclude that a valid and reliable THI-HUN questionnaire was constructed.

  16. The Eysenck Personality Questionnaire Brief Version: factor structure and reliability.

    PubMed

    Sato, Toru

    2005-11-01

    The short scale of the Eysenck Personality Questionnaire-Revised (EPQR-S; H. J. Eysenck & S. B. G. Eysenck, 1992) is a 48-item personality questionnaire primarily designed to measure an individual's level of extraversion (vs. introversion) and neuroticism. Although L. J. Francis, L. B. Brown, and R. Philipchalk (1992) created the Eysenck Personality Questionnaire Revised-Abbreviated (EPQR-A), an even briefer version of the EPQR-S, the reliability coefficients of some of the measures have been less than satisfactory (S. Forrest, C. A. Lewis, & M. Shevlin, 2000). Because brevity and reliability are both extremely important, the author of the present study created a briefer version of the EPQR-S, more reliable than the EPQR-A, by making slight alterations in the item content as well as the response format of the EPQR-S. Two hundred and sixty eight participants completed the original EPQR-S and the 24-item newly revised briefer version of the EPQR-S (EPQ-BV) twice. The findings revealed that the EPQ-BV has good internal consistency, test-retest reliability, and concurrent validity. A principal component analysis revealed a solution with factor loadings that accurately reflected the primary measures of the EPQR-S. These findings are discussed in relation to the psychometric properties of the EPQR-A and the original version of the EPQR-S.

  17. Adequate mathematical modelling of environmental processes

    NASA Astrophysics Data System (ADS)

    Chashechkin, Yu. D.

    2012-04-01

    In environmental observations and laboratory visualization both large scale flow components like currents, jets, vortices, waves and a fine structure are registered (different examples are given). The conventional mathematical modeling both analytical and numerical is directed mostly on description of energetically important flow components. The role of a fine structures is still remains obscured. A variety of existing models makes it difficult to choose the most adequate and to estimate mutual assessment of their degree of correspondence. The goal of the talk is to give scrutiny analysis of kinematics and dynamics of flows. A difference between the concept of "motion" as transformation of vector space into itself with a distance conservation and the concept of "flow" as displacement and rotation of deformable "fluid particles" is underlined. Basic physical quantities of the flow that are density, momentum, energy (entropy) and admixture concentration are selected as physical parameters defined by the fundamental set which includes differential D'Alembert, Navier-Stokes, Fourier's and/or Fick's equations and closing equation of state. All of them are observable and independent. Calculations of continuous Lie groups shown that only the fundamental set is characterized by the ten-parametric Galilelian groups reflecting based principles of mechanics. Presented analysis demonstrates that conventionally used approximations dramatically change the symmetries of the governing equations sets which leads to their incompatibility or even degeneration. The fundamental set is analyzed taking into account condition of compatibility. A high order of the set indicated on complex structure of complete solutions corresponding to physical structure of real flows. Analytical solutions of a number problems including flows induced by diffusion on topography, generation of the periodic internal waves a compact sources in week-dissipative media as well as numerical solutions of the same

  18. Reliability and validity of the Adolescent Stress Questionnaire in a sample of European adolescents - the HELENA study

    PubMed Central

    2011-01-01

    Background Since stress is hypothesized to play a role in the etiology of obesity during adolescence, research on associations between adolescent stress and obesity-related parameters and behaviours is essential. Due to lack of a well-established recent stress checklist for use in European adolescents, the study investigated the reliability and validity of the Adolescent Stress Questionnaire (ASQ) for assessing perceived stress in European adolescents. Methods The ASQ was translated into the languages of the participating cities (Ghent, Stockholm, Vienna, Zaragoza, Pecs and Athens) and was implemented within the HELENA cross-sectional study. A total of 1140 European adolescents provided a valid ASQ, comprising 10 component scales, used for internal reliability (Cronbach α) and construct validity (confirmatory factor analysis or CFA). Contributions of socio-demographic (gender, age, pubertal stage, socio-economic status) characteristics to the ASQ score variances were investigated. Two-hundred adolescents also provided valid saliva samples for cortisol analysis to compare with the ASQ scores (criterion validity). Test-retest reliability was investigated using two ASQ assessments from 37 adolescents. Results Cronbach α-values of the ASQ scales (0.57 to 0.88) demonstrated a moderate internal reliability of the ASQ, and intraclass correlation coefficients (0.45 to 0.84) established an insufficient test-retest reliability of the ASQ. The adolescents' gender (girls had higher stress scores than boys) and pubertal stage (those in a post-pubertal development had higher stress scores than others) significantly contributed to the variance in ASQ scores, while their age and socio-economic status did not. CFA results showed that the original scale construct fitted moderately with the data in our European adolescent population. Only in boys, four out of 10 ASQ scale scores were a significant positive predictor for baseline wake-up salivary cortisol, suggesting a rather poor

  19. The Turkish version of the pregnancy physical activity questionnaire: cross-cultural adaptation, reliability, and validity

    PubMed Central

    Tosun, Ozge Celiker; Solmaz, Ulas; Ekin, Atalay; Tosun, Gokhan; Mutlu, Ebru Kaya; Okyay, Emre; Adiyeke, Mehmet; Gezer, Cenk; Mat, Emre; Malkoc, Mehtap

    2015-01-01

    [Purpose] The aim of this study was to translate the Pregnancy Physical Activity Questionnaire, adapt it for use with Turkish subjects and determine its reliability and validity. [Subjects and Methods] The Pregnancy Physical Activity Questionnaire was translated into Turkish and administered twice at 7–14-day intervals to pregnant women to assess the test-retest reliability. Cronbach’s α was used for internal consistency, and the inter-rater correlation coefficient was used to calculate the test-retest reliability. The Turkish Short Form 36 Health Survey (SF-36) and the International Physical Activity Questionnaire were used to estimate validity. [Results] The internal consistency during the first and third trimesters of pregnancy was excellent, with Cronbach’s α values of 0.93 and 0.95, respectively. The mean interval between the two assessments was 11.1 ± 2.1 days. The correlation coefficient between the total activity measured by the Turkish version of the Pregnancy Physical Activity Questionnaire and the International Physical Activity Questionnaire estimates of the total metabolic equivalent were fair to poor during the first, second, and third trimesters of pregnancy (r = 0.17, r = 0.17, r = 0.21, respectively). The Turkish version of the Pregnancy Physical Activity Questionnaire showed fair correlations with the Short Form 36 Health Survey physical component score (r = −0.30) and mental component score (r = −0.37) for the first trimester of pregnancy. [Conclusion] The Turkish version of the Pregnancy Physical Activity Questionnaire was found to be reliable and valid for assessing a pregnant woman’s physical activity. PMID:26644678

  20. Validity and Reliability of the Chinese Version of the Care Transition Measure

    PubMed Central

    Tian, Lang; Liu, Wenjie; Jiang, Xiaolian

    2015-01-01

    Background The 15-item care transition measure (CTM-15) is a reliable and valid instrument assessing the quality of care transition from patients’ perspectives. The aim of this study was to evaluate the psychometric properties of the CTM-15 and the CTM-3 (a 3-item short version of the CTM-15) in Mainland China. Methodology/Findings This was a cross-sectional study with a convenience sample of 646 patients in a general tertiary-level hospital in Chengdu, China. The results indicated that the Cronbach’s α values of the Chinese version of the two measures were 0.90 and 0.56, and the test-retest reliability values were 0.91 and 0.87, respectively. Three factors were extracted for the CTM-15 in Chinese populations. The CTM-15 and the CTM-3 scores discriminated well between patients with and without re-hospitalization for their index condition. The CTM-15 and the CTM-3 had significant positive relationships with self-rated health status. The CTM-3 score was significantly related to the CTM-15 score, and the CTM-3 score accounted for 64.23% of the variance of the CTM-15 score. Conclusions/Significance This study has demonstrated the psychometric properties of the CTM-15 and the CTM-3 in Mainland China. Although the Cronbach’s α value of the CTM-3 is suboptimal, it has exhibited high test-retest reliability, convergent validity and criterion validity. Therefore, the CTM-3 can substitute the CTM-15 as a performance measurement tool when the sample size is large enough to compensate its suboptimal reliability or the reduced response burden is a concern. PMID:26000708

  1. Development of a cost effective three-dimensional posture analysis tool: validity and reliability

    PubMed Central

    2013-01-01

    Background The lack of clear understanding of the association between sitting posture and adolescent musculoskeletal pain, might reflect invalid and/or unreliable posture measurement instruments. The psychometric properties of any new measurement instrument should be demonstrated prior to use for research or clinical purposes. This paper describes psychometric testing of a new three-dimensional (3D), portable, non-invasive posture analysis tool (3D-PAT), from sequential studies using a mannequin and high school students. Methods The first study compared the 3D-(X-, Y- and Z-) coordinates of reflective markers placed on a mannequin using the 3D-PAT, and the Vicon motion analysis system. This study also tested the reliability of taking repeated measures of the 3D-coordinates of the reflective markers. The second study determined the concurrent validity and test-retest reliability of the 3D-PAT measurements of nine sitting postural angles of high school students undertaking a standard computing task. In both studies, concordance correlation coefficients and Intraclass correlation coefficients described test-retest reliability, whilst Pearson product moment correlation coefficients and Bland-Altman plots demonstrated concurrent validity. Results The 3D-PAT provides reliable and valid 3D measurements of five of the nine postural angles i.e. head flexion, neck flexion, cranio-cervical angle, trunk flexion and head lateral bending in adolescents undertaking a standard task. Conclusions The 3D-PAT is appropriate for research and clinical settings to measure five upper quadrant postural angles in three dimensions. As a measurement instrument it can provide further understanding of the relationship between sitting posture, changes to sitting posture and adolescent musculoskeletal pain. PMID:24289665

  2. Reliability and Validity of a Novel Internet-Based Battery to Assess Mood and Cognitive Function in the Elderly

    PubMed Central

    Myers, Candice A.; Keller, Jeffrey N.; Allen, H. Raymond; Brouillette, Robert M.; Foil, Heather; Davis, Allison B.; Greenway, Frank L.; Johnson, William D.; Martin, Corby K.

