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. 2007 Oct;16(8):1389-98.
doi: 10.1007/s11136-007-9247-8. Epub 2007 Jul 31.

The Burden of Stroke Scale (BOSS) provided valid, reliable, and responsive score estimates of functioning and well-being during the first year of recovery from stroke

Patrick J Doyle  1 , Malcolm R McNeil, James E Bost, Katherine B Ross, Julie L Wambaugh, William D Hula, Joseph M Mikolic
Affiliations

The Burden of Stroke Scale (BOSS) provided valid, reliable, and responsive score estimates of functioning and well-being during the first year of recovery from stroke

Patrick J Doyle et al. Qual Life Res. 2007 Oct.

Abstract

Objectives: To examine the reliability, validity, and responsiveness of the Burden of Stroke Scale (BOSS).

Study design: A prospective cohort of stroke survivors were assessed at 3 (T1, T2), 6 (T3), and 12 (T4) months post onset (MPO) of stroke. Test-retest reliability was evaluated by calculating intra-class correlation coefficients (ICCs) between T1 and T2 scale scores. Convergent validity was evaluated by calculating Pearson product moment correlation coefficients between T1 BOSS, Stroke Impact Scale and MOS SF-36 scale scores assessing similar health concepts. Responsiveness was evaluated using a repeated measures ANOVA and the linear trend test in the full study sample and by calculating standardized response means (SRM) and a probability of change statistic, p between T1, T3, and T4 scale scores in participants demonstrating change on external criteria.

Results: ICCs ranged from 0.78 to 0.94. Pearson coefficients ranged from -0.57 to -0.86. Moderate to high responsiveness estimates were obtained for 9 of 12 subscales with SRM (p) values ranging from .497 (.690) to 1.161 (.877). Composite scale SRM (p) values ranged from .661 (.746) to 1.192 (.883).

Conclusions: The BOSS provided valid and reliable score estimates that were responsive to positive changes in functioning and well-being during the first year of recovery from stroke.

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