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Establishing the reliability of mobility milestones as an outcome measure for stroke

Baer, G. and Smith, M.T. and Rowe, P.J. and Masterton, L.A. (2003) Establishing the reliability of mobility milestones as an outcome measure for stroke. Archives of Physical Medicine and Rehabilitation, 84 (7). pp. 977-981. ISSN 0003-9993

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Abstract

Study aims to establish intrarater, interrater, and test-retest reliability of a standardized measure of mobility, "mobility milestones", incorporating sitting balance, standing balance, and walking ability. Kappa statistics were used to determine interrater reliability and showed good (.61-.80) to very good (.81-1.0) reliability for 3 of 4 milestones. Intraclass correlation coefficients (ICCs) were used to determine intrarater reliability of the 4 repeated clips and showed 75% of all subjects had high (ICC2,1=.91-1.0) reliability. The ICC2,1 for test-retest reliability showed a similar pattern, with 70% of subjects showing good (.81-.90) or high (.91-1.0) reliability. The mobility milestones showed favorable levels of reliability when used by experienced or novice physiotherapists. The milestones can be adopted as a simple clinical outcome measure for use with stroke. Further research is required to establish reliability levels when the measure is used by different rehabilitation professionals.