    2016-01-01

    Dementia is a chronic condition in the elderly and depression is often a concurrent symptom. As populations continue to age, accessible and useful tools to screen for cognitive function and its associated symptoms in elderly populations are needed. The aim of this study was to test the reliability and validity of a new internet-based assessment battery for screening mood and cognitive function in an elderly population. Specifically, the Helping Hand Technology (HHT) assessments for depression (HHT-D) and global cognitive function (HHT-G) were evaluated in a sample of 57 elderly participants (22 male, 35 female) aged 59–85 years. The study sample was categorized into three groups: 1) dementia (n = 8; Mini-Mental State Exam (MMSE) score 10–24), 2) mild cognitive impairment (n = 24; MMSE score 25–28), and 3) control (n = 25; MMSE score 29–30). Test-retest reliability (Pearson correlation coefficient, r) and internal consistency reliability (Cronbach’s alpha, α) of the HHT-D and HHT-G were assessed. Validity of the HHT-D and HHT-G was tested via comparison (Pearson r) to commonly used pencil-and-paper based assessments: HHT-D versus the Geriatric Depression Scale (GDS) and HHT-G versus the MMSE. Good test-retest (r = 0.80; p < 0.0001) and acceptable internal consistency reliability (α = 0.73) of the HHT-D were established. Moderate support for the validity of the HHT-D was obtained (r = 0.60 between the HHT-D and GDS; p < 0.0001). Results indicated good test-retest (r = 0.87; p < 0.0001) and acceptable internal consistency reliability (α = 0.70) of the HHT-G. Validity of the HHT-G was supported (r = 0.71 between the HHT-G and MMSE; p < 0.0001). In summary, the HHT-D and HHT-G were found to be reliable and valid computerized assessments to screen for depression and cognitive status, respectively, in an elderly sample. PMID:27589529

  3. The Italian version of the Mouth Handicap in Systemic Sclerosis scale (MHISS) is valid, reliable and useful in assessing oral health-related quality of life (OHRQoL) in systemic sclerosis (SSc) patients.

    PubMed

    Maddali Bongi, S; Del Rosso, A; Miniati, I; Galluccio, F; Landi, G; Tai, G; Matucci-Cerinic, M

    2012-09-01

    In systemic sclerosis (SSc), mouth and face involvement leads to problems in oral health-related quality of life (OHRQoL). Mouth Handicap in Systemic Sclerosis scale (MHISS) is a 12-item questionnaire specifically quantifying mouth disability in SSc, organized in 3 subscales. Our aim was to validate Italian version of MHISS, by assessing its test-retest reliability and internal and external consistency in Italian SSc patients. Forty SSc patients (7 dSSc, 33 lSSc; age and disease duration: 57.27 ± 11.41, 9.4 ± 4.4 years; 22 with sicca syndrome) were evaluated with MHISS. MHISS was translated following a forward-backward translation procedure, with independent translations and counter-translation. Test-retest reliability was evaluated, comparing the results of two administrations, with intraclass correlation coefficient (ICC). Internal consistency was assessed by Cronbach's α and external consistency by comparison with mouth opening. MHISS has a good test-retest reliability (ICC: 0.93) and internal consistency (Cronbach's α:0.99). A good external consistency was confirmed by correlation with mouth opening (rho: -0,3869, p: 0.0137). Total MHISS score was 17.65 ± 5.20, with scores of subscale 1 (reduced mouth opening) of 6.60 ± 2.85 and scores of subscales 2 (sicca syndrome) and 3 (aesthetic concerns) of 7.82 ± 2.59 and 3.22 ± 1.14. Total and subscale 2 scores are higher in dSSc than in lSSc. This result may be due to the higher presence of sicca syndrome in dSSc than in lSSc (p = 0.0109). Our results support validity and reliability in Italian SSc patients of MHISS, specifically measuring SSc OHRQoL.

  4. Reliability of the special support system for sitting pressure redistribution

    PubMed Central

    Lee, Sang-Heon

    2016-01-01

    [Purpose] This study investigated the reliability of the Special Support System. [Subjects and Methods] Eighteen female and 14 male volunteers participated in this study. Participants were asked to sit on the Special Support System with their chins tucked in, spines straight, pelvis neutrally positioned, and their hands placed on their thighs. They were also asked to flex their hips, knees, and ankles to approximately 90 degrees and to put their feet flat on the floor. The total contact area, mean total pressure, as well as mean and peak pressures of each quadrant were each measured 15 times. Test-retest reliability was analyzed for inflated air pressure, and pressure redistribution values by using intraclass correlation coefficients. [Results] The intraclass correlation coefficient was greater than 0.89 for inflated air pressure and greater than 0.92 for total contact area, mean total pressure, and each quadrant’s mean and peak pressure. [Conclusion] The findings suggest that the Special Support System is reliable and can be used as an alternative method for redistributing sitting pressure. PMID:28174458

  5. Reliability and validity of communication skills questionnaire (CSQ).

    PubMed

    Takahashi, Megumi; Tanaka, Katsutoshi; Miyaoka, Hitoshi

    2006-04-01

    A new and easy evaluation method of communication skills has been developed using the Communication Skills Questionnaire (CSQ), which can be self-administered or administered by family members and medical staff. The reliability and validity of this CSQ were evaluated. Eighty-seven patients with mental disorders and 100 normal controls participated in a self-rating evaluation of the CSQ, and 55 family members and four medical personnel also participated in objective rating. The CSQ contained 29 items and these items were divided into three categories: cooperative skills (17 items), assertive skills (six items) and general communication skills (six items, mainly non-verbal skills). Internal consistencies of all groups were between 0.91 and 0.97. Test-retest reliability values for patients, family members and medical staff were between 0.90 and 0.95. Interrater reliability of medical staff was 0.73. The total scores had a moderate positive correlation with Global Assessment of Functioning (GAF) score and doctor's impression of communication skill evaluated on a 10-point scale. The patient group had a lower CSQ score than that of controls and the score differences between controls and patients with schizophrenia, mood disorders or eating disorders were statistically significant. This questionnaire is a good psychometric method of evaluating the communication skills of patients.

  6. Reliability of an interactive computer program for advance care planning.

    PubMed

    Schubart, Jane R; Levi, Benjamin H; Camacho, Fabian; Whitehead, Megan; Farace, Elana; Green, Michael J

    2012-06-01

    Despite widespread efforts to promote advance directives (ADs), completion rates remain low. Making Your Wishes Known: Planning Your Medical Future (MYWK) is an interactive computer program that guides individuals through the process of advance care planning, explaining health conditions and interventions that commonly involve life or death decisions, helps them articulate their values/goals, and translates users' preferences into a detailed AD document. The purpose of this study was to demonstrate that (in the absence of major life changes) the AD generated by MYWK reliably reflects an individual's values/preferences. English speakers ≥30 years old completed MYWK twice, 4 to 6 weeks apart. Reliability indices were assessed for three AD components: General Wishes; Specific Wishes for treatment; and Quality-of-Life values (QoL). Twenty-four participants completed the study. Both the Specific Wishes and QoL scales had high internal consistency in both time periods (Knuder Richardson formula 20 [KR-20]=0.83-0.95, and 0.86-0.89). Test-retest reliability was perfect for General Wishes (κ=1), high for QoL (Pearson's correlation coefficient=0.83), but lower for Specific Wishes (Pearson's correlation coefficient=0.57). MYWK generates an AD where General Wishes and QoL (but not Specific Wishes) statements remain consistent over time.

  7. Reliability of surface EMG during sustained contractions of the quadriceps.

    PubMed

    Mathur, S; Eng, J J; MacIntyre, D L

    2005-02-01

    The purpose of this study was to determine test-retest reliability for median frequency (MDF) and amplitude of surface EMG during sustained fatiguing contractions of the quadriceps. Twenty-two healthy subjects (11 males and 11 females) were tested on two days held one week apart. Surface EMG was recorded from rectus femoris (RF), vastus lateralis (VL) and vastus medialis (VM) during sustained isometric contractions at 80% and 20% of maximal voluntary contraction (MVC) held to exhaustion. Quadriceps fatigue was described using four measures for both MDF and amplitude of EMG: initial, final, normalized final and slope. For both MDF and amplitude, the initial, final and normalized EMG showed moderate to high reliability for all three muscle groups at both contraction levels (ICC=0.59-0.88 for MDF; ICC=0.58-0.99 for amplitude). Slope of MDF and amplitude was associated with a large degree of variability and low ICCs for the 80% but not the 20% MVC. MDF and amplitude of EMG during sustained contractions of the quadriceps are reproducible; normalized final values of MDF and amplitude show better reliability than slope.

