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- Title
Validity and Reliability of the Community Balance and Mobility Scale in Individuals With Knee Osteoarthritis.
- Authors
Takacs, Judit; Garland, S. Jayne; Carpenter, Mark G.; Hunt, Michael A.
- Abstract
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.
- Subjects
CONFIDENCE intervals; STATISTICAL correlation; POSTURAL balance; EXERCISE tests; ACCIDENTAL falls; KNEE diseases; RESEARCH methodology; OSTEOARTHRITIS; RESEARCH evaluation; STATISTICS; T-test (Statistics); U-statistics; DATA analysis; BODY movement; INTER-observer reliability; CROSS-sectional method; RESEARCH methodology evaluation; DATA analysis software
- Publication
Physical Therapy, 2014, Vol 94, Issue 6, p866
- ISSN
0031-9023
- Publication type
Article
- DOI
10.2522/ptj.20130385