Evaluating rehabilitation requires rating scales that detect change. The authors examined Barthel Index (BI) data from 1,495 patients at a neurorehabilitation unit to determine whether total scale responsiveness accurately reflects item responsiveness. Total score effect sizes were moderate to large (0.47 to 1.09). Item-level effect sizes (0.13 to 1.16) reveal floor (3.5 to 82.3%) and ceiling (9.7 to 95.4%) effects. Results suggest BI total score effect sizes may hide item-level weaknesses and may underestimate the impact of rehabilitation.
CITATION STYLE
O’Connor, R. J., Cano, S. J., Thompson, A. J., & Hobart, J. C. (2004). Exploring rating scale responsiveness: Does the total score reflect the sum of its parts? Neurology, 62(10), 1842–1844. https://doi.org/10.1212/01.WNL.0000116136.22922.D6
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