  8. UCLA Loneliness Scale (Version 3): reliability, validity, and factor structure.

    PubMed

    Russell, D W

    1996-02-01

    In this article I evaluated the psychometric properties of the UCLA Loneliness Scale (Version 3). Using data from prior studies of college students, nurses, teachers, and the elderly, analyses of the reliability, validity, and factor structure of this new version of the UCLA Loneliness Scale were conducted. Results indicated that the measure was highly reliable, both in terms of internal consistency (coefficient alpha ranging from .89 to .94) and test-retest reliability over a 1-year period (r = .73). Convergent validity for the scale was indicated by significant correlations with other measures of loneliness. Construct validity was supported by significant relations with measures of the adequacy of the individual's interpersonal relationships, and by correlations between loneliness and measures of health and well-being. Confirmatory factor analyses indicated that a model incorporating a global bipolar loneliness factor along with two method factor reflecting direction of item wording provided a very good fit to the data across samples. Implications of these results for future measurement research on loneliness are discussed.

  9. Reliable Detection of Respiratory Syncytial Virus Infection in Children for Adequate Hospital Infection Control Management

    PubMed Central

    Abels, Susanne; Nadal, David; Stroehle, Angelika; Bossart, Walter

    2001-01-01

    By using a rapid test for respiratory syncytial virus (RSV) detection (Abbott TestPack RSV), a number of patients were observed, showing repeatedly positive results over a period of up to 10 weeks. A prospective study was initiated to compare the rapid test with an antigen capture enzyme immunoassay (EIA) and a nested reverse transcriptase PCR (RT-PCR) protocol for detection of RSV serotypes A and B. Only respiratory samples from children exhibiting the prolonged presence of RSV (≥5 days) as determined by the rapid test were considered. A total of 134 specimens from 24 children was investigated by antigen capture EIA and nested RT-PCR. Using RT-PCR as the reference method, we determined the RSV rapid test to have a specificity of 63% and a sensitivity of 66% and the antigen capture EIA to have a specificity of 96% and a sensitivity of 69% for acute-phase samples and the homologous virus serotype A. In 7 (29%) of 24 patients, the positive results of the RSV rapid test could not be confirmed by either nested RT-PCR or antigen capture EIA. In these seven patients a variety of other respiratory viruses were detected. For general screening the RSV rapid test was found to be a reasonable tool to get quick results. However, its lack of specificity in some patients requires confirmation by additional tests to rule out false-positive results and/or detection of other respiratory viruses. PMID:11526141

  10. Validity and reliability of a new tool to evaluate handwriting difficulties in Parkinson’s disease

    PubMed Central

    Nackaerts, Evelien; Heremans, Elke; Smits-Engelsman, Bouwien C. M.; Broeder, Sanne; Vandenberghe, Wim; Bergmans, Bruno; Nieuwboer, Alice

    2017-01-01

    Background Handwriting in Parkinson’s disease (PD) features specific abnormalities which are difficult to assess in clinical practice since no specific tool for evaluation of spontaneous movement is currently available. Objective This study aims to validate the ‘Systematic Screening of Handwriting Difficulties’ (SOS-test) in patients with PD. Methods Handwriting performance of 87 patients and 26 healthy age-matched controls was examined using the SOS-test. Sixty-seven patients were tested a second time within a period of one month. Participants were asked to copy as much as possible of a text within 5 minutes with the instruction to write as neatly and quickly as in daily life. Writing speed (letters in 5 minutes), size (mm) and quality of handwriting were compared. Correlation analysis was performed between SOS outcomes and other fine motor skill measurements and disease characteristics. Intrarater, interrater and test-retest reliability were assessed using the intraclass correlation coefficient (ICC) and Spearman correlation coefficient. Results Patients with PD had a smaller (p = 0.043) and slower (p<0.001) handwriting and showed worse writing quality (p = 0.031) compared to controls. The outcomes of the SOS-test significantly correlated with fine motor skill performance and disease duration and severity. Furthermore, the test showed excellent intrarater, interrater and test-retest reliability (ICC > 0.769 for both groups). Conclusion The SOS-test is a short and effective tool to detect handwriting problems in PD with excellent reliability. It can therefore be recommended as a clinical instrument for standardized screening of handwriting deficits in PD. PMID:28253374

  11. Reliability and Validity of Measures of Impulsive Choice and Impulsive Action in Smokers Trying to Quit

    PubMed Central

    McCarthy, Danielle E.; Bold, Krysten W.; Minami, Haruka; Yeh, Vivian M.; Rutten, Emily; Nadkarni, Shruti G.; Chapman, Gretchen B.

    2016-01-01

    Cross-sectional research suggests that smokers are more impulsive than are non-smokers, but few studies have examined relations between impulsiveness and later success in quitting smoking. The purpose of this study was to investigate the reliability and predictive validity of facets of impulsiveness in adult smokers trying to quit. Baseline behavioral measures of impulsive choice (assessed with a delay discounting task) and impulsive action (assessed with a measure of behavioral disinhibition) were used as predictors of smoking cessation success over 12 weeks. The sample included 116 adult (18 years old or older) daily smokers from central New Jersey. Impulsive choice, impulsive action, and self-reported impulsiveness were not significantly related to one another at baseline. Impulsive choice had high test-retest reliability from pre- to post-quit, whereas impulsive action was less stable. Test-retest reliability from pre-quit to three weeks post-quit was moderated by achievement of seven-day abstinence. Baseline impulsive action was significantly negatively related to quitting for at least one day in the first two weeks of a quit attempt and of prolonged abstinence (no relapse over the next 10 weeks). Baseline impulsive choice was robustly associated with biochemically verified seven-day point-prevalence abstinence 12 weeks post-quit, such that those with lower delay discounting were more likely to achieve abstinence. Facets of impulsiveness appear to function largely independently in adult smokers, as indicated by their lack of inter-correlation, differential stability, and differential relations with abstinence. Impulsive action may impede initial quitting, whereas impulsive choice may be an obstacle to maintaining lasting abstinence. PMID:26751623

  12. Reliability of Triaxial Accelerometry for Measuring Load in Men's Collegiate Ice-Hockey.

    PubMed

    Van Iterson, Erik H; Fitzgerald, John S; Dietz, Calvin C; Snyder, Eric M; Peterson, Ben J

    2016-08-18

    Wearable microsensor technology incorporating triaxial accelerometry is used to quantify an index of mechanical stress associated with sport-specific movements termed PlayerLoad™. The test-retest reliability of PlayerLoad™ in the environmental-setting of ice-hockey is unknown. The primary aim of this study was to quantify the test-retest reliability of PlayerLoad™ in ice-hockey players during performance of tasks simulating game-conditions. Division I collegiate male ice-hockey players (N=8) wore Catapult Optimeye S5 monitors during repeat performance of 9 ice-hockey tasks simulating game-conditions. Ordered ice-hockey tasks during repeated bouts included: acceleration (forward/backward), 60% top-speed, top-speed (forward/backward), repeated shift circuit, ice-coasting, slap-shot, and bench-sitting. Coefficient of variation (CV), intraclass correlation coefficient (ICC), and minimum differences (MD) were used to assess PlayerLoad™ reliability. Test-retest CVs and ICCs of PlayerLoad™ were: Forward (8.6, 0.54) or backward (13.8, 0.78) acceleration, 60% top-speed (2.2, 0.96), forward (7.5, 0.79) or backwards (2.8, 0.96) top-speed, repeated-shift test (26.6, 0.95), slap-shot (3.9, 0.68), coasting (3.7, 0.98), and bench-sitting (4.1, 0.98), respectively. Raw differences between bouts were not significant for ice-hockey tasks (P>0.05). For each task, between bout raw differences were lower versus MD: Forward (0.06 vs. 0.35) or backward (0.07 vs. 0.36) acceleration, 60% top-speed (0.00 vs. 0.06), forward (0.03 vs. 0.20) or backwards (0.02 vs. 0.09) top-speed, repeated-shift test (0.18 vs. 0.64), slap-shot (0.02 vs. 0.10), coasting (0.00 vs. 0.10), and bench-sitting (0.01 vs. 0.11), respectively. These data suggest PlayerLoad™ demonstrates moderate-to-large test-retest reliability in the environmental-setting of male Division I collegiate ice-hockey. Without previously testing reliability, these data are important as PlayerLoad™ is routinely quantified in

