Validity and community utility of the Canadian Occupational Performance Measure

A comparison of goal attainment scaling and the Canadian Occupational Performance Measure for paediatric rehabilitation research

PURPOSE

To investigate the relative utility of Canadian Occupational Performance Measure (COPM) (adapted for children) and Goal Attainment Scaling (GAS) as outcome measures for paediatric rehabilitation.

METHODS

A two-group pre-post design investigated the impact of a 3-month programme. Forty-one children with spastic hemiplegic cerebral palsy (mean 3.9 years; GMPM level 1; 21 boys, 10 girls) were randomized to occupational therapy only and occupational therapy plus one Botulinum Toxin A injection. The latter was considered a 'proven' intervention for the purpose of this instrumentation study. Intervention impact was investigated using GAS and COPM. Instrument sensitivity, convergent validity, goal/problem profiles and administration were evaluated.

RESULTS

Both instruments were sensitive to within group change and detected significant between group change. Likert scale coding for GAS scores was more sensitive than the traditional weighted GAS or COPM. Different constructs were measured by each instrument. COPM was more time efficient in training, development and administration.

CONCLUSION

Study aim, logistic and resource factors should guide the choice of COPM and/or GAS instruments as both are sensitive to change with a proven intervention and both evaluate different constructs.

Reliability and validity of the Canadian Occupational Performance Measure for clients with psychiatric disorders in Taiwan

The purpose of the study was to examine the reliability and validity of the Canadian Occupational Performance Measure (COPM) in Taiwanese clients with psychiatric disorders. The COPM was translated into Mandarin and tested on 141 Taiwanese clients. The average age of the clients was 35.6 years; 94% were diagnosed with schizophrenia. The results of the study showed that the test retest reliability of the COPM was r = 0.842. The COPM identified occupational performance problems that included self-care (37%), productivity (25%), and leisure occupations (20%). Fifty percent of the therapists were receptive in adapting the client-centred approach and applying the COPM in their clinical practice. It was concluded that the COPM can be applied reliably to Taiwanese clients. Furthermore, the COPM was valuable in identifying information related to occupational performance that could not be identified elsewhere. Since 50% of the therapists felt reluctant about the appropriateness of the client-centred approach in their culture, it was important to examine the gap between clients' judgements and actual performance, as well as to evaluate the feasibility of the client-centred concept in clinical practice. Finally, the concept of the client-centred approach needs to be disseminated and communicated to the occupational therapy profession in order that the COPM can be adequately applied in mental health practice.

A study compared nine patient-specific indices for musculoskeletal disorders

BACKGROUND AND OBJECTIVE

Patient-specific quality of life indices show great potential, but certain conceptual and methodological concerns have yet to be fully addressed. The present study reviewed nine patient-specific instruments used in musculoskeletal disorders: the Canadian Occupational Performance Measure (COPM), Juvenile Arthritis Quality of life Questionnaire (JAQQ), McMaster-Toronto Arthritis questionnaire (MACTAR), Measure Yourself Medical Outcome Profile (MYMOP), Patient-Specific Index (PASI) for total hip arthroplasty, Problem Elicitation Technique (PET), Patient Generated Index (PGI) of quality of life, Patient-Specific Functional Scale (PSFS), and Schedule for the Evaluation of Individual Quality of Life (SEIQoL).

STUDY DESIGN AND SETTING

Each tool was evaluated for purpose, content validity, face validity, feasibility, psychometric properties, and responsiveness.

RESULTS

This critical appraisal revealed important differences in terms of the concept underlying these indices, the domains covered, the item-generation techniques and the scoring (response scale, methods) in each scale. The nine indices would generate different responses and likely scores for the same patient, despite the fact that they all include patient-generated items.

CONCLUSION

Although the value of these indices in treatment planning and monitoring at an individual level is strong, more studies are needed to improve our understanding of how to interpret the numeric scores of patient-specific indices at both an individual and a group level.

Validity of the Canadian Occupational Performance Measure: a client-centred outcome measurement

OBJECTIVE

To study the convergent and divergent validity of the Canadian Occupational Performance Measure (COPM).

DESIGN

Cross-sectional study.

SETTING

The occupational therapy departments of two university hospitals in Amsterdam.

SUBJECTS

One hundred and five consecutive outpatients.

OUTCOME MEASURES

The COPM is a measure of a client's self-perception of occupational performance in the areas of self-care, productivity and leisure. Outcome measures of the COPM are: the client's most important problems in occupational performance and a total score for performance and a total score for satisfaction for these problems. Problems reported in the COPM were compared with the Sickness Impact Profile (SIP68), the Disability and Impact Profile (DIP) and an open-ended question.

