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Using compensations to assess physical performance for ambulatory outpatients11 No commercial party having a direct financial interest in the results of the research supporting this article has or will confer a benefit upon the authors(s) or upon any organization with which the author(s) is/are associated.

Authors
Journal
Archives of Physical Medicine and Rehabilitation
0003-9993
Publisher
Elsevier
Publication Date
Volume
85
Issue
9
Identifiers
DOI: 10.1016/j.apmr.2003.12.023
Keywords
  • Articles
Disciplines
  • Medicine

Abstract

Abstract White LJ, Straube D, Keehn MT. Using compensations to assess physical performance for ambulatory outpatients. Arch Phys Med Rehabil 2004;85:1519–24. Objective To construct a physical performance scale for community-dwelling ambulatory outpatients that is linear, includes high functioning tasks, and uses common compensations to assess difficulty levels. Design Calibrated subject performances on 19 tasks were rated by an examiner, timed, and had compensations recorded. Setting Ambulatory outpatient physical therapy (PT) department of a tertiary care center. Participants Convenience sample of 50 community-dwelling patients with difficulties in mobility referred for PT. Interventions Not applicable. Main outcome measures The Community Ambulatory Physical Performance Scale (CAPPS) constructed by using Rasch analysis, the Lower Extremity Functional Scale (LEFS), and the six-minute walk test (6MWT). Results The CAPPS showed construct validity after removal of 3 items. Two additional items were removed for improved clinical utility. The person reliability was .89 and item reliability was .98. Subjects’ performance on the CAPPS correlated with the 6MWT ( r=.79; 95% confidence interval [CI], .65–.87) and with the LEFS ( r=.62; 95% CI, .40–.78). Conclusions The CAPPS showed good psychometric properties and has utility for assessments of higher-level physical functioning. This standardized approach to performance testing for ambulatory outpatients appears to be a promising method for articulating the compensations persons use to accomplish common tasks. Use of compensatory strategies to assess difficulties in physical performance may assist in delineating interventions directed toward improving task performance.

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