  13. Reliability and agreement in student ratings of the class environment.

    PubMed

    Nelson, Peter M; Christ, Theodore J

    2016-09-01

    The current study estimated the reliability and agreement of student ratings of the classroom environment obtained using the Responsive Environmental Assessment for Classroom Teaching (REACT; Christ, Nelson, & Demers, 2012; Nelson, Demers, & Christ, 2014). Coefficient alpha, class-level reliability, and class agreement indices were evaluated as each index provides important information for different interpretations and uses of student rating scale data. Data for 84 classes across 29 teachers in a suburban middle school were sampled to derive reliability and agreement indices for the REACT subscales across 4 class sizes: 25, 20, 15, and 10. All participating teachers were White and a larger number of 6th-grade classes were included (42%) relative to 7th- (33%) or 8th- (23%) grade classes. Teachers were responsible for a variety of content areas, including language arts (26%), science (26%), math (20%), social studies (19%), communications (6%), and Spanish (3%). Coefficient alpha estimates were generally high across all subscales and class sizes (α = .70-.95); class-mean estimates were greatly impacted by the number of students sampled from each class, with class-level reliability values generally falling below .70 when class size was reduced from 25 to 20. Further, within-class student agreement varied widely across the REACT subscales (mean agreement = .41-.80). Although coefficient alpha and test-retest reliability are commonly reported in research with student rating scales, class-level reliability and agreement are not. The observed differences across coefficient alpha, class-level reliability, and agreement indices provide evidence for evaluating students' ratings of the class environment according to their intended use (e.g., differentiating between classes, class-level instructional decisions). (PsycINFO Database Record

  14. Reliability and Validity Assessment of a Linear Position Transducer

    PubMed Central

    Garnacho-Castaño, Manuel V.; López-Lastra, Silvia; Maté-Muñoz, José L.

    2015-01-01

    The objectives of the study were to determine the validity and reliability of peak velocity (PV), average velocity (AV), peak power (PP) and average power (AP) measurements were made using a linear position transducer. Validity was assessed by comparing measurements simultaneously obtained using the Tendo Weightlifting Analyzer Systemi and T-Force Dynamic Measurement Systemr (Ergotech, Murcia, Spain) during two resistance exercises, bench press (BP) and full back squat (BS), performed by 71 trained male subjects. For the reliability study, a further 32 men completed both lifts using the Tendo Weightlifting Analyzer Systemz in two identical testing sessions one week apart (session 1 vs. session 2). Intraclass correlation coefficients (ICCs) indicating the validity of the Tendo Weightlifting Analyzer Systemi were high, with values ranging from 0.853 to 0.989. Systematic biases and random errors were low to moderate for almost all variables, being higher in the case of PP (bias ±157.56 W; error ±131.84 W). Proportional biases were identified for almost all variables. Test-retest reliability was strong with ICCs ranging from 0.922 to 0.988. Reliability results also showed minimal systematic biases and random errors, which were only significant for PP (bias -19.19 W; error ±67.57 W). Only PV recorded in the BS showed no significant proportional bias. The Tendo Weightlifting Analyzer Systemi emerged as a reliable system for measuring movement velocity and estimating power in resistance exercises. The low biases and random errors observed here (mainly AV, AP) make this device a useful tool for monitoring resistance training. Key points This study determined the validity and reliability of peak velocity, average velocity, peak power and average power measurements made using a linear position transducer The Tendo Weight-lifting Analyzer Systemi emerged as a reliable system for measuring movement velocity and power. PMID:25729300

  15. Assessing Households Preparedness for Earthquakes: An Exploratory Study in the Development of a Valid and Reliable Persian-version Tool

    PubMed Central

    Ardalan, Ali; Sohrabizadeh, Sanaz

    2016-01-01

    Introduction: Iran is placed among countries suffering from the highest number of earthquake casualties. Household preparedness, as one component of risk reduction efforts, is often supported in quake-prone areas. In Iran, lack of a valid and reliable household preparedness tool was reported by previous disaster studies. This study is aimed to fill this gap by developing a valid and reliable tool for assessing household preparedness in the event of an earthquake. Methods: This survey was conducted through three phases including literature review and focus group discussions with the participation of eight key informants, validity measurements and reliability measurements. Field investigation was completed with the participation of 450 households within three provinces of Iran. Content validity, construct validity, the use of factor analysis; internal consistency using Cronbach's alpha coefficient, and test-retest reliability were carried out to develop the tool. Results: Based on the CVIs, ranging from 0.80 to 0.100, and exploratory factor analysis with factor loading of more than 0.5, all items were valid. The amount of Cronbach's alpha (0.7) and test-retest examination by Spearman correlations indicated that the scale was also reliable. The final instrument consisted of six categories and 18 questions including actions at the time of earthquakes, nonstructural safety, structural safety, hazard map, communications, drill, and safety skills. Conclusion: Using a Persian-version tool that is adjusted to the socio-cultural determinants and native language may result in more trustful information on earthquake preparedness. It is suggested that disaster managers and researchers apply this tool in their future household preparedness projects. Further research is needed to make effective policies and plans for transforming preparedness knowledge into behavior. PMID:26981326

  16. Reliable change indices and standardized regression-based change score norms for evaluating neuropsychological change in children with epilepsy.

    PubMed

    Busch, Robyn M; Lineweaver, Tara T; Ferguson, Lisa; Haut, Jennifer S

    2015-06-01

    Reliable change indices (RCIs) and standardized regression-based (SRB) change score norms permit evaluation of meaningful changes in test scores following treatment interventions, like epilepsy surgery, while accounting for test-retest reliability, practice effects, score fluctuations due to error, and relevant clinical and demographic factors. Although these methods are frequently used to assess cognitive change after epilepsy surgery in adults, they have not been widely applied to examine cognitive change in children with epilepsy. The goal of the current study was to develop RCIs and SRB change score norms for use in children with epilepsy. Sixty-three children with epilepsy (age range: 6-16; M=10.19, SD=2.58) underwent comprehensive neuropsychological evaluations at two time points an average of 12 months apart. Practice effect-adjusted RCIs and SRB change score norms were calculated for all cognitive measures in the battery. Practice effects were quite variable across the neuropsychological measures, with the greatest differences observed among older children, particularly on the Children's Memory Scale and Wisconsin Card Sorting Test. There was also notable variability in test-retest reliabilities across measures in the battery, with coefficients ranging from 0.14 to 0.92. Reliable change indices and SRB change score norms for use in assessing meaningful cognitive change in children following epilepsy surgery are provided for measures with reliability coefficients above 0.50. This is the first study to provide RCIs and SRB change score norms for a comprehensive neuropsychological battery based on a large sample of children with epilepsy. Tables to aid in evaluating cognitive changes in children who have undergone epilepsy surgery are provided for clinical use. An Excel sheet to perform all relevant calculations is also available to interested clinicians or researchers.

  17. Evaluation of the field tests of flexibility of the lower extremity: reliability and the concurrent and factorial validity.

    PubMed

    Bozic, Predrag R; Pazin, Nemanja R; Berjan, Bobana B; Planic, Nenad M; Cuk, Ivan D

    2010-09-01

    The purpose of this study was to evaluate the standard field tests of flexibility of the lower extremity through their (a) intratrial and test-retest reliability, (b) concurrent validity with respect to a high-precision 3D system for kinematic recording, and (c) factorial validity. Physically active men (n = 84) were tested over 2 separate sessions by means of standard simple devices (kinanthropometry, ruler, and protractor) on the following flexibility tests: leg raise in a supine position, hip abduction test, single-legged knee bend (SLKB), sideward leg splits (SdLS), sit and reach (SR), sideways leg splits, and lengthwise leg splits. Additionally, 17 participants were simultaneously tested by means of a laboratory 3D kinematic analysis system. Most of the tests demonstrated high intratrial and test-retest reliability and concurrent validity. The exceptions were SLKB and SR tests that revealed not only a somewhat lower reliability but also a lower concurrent validity. For estimation of factorial validity, we applied a principal component analysis of the intercorrelations among the evaluated flexibility tests that revealed a single extracted principal component. Strong mutual relationships among them also suggest that very few of them, if not a single one, should be applied within the standard batteries of physical performance tests. We particularly recommend using SdLS over the most frequently used SR not only because of its relatively high reliability and validity but also because of its postural properties. Finally, we conclude that most of the standard field tests of flexibility of the lower extremity based on using inexpensive field equipment could be both reliable and valid and, therefore, justified for use in routine testing.

  18. THE RELIABILITY OF MAGNETIC RESONANCE ELASTOGRAPHY USING MULTISLICE 2D SPIN-ECHO ECHO-PLANAR IMAGING (SE-EPI) AND 3D INVERSION RECONSTRUCTION FOR ASSESSING RENAL STIFFNESS

    PubMed Central

    Low, Gavin; Owen, Nicola E.; Joubert, Ilse; Patterson, Andrew J.; Graves, Martin J.; Glaser, Kevin J.; Alexander, Graeme J.M.; Lomas, David J.