RESULTS

Complete data were obtained for 99 clients. The identification of occupational performance problems with the COPM surpassed the items reported in the SIP68, the DIP and the open-ended question, which confirms the surplus value of the COPM. Divergent validity was further demonstrated by the low correlation coefficients between the total SIP68 scores and the COPM. Seventy-four per cent of the occupational performance problems reported in the COPM had a corresponding item in the DIP and 49% had a corresponding item in the SIP68. Convergent validity was supported by the fact that 63% of the corresponding problems in the DIP were reported to be a disruption of quality of life and 74% of the corresponding problems in the SIP68 were identified as a disability.

CONCLUSION

The results of this study provide supportive evidence for the convergent and divergent validity of the COPM. The data support the assumption that the COPM provides information that cannot be obtained with current standardized instruments to measure health.

Norwegian version of the Canadian Occupational Performance Measure in patients with hand osteoarthritis: Validity, responsiveness, and feasibility

OBJECTIVE

To test the Norwegian version of the Canadian Occupational Performance Measure (COPM) for validity, responsiveness, and feasibility in patients with hand osteoarthritis.

METHODS

Seventy-nine patients completed a COPM interview and several self-reported health status questionnaires, including Arthritis Impact Measurement Scales 2, modified Health Assessment Questionnaire; Western Ontario and McMaster Universities Osteoarthritis Index, and the Australian/Canadian Osteoarthritis Hand Index. Rescoring of the same instruments was performed 4 months later, after an intervention.

RESULTS

The COPM detected a great variability of occupational performance problems. The hypotheses for testing validity were confirmed. Mean COPM change was 1.51 (P < 0.001) in performance score, and 2.22 (P < 0.001) in satisfaction score. The median time spent on the COPM interview was 30 minutes (range 10-70 minutes). The patients found the questions easy to understand, but 37% reported problems performing the scoring procedure.

CONCLUSIONS

The Norwegian version of the COPM is a valid and responsive instrument for use in clinical practice in osteoarthritis patients. It may serve as an instrument to promote a client-centered approach and as a supplement to other health measures in the planning and evaluating of interventions. Feasibility regarding scoring needs to be improved.

Implantation of the Freehand System during initial rehabilitation using minimally invasive techniques

STUDY DESIGN

Series of four single subjects with and without intervention design.

OBJECTIVES

To describe a minimally invasive surgical technique used to implant the Freehand System during initial spinal cord injury (SCI) rehabilitation and to report rehabilitation outcomes of four recently injured adolescents using the Freehand System.

SETTING

Nonprofit children's hospital specializing in orthopedic and SCI care.

METHODS

Four subjects with C5 tetraplegia between 13 and 16 years of age and between 9 and 16 weeks following traumatic SCI underwent implantation of the Freehand System using minimally invasive surgical techniques. Outcomes on muscle strength, pinch force, hand function, performance of activities of daily living and satisfaction with and without the Freehand System were collected.

RESULTS

Each subject was successfully implanted with the Freehand System without perioperative complications and employed the Freehand System during therapy services and ad lib on the rehabilitation floor. At the last follow-up, every subject remained a motor candidate for the Freehand System. With the Freehand System, average lateral and palmar pinch force was 1.8 and 1.6 kg respectively; average pinch force without functional electrical stimulation (FES) was 0.29 kg. With the Freehand System, three subjects improved their rate of performance on The Upper Extremity Capabilities Questionnaire. All subjects increased their level of independence on The Quadriplegia Index of Function. On the Canadian Occupational Performance Measure (COPM) with the Freehand System, average performance and satisfaction scores improved for every patient. Three of the four subjects continued to use the system at home.

CONCLUSION

This case series demonstrates that the Freehand System can vastly improve hand function and performance of rehabilitation activities within days after a minimally invasive implant procedure during initial SCI rehabilitation. Satisfaction with the Freehand System beyond initial rehabilitation is evidenced by continued use at home.

