التفاصيل البيبلوغرافية
| العنوان: |
Does the Brief-BESTest Meet Classical Test Theory and Rasch Analysis Requirements for Balance Assessment in People With Neurological Disorders? |
| المؤلفون: |
Bravini, Elisabetta1,2, Nardone, Antonio3, Godi, Marco4 marco.godi@fsm.it, Guglielmetti, Simone5, Franchignoni, Franco6, Giordano, Andrea7 |
| المصدر: |
Physical Therapy. Oct2016, Vol. 96 Issue 10, p1610-1619. 10p. |
| مصطلحات موضوعية: |
*CONFIDENCE intervals, *STATISTICAL correlation, *POSTURAL balance, *FACTOR analysis, *RESEARCH methodology, *NEUROLOGICAL disorders, *PSYCHOMETRICS, *RELIABILITY (Personality trait), *RESEARCH funding, *STATISTICS, *SAMPLE size (Statistics), *DATA analysis, *STATISTICAL reliability, *INTER-observer reliability, *MULTITRAIT multimethod techniques, *RESEARCH methodology evaluation, *DATA analysis software, *INTRACLASS correlation |
| مصطلحات جغرافية: |
ITALY |
| مستخلص: |
Background. The Brief Balance Evaluation Systems Test (Brief-BESTest) was recently proposed as a clinical tool for quickly measuring balance disorders, but its measurement properties warrant investigation. Objective. The study objective was to perform a detailed analysis of the psychometric properties of the Brief-BESTest by means of Classical Test Theory and Rasch analysis. Design. This was an observational measurement study. Methods. Brief-BESTest data were collected from a sample of 244 participants. Internal consistency was analyzed with the Cronbach a and item-to-total correlations. Test-retest reliability and interrater reliability were investigated in a subgroup of 21 participants. The minimum detectable change at the 95% confidence level was calculated. Scale dimensionality was examined through Horn parallel analysis; this step was followed by exploratory factor analysis for ordinal data. Finally, data were examined using Rasch analysis (rating scale model). Results. The Cronbach a was .89, and all item-to-total correlations were greater than .40. Test-retest reliability had an intraclass correlation coefficient (ICC) (2,1) of .94, and interrater reliability had an ICC (2,1) of .90. The minimum detectable change at the 95% confidence level was 4.30 points. The unidimensionality of the test was confirmed, but 1 item showed low communality. Rasch analysis revealed the inadequacy of response categories, 5 misfitting items, minor mistargeting, moderate person reliability (.80), and 2 pairs of locally dependent items. Limitations. The sample was a cross-section of people who had balance disorders from different neurological etiologies and were recruited consecutively at a single rehabilitation facility. Conclusions. The Brief-BESTest was confirmed to have some acceptable-to-good reliability indexes when calculated according to Classical Test Theory, but the scale showed fairly limited sensitivity to change. Rasch analysis indicated that item selection should be improved from a psychometric point of view. Item redundancy needs to be reduced, and the metric coverage of the measured construct needs to be improved with new items. [ABSTRACT FROM AUTHOR] |
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