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Client-Centred Rehabilitation - Arthritis Community Research ...

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Validity:<br />

Chan and Lee (1997):<br />

Content - 9 member panel expert review found COPM inadequate in assessing occupational performance<br />

or performance components, but adequate in reflecting client's problems in occupational performance –<br />

interview processes critical, yet not standardized<br />

Criterion related evidence –<br />

<br />

<br />

<br />

<br />

<br />

convergent validity not found between COPM-performance subscale and the Klein-Bell ADL<br />

(KBADL) (some correlations virtually zero or negative)<br />

no convergent or discriminant validity between COPM and Functional Independence Measure<br />

(FIM)<br />

there was convergent validity between COPM-performance subscale and FIM motor subscale, as<br />

well as discriminant validity between FIM cognitive subscale and COPM performance.<br />

There was no convergent validity observed between the initial assessment of COPM satisfaction<br />

subscale and the Satisfaction with Performance Scale Questionnaire (SPSQ); there was a stronger<br />

relationship in the pre-discharge assessment<br />

significant and positive relationship between both subscales of COPM and Social/<strong>Community</strong><br />

subscale of SPSQ; however there was no differentiated convergent, discriminant validity between<br />

them or between COPM and Home Management subscale<br />

Chan and Lee feel that research should be directed to improving the instrument, that currently it is good at<br />

reflecting client's problems in occupational performance (and according to McColl et al 2000 may bring<br />

out a wider variety than simply asking client), but less desirable in facilitating therapists to make<br />

meaningful clinical decisions when client's performance is dependent on competence in performance<br />

components<br />

McColl et al (2000) –<br />

Construct validity:<br />

<br />

<br />

<br />

COPM performance subscale not significantly correlated to any of the three other scales (SPSQ,<br />

the Reintegration to Normal Living Index (RNL) or Life Satisfaction scale (LSS)<br />

Significant but low correlation between COPM -satisfaction and SPSQ, RNL, LSS<br />

Significant and high correlation between COPM Satisfaction and Performance subscales

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