    2015-01-01

    PURPOSE To evaluate the reliability of MRE using a spin-echo echo-planar imaging (SE-EPI) renal MRE technique in healthy volunteers MATERIALS AND METHODS Institutional review board approved prospective study in which all participants provided written informed consent. Sixteen healthy volunteers comprising seven males and nine females with a median age of 35 years (age range: 23 to 59 years) were included. Coronal 90-Hz and 60-Hz MRE acquisitions were performed twice within a 30-minute interval between examinations. Renal MRE reliability was assessed by i) test-retest repeatability, and ii) inter-rater agreement between two independent readers. The MRE-measured averaged renal stiffness values were evaluated using: intraclass correlation coefficient (ICC), Bland-Altman and the within-subject coefficient of variation (COV). RESULTS For test-retest repeatability, Bland-Altman showed a mean stiffness difference between examinations of 0.07 kPa (95% limits of agreement: −1.41, 1.54) at 90-Hz and 0.01 kPa (95% limits of agreement: −0.51, 0.53) at 60-Hz. Coefficient of repeatability was 1.47 kPa and 0.52 kPa at 90-Hz and 60-Hz, respectively. The within-subject COV was 13.6% and 7.7% at 90-Hz and 60-Hz, respectively. ICC values were 0.922 and 0.907 for test-retest repeatability and 0.998 and 0.989 for inter-rater agreement, respectively (p < 0.001). CONCLUSION SE-EPI renal MRE is a reliable technique PMID:25537823

  19. Development and Validation of the Index of Race-Related Stress (IRRS).

    ERIC Educational Resources Information Center

    Utsey, Shawn O.; Ponterotto, Joseph G.

    1996-01-01

    Describes the development and validation of a measure of the stress experienced by African Americans as a result of daily encounters with racism and discrimination. The scale has adequate indexes of internal consistency and fair-to-adequate estimates of test-retest stability. Several other factors also indicated the measure's reliability. (RJM)

  20. The Validity and Reliability of Turkish Version of the Chemotherapy-induced Taste Alteration Scale (CiTAS).

    PubMed

    Sozeri, Elif; Kutluturkan, Sevinc

    2016-08-11

    The study was aimed to assess the validity and reliability of the Turkish version of the Chemotherapy-induced Taste Alteration Scale (CiTAS), and was conducted on adult patients receiving chemotherapy (N = 184) in the Chemotherapy Unit and Hematology Clinic (Outpatient) of a university hospital between December 2013 and May 2014. The results showed that the Cronbach's alpha coefficient (.869) was satisfactory. The alpha value was .89 for the Decline in Basic Taste subscale, .70 for Discomfort subscale, .82 for Phantogeusia and Parageusia subscale, and .72 for General Taste Alterations subscale. The coefficients of the relationship between test-retest reliability results were significantly high (r = .939, n = 28). The Turkish version of the CiTAS was a sufficient and suitable tool in evaluating the taste alterations associated with chemotherapy.

  1. A Chinese version of the Rheumatology Attitudes Index is a valid and reliable measure of learned helplessness in patients with SLE.

    PubMed

    Thumboo, J; Feng, P H; Chan, S P; Boey, M L; Thio, S T; Fong, K Y

    2002-01-01

    Despite the prognostic importance of learned helplessness (LH) in rheumatic diseases, there are no validated measures of LH in Chinese or other Asian languages. We therefore assessed the validity of a Chinese translation of the Rheumatology Attitudes Index (CRAI; a widely used measure of LH) and its Helplessness (CHS) and Internality (CIS) subscales in patients with SLE. Chinese-speaking SLE patients (n = 69) completed identical, self-administered questionnaires containing the CRAI and assessing demographic/socio-economic variables twice within 2 weeks. SLE activity, damage and quality of life were assessed using the BILAG, SLICC/ACR Damage Index and SF-36 respectively. Scale psychometric properties were assessed through Cronbach's alpha, intra-class correlations, quantifying test-retest differences, factor analysis and known-groups construct validity. Internal consistency and reliability were acceptable, with Cronbach's alpha for the CHS, CIS and CRAI being 0.70, 0.69 and 0.74, respectively. Mean differences in test-retest scores spanned 1.6-2.4% of possible scale ranges and intra class correlations ranged from 0.72 to 0.88. Factor analysis identified two major factors corresponding to the CHS and CIS subscales of the CRAI. Eight of 10 a priori hypotheses relating the CRAI and CHS to demographic, disease and quality of life variables were confirmed, supporting the construct validity of these scales. The CRAI and its helplessness subscale are valid and reliable measures of learned helplessness in Chinese-speaking SLE patients.

  2. Validity and reliability of the Nintendo Wii Balance Board for assessment of standing balance.

    PubMed

    Clark, Ross A; Bryant, Adam L; Pua, Yonghao; McCrory, Paul; Bennell, Kim; Hunt, Michael

    2010-03-01

    Impaired standing balance has a detrimental effect on a person's functional ability and increases their risk of falling. There is currently no validated system which can precisely quantify center of pressure (COP), an important component of standing balance, while being inexpensive, portable and widely available. The Wii Balance Board (WBB) fits these criteria, and we examined its validity in comparison with the 'gold standard'-a laboratory-grade force platform (FP). Thirty subjects without lower limb pathology performed a combination of single and double leg standing balance tests with eyes open or closed on two separate occasions. Data from the WBB were acquired using a laptop computer. The test-retest reliability for COP path length for each of the testing devices, including a comparison of the WBB and FP data, was examined using intraclass correlation coefficients (ICC), Bland-Altman plots (BAP) and minimum detectable change (MDC). Both devices exhibited good to excellent COP path length test-retest reliability within-device (ICC=0.66-0.94) and between-device (ICC=0.77-0.89) on all testing protocols. Examination of the BAP revealed no relationship between the difference and the mean in any test, however the MDC values for the WBB did exceed those of the FP in three of the four tests. These findings suggest that the WBB is a valid tool for assessing standing balance. Given that the WBB is portable, widely available and a fraction of the cost of a FP, it could provide the average clinician with a standing balance assessment tool suitable for the clinical setting.

  3. Reliability of metatarsophalangeal and ankle joint torque measurements by an innovative device.

    PubMed

    Man, Hok-Sum; Leung, Aaron Kam-Lun; Cheung, Jason Tak-Man; Sterzing, Thorsten

    2016-07-01

    The toe flexor muscles maintain body balance during standing and provide push-off force during walking, running, and jumping. Additionally, they are important contributing structures to maintain normal foot function. Thus, weakness of these muscles may cause poor balance, inefficient locomotion and foot deformities. The quantification of metatarsophalangeal joint (MPJ) stiffness is valuable as it is considered as a confounding factor in toe flexor muscles function. MPJ and ankle joint stiffness measurement is still largely depended on manual skills as current devices do not have good control on alignment, angular joint speed and displacement during measurement. Therefore, this study introduces an innovative dynamometer and protocol procedures for MPJ and ankle Joint torque measurement with precise and reliable foot alignment, angular joint speed and displacement control. Within-day and between-day test-retest experiments on MPJ and ankle joint torque measurement were conducted on ten and nine healthy male subjects respectively. The mean peak torques of MPJ and ankle joint of between-day and within-day measurement were 1.50±0.38Nm/deg and 1.19±0.34Nm/deg. The corresponding torques of the ankle joint were 8.24±2.20Nm/deg and 7.90±3.18Nm/deg respectively. Intraclass-correlation coefficients (ICC) of averaged peak torque of both joints of between-day and within-day test-retest experiments were ranging from 0.91 to 0.96, indicating the innovative device is systematic and reliable for the measurements and can be used for multiple scientific and clinical purposes.

  4. The Persian Version of a Participation Scale: Is It Valid and Reliable Enough for Use among Iranian Patients with Multiple Sclerosis?

    PubMed Central

    Vazirinejad, Reza; Joorian, Javad; Taghavi, Mohammad Mohsen; Lilley, Jeanette M.

    2015-01-01

    Background and Purpose The aim of this study was to determine the face and criterion validity, stability reliability, and internal consistency of the Persian version of the Impact on Participation and Autonomy (IPA-p) scale among Iranian people with multiple sclerosis (MS). Methods Trained experts interviewed 364 MS patients and their relatives to assess the criterion validity, stability reliability, and internal consistency of the IPA-p scale. Ten specialists from different disciplines were also recruited to assess its face validity. A consent form was completed by the patients and their relatives. Internal consistency reliability was measured using Cronbach's alpha and stability reliability was assessed using interclass correlation coefficients (ICCs). The test-retest method was used to detect the reliability of the questioner. The study subjects completed the IPA-p scale on two occasions separated by an interval of 30-45 days. Study checklists were also used to assess the face validity, stability reliability, and internal consistency of the IPA-p scale. Results About 50% of the respondents reported their perceived overall participation to be "good" or "very good" and 60% of the specialists rated the ability of the IPA-p scale to measure what it was designed for as "excellent." Spearman correlation coefficients were >0.8 for all but one IPA-p domain. Cronbach's alpha between the mean IPA-p scale scores achieved on two separate occasions ranged from 0.858 to 0.913. The highest and lowest internal consistencies belonged to the "social relationships" and "education and learning" domains, respectively. The test-retest ICCs for the nine domains were between 0.789 and 0.919, and all were significant at p<0.001. Conclusions The IPA-p questionnaire can be considered a valid and reliable instrument for assessing self-reported participation among Iranian MS patients. PMID:25851894

