Pilot Testing of the Canadian Occupational Performance Measure: Clinical and Measurement Issues

Abstract

The Canadian Occupational Performance Measure (COPM) is a measure of a client's self-perception of occupational performance in the areas of self-care, productivity and leisure. The COPM is administered using a semi-structured interview in which the client identifies significant issues in daily activities which are causing difficulty. Extensive pilot testing of the COPM has been completed with 268 clients in communities across Canada and in New Zealand, Greece and Britain. Results indicate the COPM has a median administration time of 30 minutes, is able to identify a wide range of occupational performance issues and appears to be responsive to changes in measurement issues centering around the interview, test construction, scoring, timing of the assessment, respondents, and the assessment process are discussed.

Responsiveness of the Canadian Occupational Performance Measure

“…Significant correlations have also been found in other studies for the changes in scores [17,22,56] and for the scores at the initial assessment and at the reassessment [23,26]. A possible reason for the significant correlations is that clients have difficulty interpreting the difference between the concepts of performance and satisfaction.…”

“…Supportive evidence was found for the content, convergent, and divergent validities of the COPM [2,7,9,11,[13][14][15][16][17][18]. Clinical utility, evaluated in a number of different studies, supported the use of the COPM for a variety of clients in different settings [13,17,[19][20][21][22][23][24][25][26]. The COPM is designed to not only identify the client's perceived problems but also determine whether these problems have changed over time.…”

Interdisciplinary Residential Treatment of Posttraumatic Stress Disorder and Traumatic Brain Injury: Effects on Symptom Severity and Occupational Performance and Satisfaction

“…Study results demonstrated that all outcome variables (PTSD symptoms, depression symptoms, occupational performance, and satisfaction with occupational performance) significantly improved over the course of residential treatment. Furthermore, reductions in all outcome variables were clinically significant as reflected in CAPS score changes of ³15 and PCL-S score changes of ³10 (Monson et al, 2006), BDI-II average score changes from severe (29-63) to mild (14-19) depression (Beck et al, 1996), and changes in COPM levels of ³2 (Law et al, 1994;Phipps & Richardson, 2007). In sum, changes were both statistically significant and clinically meaningful.…”

“…The total performance (COPM-P) and total satisfaction (COPM-S) ratings are calculated by summing individual performance and satisfaction ratings and dividing by the total number of problems. Change in performance and satisfaction is measured by the difference in total scores over a period of time (Law et al, 1994;Phipps & Richardson, 2007). The COPM has sound construct and criterion validity and test-retest reliability of >.80 (Law et al, 1994(Law et al, , 2005McColl, Paterson, Davies, Doubt, & Law, 2000).…”

Client-centred assessment and the identification of meaningful treatment goals for individuals with a spinal cord injury

“…8 The COPM has demonstrated test-retest reliability (r ¼ 0.80 for performance and r ¼ 0.89 for satisfaction; ICC ¼ 0.92 for performance and ICC ¼ 0.90 for satisfaction) 8,13,14 and has been shown to be a valid measure across diagnostic categories and treatment settings. [15][16][17][18][19][20] Client-centred assessment in SCI C Donnelly et al…”