Objectives: After confirming the measurement properties of the Berg Balance Scale (BBS) in patients with stroke by conducting a Rasch analysis, this study sought: (i) to generate a keyform as a tool for goal-setting and intervention-planning; and (ii) to determine the appropriate strata for separating patients' postural balance ability.
Design: Methodological analyses of cross-sectional study data.
Patients: A pooled sample of 156 patients with stroke: mean (standard deviation) age 74.4 (12.9) years.
Methods: This study evaluated the BBS's rating scale structure, unidimensionality, and measurement accuracy (0: unable to perform or requiring help, to 4: normal performance) and then generated a keyform and strata.
Results: The BBS rating scale fulfilled the category functioning criteria. Principal component analysis of standardized residuals confirmed the unidimensionality of the test. All items fit the Rasch analysis. Person ability-item difficulty matching was good. Person reliability was 0.96, and the patients were divided into 9 strata. The keyform for the BBS will enable clinicians and investigators to estimate patients' postural balance ability and monitor their progress.
Conclusion: The BBS has strong measurement properties. This study generated both a keyform that can contribute to clinicians' decision-making in goalsetting and intervention-planning and strata that can facilitate understanding of patients' abilities.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9774015 | PMC |
| http://dx.doi.org/10.2340/jrm.v54.4443 | DOI Listing |
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