  5. Reliability and Validity of EN-TreeM Dynamometer for Measurement of Shoulder Rotator Strength in Volleyball Players

    PubMed Central

    Kaleem; Moiz, Jamal Ali; Iqbal, Mohd; Verma, Shalini

    2016-01-01

    Introduction Volleyball involves repeated forceful arm actions that produce a high incidence of shoulder injury. Shoulder rotator strength ratio is an important predictor of the likelihood of shoulder injury, especially, secondary shoulder impingement and instability. Therefore, assessment of muscle strength of external and internal rotators of shoulder is imperative to establish the profiles of shoulder rotator performance, strength ratios, and shoulder mobility of volleyball players. Aim To establish reliability and validity of EN-TreeM dynamometer for the measurement of shoulder rotators strength in volleyball players. Materials and Methods Thirty male volleyball players aged 18-24 years, mean height 1.7m, weight 69.8 Kg and BMI 23.1 participated in the study. They performed 1RM (one repetition maximum) estimation protocols using EN-TreeM dynamometer and free weights for shoulder rotators, to investigate its concurrent validity. A retest using the same protocol was performed 48 hours later to assess test-retest reliability of the EN-TreeM dynamometer. Results The results yielded excellent test-retest reliability (ICC0.96) and internal consistency (Cronbach’s alpha0.98) for both internal and external rotators. The concurrent validity was established using Pearson correlation coefficient (internal rotator r=0.45, p=0.01;External rotator r=0.38, p=0.03). Conclusion The findings establish the reliability and concurrent validity of EN-TreeM dynamometer for the quantification of shoulder rotators strength. Based on these findings in volleyball players, EN-TreeM dynamometer can be used with confidence as an instrument for assessing muscle performance (strength). Additionally, it may also be used for monitoring changes due to rehabilitation interventions in shoulder injuries. PMID:27134986

  6. Reliability and validity of the March of dimes preconception/prenatal family health history questionnaire: The Persian version.

    PubMed

    Mashhadi Abdolahi, Hossein; Kargar Maher, Mohammad Hassan; Karamouz, Majid; Khosroshahi, Hossein; Dastgiri, Saeed

    2016-05-01

    In recent years, there has been a remarkable gap between rapid advancements in genetic technology and public health practice. Looking at the familial health history may bridge this gap for easier and cheaper diagnosis and prevention of congenital anomalies. The aim of this study was to validate and culturally adapt the March of Dimes Preconception/Prenatal Family Health History Questionnaire for the Iranian population. After obtaining written permission from March of Dimes, the translation-back translation of the original questionnaire was performed. The content validity was assessed by a team of 12 experts. Based on a sample of 50 general practitioners and 100 subjects referred to health centers from September to November 2014 in Tabriz, Iran, test-retest reliability and inter-rater reliability were evaluated by Kappa and Intra-class Correlation Coefficient (ICC). Content validity of the Persian version of the questionnaire was confirmed according to the modified kappa value above 0.76 for all the items included in this tool. Inter-rater reliability assessment yielded a kappa value between 0.62 and 0.92 for variables with dichotomous measurement scales and ICC ranged from 0.6 to 0.9 for variables with numeric scales. Test-retest re-administration produced kappa ranging from 0.62 to 0.92 for variables with dichotomous measurement scales and ICC from 0.6 to 0.9 for variables with numeric scales. The Persian version of the March of Dimes preconception/prenatal family health history questionnaire showed acceptable reliability and validity and may be used as a simple tool for the detection of risk factors of birth defects in Iranian population.

  7. Adaptation and Assessment of Reliability and Validity of the Greek Version of the Ohkuma Questionnaire for Dysphagia Screening

    PubMed Central

    Papadopoulou, Soultana L.; Exarchakos, Georgios; Christodoulou, Dimitrios; Theodorou, Stavroula; Beris, Alexandre; Ploumis, Avraam

    2016-01-01

    Introduction The Ohkuma questionnaire is a validated screening tool originally used to detect dysphagia among patients hospitalized in Japanese nursing facilities. Objective The purpose of this study is to evaluate the reliability and validity of the adapted Greek version of the Ohkuma questionnaire. Methods Following the steps for cross-cultural adaptation, we delivered the validated Ohkuma questionnaire to 70 patients (53 men, 17 women) who were either suffering from dysphagia or not. All of them completed the questionnaire a second time within a month. For all of them, we performed a bedside and VFSS study of dysphagia and asked participants to undergo a second VFSS screening, with the exception of nine individuals. Statistical analysis included measurement of internal consistency with Cronbach's α coefficient, reliability with Cohen's Kappa, Pearson's correlation coefficient and construct validity with categorical components, and One-Way Anova test. Results According to Cronbach's α coefficient (0.976) for total score, there was high internal consistency for the Ohkuma Dysphagia questionnaire. Test-retest reliability (Cohen's Kappa) ranged from 0.586 to 1.00, exhibiting acceptable stability. We also estimated the Pearson's correlation coefficient for the test-retest total score, which reached high levels (0.952; p = 0.000). The One-Way Anova test in the two measurement times showed statistically significant correlation in both measurements (p = 0.02 and p = 0.016). Conclusion The adapted Greek version of the questionnaire is valid and reliable and can be used for the screening of dysphagia in the Greek-speaking patients. PMID:28050209

  8. Bobo Clown Aggression in Childhood: Environment, Not Genes.

    ERIC Educational Resources Information Center

    Plomin, Robert; And Others

    1981-01-01

    Twin children were videotaped hitting an inflated clown figure. Three behaviors (number of hits, intensity of hits, and number of quadrants hit) showed adequate response characteristics, rater reliability, and test-retest reliability. Twin analyses of the three behavioral ratings yielded no evidence of hereditary influence. (Author)

  9. Reliability training

    NASA Technical Reports Server (NTRS)

    Lalli, Vincent R. (Editor); Malec, Henry A. (Editor); Dillard, Richard B.; Wong, Kam L.; Barber, Frank J.; Barina, Frank J.

    1992-01-01

    Discussed here is failure physics, the study of how products, hardware, software, and systems fail and what can be done about it. The intent is to impart useful information, to extend the limits of production capability, and to assist in achieving low cost reliable products. A review of reliability for the years 1940 to 2000 is given. Next, a review of mathematics is given as well as a description of what elements contribute to product failures. Basic reliability theory and the disciplines that allow us to control and eliminate failures are elucidated.

  10. Person Reliability

    ERIC Educational Resources Information Center

    Lumsden, James

    1977-01-01

    Person changes can be of three kinds: developmental trends, swells, and tremors. Person unreliability in the tremor sense (momentary fluctuations) can be estimated from person characteristic curves. Average person reliability for groups can be compared from item characteristic curves. (Author)

  11. Reliability and Validity of a Novel Internet-Based Battery to Assess Mood and Cognitive Function in the Elderly.

    PubMed

    Myers, Candice A; Keller, Jeffrey N; Allen, H Raymond; Brouillette, Robert M; Foil, Heather; Davis, Allison B; Greenway, Frank L; Johnson, William D; Martin, Corby K

    2016-10-18

    Dementia is a chronic condition in the elderly and depression is often a concurrent symptom. As populations continue to age, accessible and useful tools to screen for cognitive function and its associated symptoms in elderly populations are needed. The aim of this study was to test the reliability and validity of a new internet-based assessment battery for screening mood and cognitive function in an elderly population. Specifically, the Helping Hand Technology (HHT) assessments for depression (HHT-D) and global cognitive function (HHT-G) were evaluated in a sample of 57 elderly participants (22 male, 35 female) aged 59-85 years. The study sample was categorized into three groups: 1) dementia (n = 8; Mini-Mental State Exam (MMSE) score 10-24), 2) mild cognitive impairment (n = 24; MMSE score 25-28), and 3) control (n = 25; MMSE score 29-30). Test-retest reliability (Pearson correlation coefficient, r) and internal consistency reliability (Cronbach's alpha, α) of the HHT-D and HHT-G were assessed. Validity of the HHT-D and HHT-G was tested via comparison (Pearson r) to commonly used pencil-and-paper based assessments: HHT-D versus the Geriatric Depression Scale (GDS) and HHT-G versus the MMSE. Good test-retest (r = 0.80; p < 0.0001) and acceptable internal consistency reliability (α= 0.73) of the HHT-D were established. Moderate support for the validity of the HHT-D was obtained (r = 0.60 between the HHT-D and GDS; p < 0.0001). Results indicated good test-retest (r = 0.87; p < 0.0001) and acceptable internal consistency reliability (α= 0.70) of the HHT-G. Validity of the HHT-G was supported (r = 0.71 between the HHT-G and MMSE; p < 0.0001). In summary, the HHT-D and HHT-G were found to be reliable and valid computerized assessments to screen for depression and cognitive status, respectively, in an elderly sample.

  12. 40 CFR 716.25 - Adequate file search.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 31 2011-07-01 2011-07-01 false Adequate file search. 716.25 Section 716.25 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) TOXIC SUBSTANCES CONTROL ACT HEALTH AND SAFETY DATA REPORTING General Provisions § 716.25 Adequate file search. The scope of...

