Wallen et al. reply

Occupational Therapy, The Children's Hospital at Westmead, Sydney, NSW  The University of Queensland, Brisbane, QLD   Children's Allied Health Research, Queensland Health, Brisbane, QLD  Princess Margaret Hospital, Subiaco, WA  Department of Rehabilitation, The Children's Hospital at Westmead, Sydney, NSW  Cerebral Palsy Alliance, University of Notre Dame, Sydney, NSW  Musculoskeletal Division, The George Institute for Global Health, Sydney, NSW, Australia.
Developmental Medicine & Child Neurology (Impact Factor: 3.29). 03/2012; 54(5). DOI: 10.1111/j.1469-8749.2012.04263.x
Source: PubMed
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    ABSTRACT: The Canadian Occupational Performance Measure (COPM) is an outcome measure designed to assess performance and satisfaction with occupation. It was developed to coincide with the occupation-focused, client-centred Canadian Model of Occupational Performance. The COPM has been a feature of the occupational therapy landscape for approximately 15 years and has pervaded the consciousness of occupational therapists around the world. In this paper, we examine issues associated with application of the COPM in targeted clinical and non-clinical situations. The paper suggests considerations required to ensure that the highest quality of information is derived from the COPM in all situations. Although the paper emphasizes the centrality of the client-centred approach, it also demonstrates the flexibility and adaptability of the COPM to different situations, clients, settings and purposes.
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    ABSTRACT: The Canadian Occupational Performance Measure (COPM) is a commonly used outcome measure in rehabilitation. In this study it was adapted for very young children by deleting paid/unpaid work and household management categories and having parents act as proxies to rate child performance and their own satisfaction. To assess the internal consistency reliability, content and construct validity, responsiveness, and impact of half scores (20 not 10-point scale) of the adapted COPM. Parent proxies of subjects aged 2 - 8 (mean 3.9) years with spastic hemiplegic cerebral palsy (n = 41) participating in a clinical trial. There was a total of 214 occupational performance problems for analysis and an additional 56 which had used half score ratings. Internal consistency reliability and construct validity were evaluated using Cronbach alpha statistic. Proxy views explored content validity. Responsiveness was evaluated using pre-post intervention scores and a comparison with Goal Attainment Scaling scores which were assumed to be a suitable benchmark measure. The effect of half scores was assessed by two-sample t-tests. The COPM adaptations did not have a negative impact on internal consistency reliability as this was acceptable for performance (0.73) and satisfaction (0.83). The high Cronbach alpha scores indicated good construct validity. Content of occupations and rating approach was considered valid by proxies. Use of half scores did not result in significantly different performance ratings, but mean satisfaction ratings were significantly higher when half scores were used (p = 0.0001). This suggests that half scores may provide more precise proxy satisfaction ratings, but at the cost of rigour as internal consistency with satisfaction half scores was lower (0.63 vs. 0.82). Responsiveness to change in clinical status was demonstrated by significant pre-post scores and moderate correlations with goal attainment scores. The adapted COPM is a psychometrically robust tool and the use of half scores is not recommended.
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    ABSTRACT: The goal was to assess the effectiveness of an occupational therapy home program (OTHP), compared with no OTHP, with respect to function and parent satisfaction with child function, participation, goal attainment, and quality of upper limb skill in school-aged children with cerebral palsy. Thirty-six children with cerebral palsy (mean age: 7.7 years; male: 69%; Gross Motor Function Classification System: level I, 47%; level II, 14%; level III, 16%; level IV, 7%; level V, 16%; spasticity, 85%; dyskinesia, 14%; ataxia, 3%) were randomly and equally assigned to OTHPs for 8 or 4 weeks or to no OTHP. The primary end point was Canadian Occupational Performance Measure scores 8 weeks after baseline. Secondary measures were recorded at 4 and 8 weeks. Eight weeks of OTHP produced statistically significant differences in function and parent satisfaction with function, compared with no OTHP. Parents in the 4-week OTHP group did not discontinue use at 4 weeks, as instructed, and continued for 8 weeks; results demonstrated statistically significant differences, compared with no OTHP. There was no difference in primary or secondary end point measures between intervention groups. Pediatricians can advise families that OTHPs developed with a collaborative, evidence-based approach and implemented by parents at home were clinically effective if implemented 17.5 times per month for an average of 16.5 minutes per session.
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