Minimal Important Change in Canadian Occupational Performance Measure: A Systematic Review

The Canadian Occupational Performance Measure (COPM) recognizes a significant clinical shift with a minimum two-point alteration post-intervention. However, there is sparse evidence supporting this criterion's clinical significance. To investigate and report minimal important change (MIC) and minimal detectable change (MDC) within the COPM in various populations. In May 2023, a search was conducted to locate studies that calculated MIC and MDC in the COPM using multiple databases. Studies were screened and extracted to assess bias risk in the final article selections. After screening 229 included studies, five studies were selected; four studies calculated MIC (performance: 0.20-3.20 points, satisfaction: 1.45-3.20 points) and one study calculated MDC (performance: 1.47-3.14 points, satisfaction: 1.80-3.98 points) within the COPM. The study populations, reassessment periods, and risk of bias varied. To effectively use COPM's MIC and MDC as references, clients and intervention conditions must be considered.