  13. 40 CFR 716.25 - Adequate file search.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 31 2014-07-01 2014-07-01 false Adequate file search. 716.25 Section 716.25 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) TOXIC SUBSTANCES CONTROL ACT HEALTH AND SAFETY DATA REPORTING General Provisions § 716.25 Adequate file search. The scope of...

  14. "Something Adequate"? In Memoriam Seamus Heaney, Sister Quinlan, Nirbhaya

    ERIC Educational Resources Information Center

    Parker, Jan

    2014-01-01

    Seamus Heaney talked of poetry's responsibility to represent the "bloody miracle", the "terrible beauty" of atrocity; to create "something adequate". This article asks, what is adequate to the burning and eating of a nun and the murderous gang rape and evisceration of a medical student? It considers Njabulo Ndebele's…

  15. 40 CFR 716.25 - Adequate file search.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 30 2010-07-01 2010-07-01 false Adequate file search. 716.25 Section... ACT HEALTH AND SAFETY DATA REPORTING General Provisions § 716.25 Adequate file search. The scope of a person's responsibility to search records is limited to records in the location(s) where the...

  16. 40 CFR 51.354 - Adequate tools and resources.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 2 2013-07-01 2013-07-01 false Adequate tools and resources. 51.354... Requirements § 51.354 Adequate tools and resources. (a) Administrative resources. The program shall maintain the administrative resources necessary to perform all of the program functions including...

  17. 40 CFR 51.354 - Adequate tools and resources.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 2 2014-07-01 2014-07-01 false Adequate tools and resources. 51.354... Requirements § 51.354 Adequate tools and resources. (a) Administrative resources. The program shall maintain the administrative resources necessary to perform all of the program functions including...

  18. 40 CFR 51.354 - Adequate tools and resources.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 2 2010-07-01 2010-07-01 false Adequate tools and resources. 51.354... Requirements § 51.354 Adequate tools and resources. (a) Administrative resources. The program shall maintain the administrative resources necessary to perform all of the program functions including...

  19. 40 CFR 51.354 - Adequate tools and resources.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 2 2011-07-01 2011-07-01 false Adequate tools and resources. 51.354... Requirements § 51.354 Adequate tools and resources. (a) Administrative resources. The program shall maintain the administrative resources necessary to perform all of the program functions including...

  20. 40 CFR 51.354 - Adequate tools and resources.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 2 2012-07-01 2012-07-01 false Adequate tools and resources. 51.354... Requirements § 51.354 Adequate tools and resources. (a) Administrative resources. The program shall maintain the administrative resources necessary to perform all of the program functions including...

  1. 9 CFR 305.3 - Sanitation and adequate facilities.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 9 Animals and Animal Products 2 2012-01-01 2012-01-01 false Sanitation and adequate facilities. 305.3 Section 305.3 Animals and Animal Products FOOD SAFETY AND INSPECTION SERVICE, DEPARTMENT OF... OF VIOLATION § 305.3 Sanitation and adequate facilities. Inspection shall not be inaugurated if...

  2. 9 CFR 305.3 - Sanitation and adequate facilities.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 9 Animals and Animal Products 2 2011-01-01 2011-01-01 false Sanitation and adequate facilities. 305.3 Section 305.3 Animals and Animal Products FOOD SAFETY AND INSPECTION SERVICE, DEPARTMENT OF... OF VIOLATION § 305.3 Sanitation and adequate facilities. Inspection shall not be inaugurated if...

  3. 9 CFR 305.3 - Sanitation and adequate facilities.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 9 Animals and Animal Products 2 2014-01-01 2014-01-01 false Sanitation and adequate facilities. 305.3 Section 305.3 Animals and Animal Products FOOD SAFETY AND INSPECTION SERVICE, DEPARTMENT OF... OF VIOLATION § 305.3 Sanitation and adequate facilities. Inspection shall not be inaugurated if...

  4. 9 CFR 305.3 - Sanitation and adequate facilities.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 9 Animals and Animal Products 2 2010-01-01 2010-01-01 false Sanitation and adequate facilities. 305.3 Section 305.3 Animals and Animal Products FOOD SAFETY AND INSPECTION SERVICE, DEPARTMENT OF... OF VIOLATION § 305.3 Sanitation and adequate facilities. Inspection shall not be inaugurated if...

  5. 9 CFR 305.3 - Sanitation and adequate facilities.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 9 Animals and Animal Products 2 2013-01-01 2013-01-01 false Sanitation and adequate facilities. 305.3 Section 305.3 Animals and Animal Products FOOD SAFETY AND INSPECTION SERVICE, DEPARTMENT OF... OF VIOLATION § 305.3 Sanitation and adequate facilities. Inspection shall not be inaugurated if...

  6. 21 CFR 201.5 - Drugs; adequate directions for use.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 21 Food and Drugs 4 2011-04-01 2011-04-01 false Drugs; adequate directions for use. 201.5 Section 201.5 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) DRUGS: GENERAL LABELING General Labeling Provisions § 201.5 Drugs; adequate directions for use....

  7. Reliability and validity of the Chinese version of the questionnaire of olfactory disorders (QOD) when used with patients having olfactory dysfunction.

    PubMed

    Yang, DaHai; Wang, Jian; Ni, DaoFeng; Liu, JianFeng; Wang, Xin

    2016-10-01

    To cross-culturally adapt the Questionnaire of olfactory disorders (QOD) into a Chinese version, and then evaluate its reliability and validity for testing patients with olfactory dysfunction. A Chinese version of the QOD was evaluated for test-retest reliability, split-half reliability, and internal consistency. The validity analysis included components of content validity and criterion-related validity, as well as comparisons between The Medical Outcomes Study's36-Item ShortForm Health Survey(SF-36)questionnaire and the WHO Quality of Life-BREF (WHOQOL-BREF)questionnaire. A total of 125 patients with olfactory dysfunction were tested, and 104 patients completed three different surveys (QOD, SF-36, and WHOQOL-BREF). The test-retest reliabilities of the QOD-Parosmia statements (QOD-P), QOD-Quality of life (QOD-QoL), and QOD-Visual simulation (QOD-VAS)sections were 0.802 (P < 0.001), 0.797 (P < 0.001), and 0.468 (P < 0.001), respectively, and the Cronbach's α coefficients of internal consistency were 0.473, 0.814, and 0.882, respectively. The split-half reliability was 0.70. No correlation was found between the QOD-P section and the SF-36; however, there were statistically significant correlations between the QOD-QoL andQOD-VAS sections and the SF-36. The same results were observed for correlations between the QOD and WHOQOL-BREF. The Chinese version of the QOD was proven to be a generally reliable and valid questionnaire for use in evaluating mainland Chinese patients suspected of having olfactory dysfunction. However, the QOD-P section requires further modifications to properly evaluate patients with a Chinese cultural background and type of cognition.

  8. Reliability of PET/CT Shape and Heterogeneity Features in Functional and Morphologic Components of Non-Small Cell Lung Cancer Tumors: A Repeatability Analysis in a Prospective Multicenter Cohort.

    PubMed

    Desseroit, Marie-Charlotte; Tixier, Florent; Weber, Wolfgang A; Siegel, Barry A; Cheze Le Rest, Catherine; Visvikis, Dimitris; Hatt, Mathieu

    2017-03-01

    The main purpose of this study was to assess the reliability of shape and heterogeneity features in both the PET and the low-dose CT components of PET/CT. A secondary objective was to investigate the impact of image quantization. Methods: A Health Insurance Portability and Accountability Act-compliant secondary analysis of deidentified prospectively acquired PET/CT test-retest datasets of 74 patients from multicenter Merck and American College of Radiology Imaging Network trials was performed. Metabolically active volumes were automatically delineated on PET with a fuzzy locally adaptive bayesian algorithm. Software was used to semiautomatically delineate the anatomic volumes on the low-dose CT component. Two quantization methods were considered: a quantization into a set number of bins (quantization B) and an alternative quantization with bins of fixed width (quantization W). Four shape descriptors, 10 first-order metrics, and 26 textural features were evaluated. Bland-Altman analysis was used to quantify repeatability. Features were subsequently categorized as very reliable, reliable, moderately reliable, or poorly reliable with respect to the corresponding volume variability. Results: Repeatability was highly variable among features. Numerous metrics were identified as poorly or moderately reliable. Others were reliable or very reliable in both modalities and in all categories (shape and first-, second-, and third-order metrics). Image quantization played a major role in feature repeatability. Features were more reliable in PET with quantization B, whereas quantization W showed better results in CT. Conclusion: The test-retest repeatability of shape and heterogeneity features in PET and low-dose CT varied greatly among metrics. The level of repeatability also depended strongly on the quantization step, with different optimal choices for each modality. The repeatability of PET and low-dose CT features should be carefully considered when selecting metrics to build

  9. Reliability of the good balance system(®) for postural sway measurement in poststroke patients.

    PubMed

    Ha, Hyungeun; Cho, Kihun; Lee, Wanhee

    2014-01-01

    [Purpose] The purpose of this study was to examine test-retest reliability of the Good Balance system(®) for measurement of postural sway in poststroke patients. [Subjects] Sixty chronic stroke patients (40 men and 20 women; age 63.08 years; stroke duration 16.45 months) participated in this study. [Methods] Postural sway was evaluated using a force platform system (Good Balance system, Metitur Oy, Jyvaskyla, Finland). Two examiners measured postural sway for all participants during two separate testing sessions. The second measurement was performed one week after the first measurement. Intraclass correlation coefficients [ICC(2,1)] were used for estimation of reliability. [Results] The ICC (95% CI) for intra-examiner reliability was good to very good, ranging from 0.69 to 0.93 (0.53-0.96), and the ICC for inter-examiner reliability was good to very good, ranging from 0.85 to 0.98 (0.77-0.99). [Conclusion] The results of the current study indicated that the intra- and inter-examiner reliability of the Good Balance system(®) for measurement of postural sway was good to very good. Therefore, we suggest that measurement of postural sway using the Good Balance system(®) would be useful for clinical assessment in poststroke patients.

