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Abstract
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OBJECTIVE: The Community Balance and Mobility Scale (CBMS) has been shown to be a valid and reliable outcome measure for evaluating balance and mobility among older adults; however, some items cannot be conducted in all home environments, limiting its use in home-based assessments. The purpose of this study was to evaluate the accuracy and selected measurement properties of a modified 12-item CBMS-Home (8 original items and 4 modified items of the CBMS) feasible for use within the constraints of home assessments for older adults.
METHODS: Fifty-five people (mean age = 77.2 [SD = 6.0] years) were recruited for this validation study. Participants completed the full original CBMS, CBMS-Home (the modified items of the CBMS), the Functional Reach Test (FRT), and Step Test (ST). Principal component analysis, internal consistency, test-retest and intermethod reliability, agreements within and between methods, and criterion validity were calculated.
RESULTS: Principal component analysis of CBMS and CBMS-Home both revealed 3 similar components and loadings. Bland-Altman and weighted kappa analyses revealed that the CBMS-Home demonstrated moderate to almost perfect agreement (weighted kappa = 0.45-0.84) with CBMS. The distribution of scores of CBMS-Home were satisfactory, and other results showed excellent test-retest (intraclass correlation coefficient [ICC] = 0.95) and inter-method reliability (ICC = 0.94) and internal consistency (Cronbach alpha = 0.94). There were no ceiling effects (0%) or floor (1.8%) effects. CBMS-Home demonstrated a low (Spearman ρ = 0.39) and moderate positive (Spearman ρ = 0.63) relationship with the FRT and ST, respectively.
CONCLUSIONS: The CBMS-Home has good psychometric properties and provides a useful multidimensional assessment tool. IMPACT: A modified version of the CBMS (CBMS-Home) can be confidently used to assess older adults-within their own home-who might have mild balance impairments.
Language: en |