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A Clinically Significant Difference on the COPM: A Review.

ABSTRACT: Background. The Canadian Occupational Performance Measure (COPM) assists occupational therapists to identify occupational performance problems using a client-centred approach. Since its first publication in 1991, there has been abundant evidence of the ability of the COPM to detect a statistically significant difference as an outcome measure. There has also been a tacit understanding that a difference of 2 points from pre-test to post-test on either Performance or Satisfaction COPM score represents a clinically significant difference. There is however, some confusion about the origins of this claim. Purpose. To ascertain empirical evidence for the claim that a clinically significant difference is a change score ≥2 points. Method. We conducted a scoping review of peer-reviewed literature (1991-2020) for intervention studies using the COPM as an outcome measure and examined intervention type and change scores. Findings. One hundred studies were identified. The COPM was used to assess effectiveness of eight types of occupational therapy interventions. The common belief, however, was not empirically supported that clinical significance can be asserted on the basis of a two-point change in COPM scores. Implications. Further research is needed to test alternative approaches to asserting clinical significance or a minimal clinically important difference.

SUBMITTER: McColl MA

PROVIDER: S-EPMC9923202 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature

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A Clinically Significant Difference on the COPM: A Review.

McColl Mary Ann MA Denis Celine Boyer CB Douglas Kate-Lin KL Gilmour Justin J Haveman Nicole N Petersen Meaghan M Presswell Brittany B Law Mary M

Canadian journal of occupational therapy. Revue canadienne d'ergotherapie 20230117 1

<b>Background.</b> The Canadian Occupational Performance Measure (COPM) assists occupational therapists to identify occupational performance problems using a client-centred approach. Since its first publication in 1991, there has been abundant evidence of the ability of the COPM to detect a <i>statistically</i> significant difference as an outcome measure. There has also been a tacit understanding that a difference of 2 points from pre-test to post-test on either Performance or Satisfaction COPM ...[more]

PMID: 36650928

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Project description:OBJECTIVE:Advances in developmentally sensitive measurement have enabled differentiation of normative versus clinically salient irritability in early childhood. However, clinical application of these measures is still nascent. The authors developed an optimized model of clinically salient irritable behaviors at preschool age. Based on this model, the authors derived an empirically based cutoff in relation to concurrent DSM-5 irritability-related disorders (i.e., oppositional defiant disorder, disruptive mood dysregulation disorder, other depressive disorders) and used longitudinal models to test the predictive validity of the cutoff for impairment and irritability trajectories and later DSM disorders. METHOD:Preschool children oversampled for irritability were followed over 3 time points into early school age (N = 425; mean age at baseline 4.7 years, mean follow-up 2.9 years). Mothers reported on children's irritability using the developmentally validated Multidimensional Assessment of Profile of Disruptive Behavior (MAP-DB) Temper Loss scale, impairment using the Family Life Impairment Scale, and DSM categories using the Preschool Age Psychiatric Assessment and the Schedule for Affective Disorders and Schizophrenia-Present and Lifetime Version. RESULTS:Of 22 MAP-DB Temper Loss behaviors, 2 behaviors-1 normative (easily frustrated) and 1 rare dysregulated (destructive tantrums)-were uniquely related to cross-domain impairment. At baseline, these 2 irritability items identified diagnostic status (oppositional defiant disorder, disruptive mood dysregulation disorder, other depressive disorders) with good sensitivity (70-73%) and specificity (74-83%). Children above the irritability cutoff at baseline also exhibited more persistent irritability and impairment and greater likelihood of DSM disorders in early school age. CONCLUSION:Clinical identification of early-onset irritability can be enhanced using brief, developmentally optimized indicators. Further research to apply these findings to tiered early intervention is important.

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A Clinically Significant Difference on the COPM: A Review.

Publications

A Clinically Significant Difference on the COPM: A Review.

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