  10. Timeline historical review of income and financial transactions: a reliable assessment of personal finances.

    PubMed

    Black, Anne C; Serowik, Kristin L; Ablondi, Karen M; Rosen, Marc I

    2013-01-01

    The need for accurate and reliable information about income and resources available to individuals with psychiatric disabilities is critical for the assessment of need and evaluation of programs designed to alleviate financial hardship or affect finance allocation. Measurement of finances is ubiquitous in studies of economics, poverty, and social services. However, evidence has demonstrated that these measures often contain error. We compare the 1-week test-retest reliability of income and finance data from 24 adult psychiatric outpatients using assessment-as-usual (AAU) and a new instrument, the Timeline Historical Review of Income and Financial Transactions (THRIFT). Reliability estimates obtained with the THRIFT for Income (0.77), Expenses (0.91), and Debt (0.99) domains were significantly better than those obtained with AAU. Reliability estimates for Balance did not differ. THRIFT reduced measurement error and provided more reliable information than AAU for assessment of personal finances in psychiatric patients receiving Social Security benefits. The instrument also may be useful with other low-income groups.

  11. Reliability of the ALPHA health-related fitness test battery in adolescents with Down syndrome.

    PubMed

    Tejero-Gonzalez, Carlos M; Martinez-Gomez, David; Bayon-Serna, Jorge; Izquierdo-Gomez, Rocio; Castro-Piñero, Jose; Veiga, Oscar L

    2013-11-01

    The Assessing Levels of Physical Activity (ALPHA) health-related fitness test battery is a set of reliable, valid, and feasible tests to assess health-related physical fitness in children and in adolescents. The aim of this study was to examine the reliability of this battery in adolescents with Down syndrome (DS). The extended ALPHA health-related fitness test battery was performed twice within 1 month in 17 apparently healthy adolescents, aged 12-18 years, with DS who had an intelligence quotient ≥ 35. Intraclass correlation coefficient (ICC) was used to determinate test-retest reliability, and nonparametric Wilcoxon signed rank test was used to compare mean differences between measurements. With the exception of subscapular skinfold test, which obtained a moderate agreement (ICC = 0.64), all tests had a very high reliability: the 20-m shuttle-run test (ICC = 0.86), the right handgrip strength test (ICC = 0.86), the left handgrip strength test (ICC = 0.86), the standing broad jump test (ICC = 0.85), body mass index (ICC = 0.95), waist circumference (ICC = 0.98), triceps skinfold (ICC = 0.85), and the 4 × 10-m shuttle-run test (ICC = 0.92). There were no significant differences (all p > 0.05) in any of the tests. The ALPHA health-related fitness battery is reliable for measuring health-related components of fitness in adolescents with DS.

  12. The validity and reliability of an instrument to assess children's outdoor play in various locations.

    PubMed

    Veitch, Jenny; Salmon, Jo; Ball, Kylie

    2009-09-01

    The aim of this study was to develop and test the reliability and validity of survey items that examine the frequency with which primary school-aged children play in particular outdoor locations. Parents reported the number of days their child spent playing in specified outdoor locations (i.e., yard at home, own street/court/footpath, and park/playground) out-of-school hours on weekdays and weekend days during a typical week. To test the reliability of these items, the survey was administered on two occasions, 2 weeks apart, to a sample of 53 parents of children attending primary schools located in metropolitan Melbourne. The validity study involved the completion of a log book by 46 parents of primary school children over a 1-week period. Two weeks later, the same sample of parents completed the survey items. The test-retest reliability of individual items was determined using intra-class correlation coefficients (ICC). The kappa statistic and percent agreement between responses were used to assess validity by comparing the information provided in the log book with that provided in the survey. Results from the two studies suggest that the survey was generally a reliable and valid instrument for assessing the frequency with which children play in particular locations especially at home or in the street. Evidence of the reliability and validity of items assessing where children play is novel and important considering the need to promote children's physical activity in a variety of settings.

  13. Content validity and reliability of test of gross motor development in Chilean children

    PubMed Central

    Cano-Cappellacci, Marcelo; Leyton, Fernanda Aleitte; Carreño, Joshua Durán

    2016-01-01

    ABSTRACT OBJECTIVE To validate a Spanish version of the Test of Gross Motor Development (TGMD-2) for the Chilean population. METHODS Descriptive, transversal, non-experimental validity and reliability study. Four translators, three experts and 92 Chilean children, from five to 10 years, students from a primary school in Santiago, Chile, have participated. The Committee of Experts has carried out translation, back-translation and revision processes to determine the translinguistic equivalence and content validity of the test, using the content validity index in 2013. In addition, a pilot implementation was achieved to determine test reliability in Spanish, by using the intraclass correlation coefficient and Bland-Altman method. We evaluated whether the results presented significant differences by replacing the bat with a racket, using T-test. RESULTS We obtained a content validity index higher than 0.80 for language clarity and relevance of the TGMD-2 for children. There were significant differences in the object control subtest when comparing the results with bat and racket. The intraclass correlation coefficient for reliability inter-rater, intra-rater and test-retest reliability was greater than 0.80 in all cases. CONCLUSIONS The TGMD-2 has appropriate content validity to be applied in the Chilean population. The reliability of this test is within the appropriate parameters and its use could be recommended in this population after the establishment of normative data, setting a further precedent for the validation in other Latin American countries. PMID:26815160

  14. Reliability of Maximal Strength Testing in Novice Weightlifters

    NASA Technical Reports Server (NTRS)

    Loehr, James A.; Lee, Stuart M. C.; Feiveson, Alan H.; Ploutz-Snyder, Lori L.

    2009-01-01

    The one repetition maximum (1RM) is a criterion measure of muscle strength. However, the reliability of 1RM testing in novice subjects has received little attention. Understanding this information is crucial to accurately interpret changes in muscle strength. To evaluate the test-retest reliability of a squat (SQ), heel raise (HR), and deadlift (DL) 1RM in novice subjects. Twenty healthy males (31 plus or minus 5 y, 179.1 plus or minus 6.1 cm, 81.4 plus or minus 10.6 kg) with no weight training experience in the previous six months participated in four 1RM testing sessions, with each session separated by 5-7 days. SQ and HR 1RM were conducted using a smith machine; DL 1RM was assessed using free weights. Session 1 was considered a familiarization and was not included in the statistical analyses. Repeated measures analysis of variance with Tukey fs post-hoc tests were used to detect between-session differences in 1RM (p.0.05). Test-retest reliability was evaluated by intraclass correlation coefficients (ICC). During Session 2, the SQ and DL 1RM (SQ: 90.2 }4.3, DL: 75.9 }3.3 kg) were less than Session 3 (SQ: 95.3 }4.1, DL: 81.5 plus or minus 3.5 kg) and Session 4 (SQ: 96.6 }4.0, DL: 82.4 }3.9 kg), but there were no differences between Session 3 and Session 4. HR 1RM measured during Session 2 (150.1 }3.7 kg) and Session 3 (152.5 }3.9 kg) were not different from one another, but both were less than Session 4 (157.5 }3.8 kg). The reliability (ICC) of 1RM measures for Sessions 2-4 were 0.88, 0.83, and 0.87, for SQ, HR, and DL, respectively. When considering only Sessions 3 and 4, the reliability was 0.93, 0.91, and 0.86 for SQ, HR, and DL, respectively. One familiarization session and 2 test sessions (for SQ and DL) were required to obtain excellent reliability (ICC greater than or equal to 0.90) in 1RM values with novice subjects. We were unable to attain this level of reliability following 3 HR testing sessions therefore additional sessions may be required to obtain an

  15. Reliability and validity of mobile teledermatology in HIV positive patients in Botswana: a pilot study

    PubMed Central

    Azfar, Rahat S; Lee, Robert A.; Castelo-Soccio, Leslie; Greenberg, Martin S.; Bilker, Warren B; Gelfand, Joel M; Kovarik, Carrie L

    2014-01-01

    Importance Mobile teledermatology may increase access to care. Objective To determine if mobile teledermatology in HIV positive patients in Gaborone, Botswana was reliable and produced valid consultations in comparison to face-to-face dermatology consultations. Design Cross-sectional study Setting Outpatient clinics and public inpati