The responsiveness of the Danish version of the Canadian Occupational Performance Measure

Abstract

Introduction To establish the responsiveness of the Danish version of the Canadian Occupational Performance Measure (COPM-DK). Method A cross-sectional study was performed in three Danish settings, including 88 clients, 40 men, aged 16–90 years, with a variety of diagnoses. To determine construct responsiveness, the mean changes of the COPM performance and satisfaction score (COPM-P/S) were compared and correlated with the mean changes in the five-item World Health Organization (WHO) Well-Being Index (WHO-5) and the EuroQol–five domains–five levels questionnaire (EQ-5D-5L). To determine the responsiveness, data were analysed with ROC curves to establish the optimal cut-point values for the COPM-DK scores. Minimal important change (MIC) was assessed in relation to anchor-based questions. Results The mean change for COPM-P/S was 3.1 and 3.0, respectively. Small positive correlations were found between the COPM-DK scores and the WHO-5 and EQ-5D-5L scores. The AUC were 0.76 and 0.75, respectively. The optimal cut-point values for the COPM-P/S-scores based on either all positive answers or to the two highest, were 1.2 or 4.20 (COPM-P) and 1.67 or 5.80 (COPM-S), respectively Conclusions The capability of the COPM to detect changes in perceived occupational performance issues is supported. We recommend an MIC on 3.5 points on both scales.

Effectiveness of an individualised occupational therapy intervention programme (ABLE) using adaptational strategies on activities of daily living among persons with chronic conditions: A randomised controlled trial (RCT)

“…29 Results indicated a statistically significant difference between groups, but neither differences between groups nor changes over time reached the recently recommended minimal important change of 3.5 points. 33 Considering that these studies had omitted observation-based outcomes, the risk would have been that the interventions had been deemed ineffective. Poor relationships between self-reported and observation-based outcomes have previously been found in comparable samples, for example, people with chronic widespread pain 7,31 and people with inflammatory rheumatoid diseases.…”

Systematic review of measurement properties of the Canadian Occupational Performance Measure in geriatric rehabilitation

“… Change scores correlated high with WOMAC physical function Hypothesis that change scores of measures intended for a similar purpose should display moderate correlation. No hypothesis for SRM on expected magnitude of effect size Yes, moderate (borderline high) correlations In publication responsiveness is called ‘longitudinal convergent construct validity’ Adequate (properties WOMAC for present population not reported in text) Enemark Larsen [ 20 ] Construct approach comparator and subgroups, comparison of delta COPM with delta WHO-5, EQ VAS (using Spearman correlations), and in subgroups of AQ with self-rated change, and in subgroups with cut-points WHO-5 and EQ VAS (using ROC curves) Rehabilitation for various reasons; follow-up assessment after mean 101 days (SD 59.1; range 7–288) Correlations of change scores of COPM-P and -S with WHO-5 0.22 and 0.32, with EQ VAS 0.32 and 0.36; Mean change scores COPM-P 3.1 (SD 2.8), COPM-S 3.0 (SD 1.8); changes higher in better subgroups for AQ/sharp (AUC 0.86/0.76 for P and 0.85/0.75 for S), for WHO-5 only the higher end, for EQ VAS only the lower end with COPM-P (AUCs < 0.70) Change scores correlated low with WHO-5 and EQ VAS; mean changes higher in better subgroups AQ (AUC > 0.70) Change scores correlated low with WHO-5 and EQ VAS; mean changes higher in better subgroups AQ (AUC > 0.70) Hypotheses formulated based on anchor question self-rated change, and based on clinically relevant cut-points for comparator scales Partly, COPM responsive to change compared to patient-reported improvement, but not so much with WHO-5 or EQ VAS COPM-sumscores not limited to similar OPIs across both time points; MIC recommendations C: adequate/s: doubtful (no description of important characteristics subgroups) Kjeken [ 22 ] Construct approach intervention with comparators; analyses of change scores for COPM using paired sample t test, and comparison of standardized response means (SRM) with other instruments MHAQ WOMAC AUSCAN OT intervention (depending on intake), follow-up 4 months after baseline Mean change scores COPM-P −1.51 (CI −2.04; −0.98), COPM-S −2.22 (CI −2.80; −1.63); SRM large for COPM-P (0.7) and COPM-S (0.9), moderate for MHAQ (0.5), and small for WOMAC (0.15) and AUSCAN (0.25) Scores changed significantly; SRM higher than for other measures MHAQ, WOMAC, AUSCAN Scores changed significantly; SRM higher than for other measures MHAQ, WOMAC, AUSCAN No hypotheses regarding treatment effect N/A Doubtful (patients who changed medication or undergone surgica...…”

“…Four studies used a ‘construct approach comparator’: they compared delta scores on COPM with delta scores on another instrument, using correlations [ 18 – 20 ] or predefined hypotheses [ 6 ]. Methodological quality scored adequate in these four studies.…”

“…We found that responsiveness was moderate in three studies that scored adequate for methodological quality. Worth mentioning is that Tuntland et al and Enemark Larsen et al studied interpretability, and both recommended a higher cut-off point for minimal important change, using, respectively, 3 or 3.5 instead of 2 points mentioned in the COPM-manual [ 6 , 20 ].…”

An exploration into the occupational identity of women following breast cancer and treatment: A qualitative study

“…The primary forms of treatment for breast cancer are surgery, chemotherapy, radiotherapy, hormone therapy and targeted therapy (Jakobsen et al, 2018; Thomsen et al, 2023). Side effects of treatment can include cancer-related cognitive, fatigue and upper-extremity impairments, lymphedema and chemotherapy-induced peripheral neuropathy (Baxter et al, 2017; McGrath, 2013; Pergolotti et al, 2016).…”