Empowerment in measurement: “muscle,” “voice,” and subjective quality of life as a gold standard 11No commercial party having a direct financial interest in the results of the research supporting this article has or will confer a benefit upon the authors(s) or upon any organization with which the author(s) is/are associated

Measurement and assessment, occurring within both research and clinical service contexts, typically involve an imbalance of power between professionals and persons with disabilities. Power is evidenced in who controls decisions about measurement and whose perspective--the subjective values of the measured person or the objective or normative values of the measurer--is given primacy. The consequences of this imbalance are discussed with respect to both sides of the power relationship. For clinicians, evaluators, and researchers, who typically hold most, if not all of the power in measurement, the process may produce data that meet the highest professional standards. However, the utility of such data is limited in addressing many purposes. For research participants and service recipients, who typically have little if any control of measurement, the measurement process may be disempowering, because measures focus on areas of life that may be of little relevance to what they see as important. In effect, both sides lose, to the degree that resulting data are less revealing than would be the case in a more balanced power relationship. Methods are discussed for reducing power imbalances to improve the utility and efficacy of measurement.

Analyse critique des modalités d’évaluation des résultats de la chirurgie fonctionnelle du membre supérieur tétraplégique. Revue de la littérature sur les 50 dernières années

OBJECTIVE

To study the methods of assessment of upper limb functional surgery in the literature.

METHODS

The literature review relating to the years 1950-2002 was carried out with three data bases: Medline, Pascal, Embase. This review also involved a thorough study of non-indexed references.

RESULTS

Although many instruments or tests are used to assess outcome after surgery, their reliability, validity and responsiveness have not been adequately proven. Methodology appears to be the major failing of the various scales used to assess these patients. The conceptual models underlying the evaluation are all too often unspecified. There is a lack of pertinence of the selected tasks for tetraplegics. There is limited documentation of the guiding framework or conceptualisation. Furthermore, the process of item selection is often unknown. Scales or instruments are also deemed to be too insensitive to document the small but meaningful functional gains made by tetraplegics after functional surgery.

CONCLUSION

To answer the need for a specific assessment tool for tetraplegics who undergo functional surgery, we have developed a national, multicenter, prospective and longitudinal study based on two concepts: the first concept is related to Life Habits that are the activities of daily living and social roles recognised by the socio-cultural context of a person according to age, sex and social and personal identity. They include activities that should be accomplished on a daily basis (nutrition, fitness, personal care, communication, mobility, etc.). Life Habits presenting a significant level of disruption can create handicap situations. The second concept is in relation with Motor Capacities that correspond to the abilities of a patient to perform basic and functional tasks regardless of contextual factors (environmental and personal factors).

Goal Priorities Identified through Client-Centred Measurement in Individuals with Chronic Stroke

PURPOSE: The purpose of this study was to identify goal priorities in a sample of individuals with chronic stroke. METHOD: In this descriptive study involving 19 community-dwelling individuals with stroke, participants were interviewed on the Canadian Occupational Performance Measure (COPM) to ascertain problem areas experienced after hospital discharge. Once problems were identified, they were classified under the three dimensions of the COPM: self-care, productivity, and leisure. RESULTS: The mean time since stroke was 6.8 (±2.9) years. Eighty-four problems were identified within the three dimensions of the COPM. The most frequently cited problems in each dimension were bathing (self-care) by 42% of participants, household maintenance (productivity) by 32% of participants, and walking outdoors (leisure) by 32% of participants. Overall, participants rated their performance of identified problems and satisfaction with their abilities as low and rated each dimension as equally important for problem priority. CONCLUSION: Long after hospital discharge, individuals with chronic stroke were able to identify issues of concern that could benefit from involvement of rehabilitation professionals. Clinicians should be aware that issues of bathing, walking, household maintenance, and recreational activities are of particular importance to people with chronic stroke living in the community. A client-centred approach to problem generation (ie, use of the COPM) may assist in enhancing client involvement and motivation towards rehabilitation.

Prospective evaluation of biceps to triceps and deltoid to triceps for elbow extension in tetraplegia

PURPOSE

The purpose of this study was to evaluate and compare the deltoid to triceps and biceps to triceps transfers for restoration of elbow extension in young persons with tetraplegia.

METHODS

This was a prospective randomized study. Sixteen arms of 9 subjects between 8 and 20 years of age with cervical-level spinal cord injuries were assigned randomly to undergo either a deltoid to triceps transfer or a biceps to triceps transfer. All arms were followed-up prospectively for at least 2 years after surgery.

RESULTS

Elbow extension was restored in 8 arms via the deltoid and in 8 arms via the biceps transfers. At the 24-month follow-up evaluation 7 of the 8 biceps transfers produced antigravity strength (grade 3 or better); in contrast only one arm with the deltoid transfer was able to extend against gravity. There was a considerable but subclinical loss (no subject appreciated any functional deficit) of elbow flexion torque after both transfers. Three months after surgery the deltoid group showed a 51% loss of elbow flexion torque and the biceps group showed a 52% loss of elbow flexion torque. By 24 months after surgery both groups improved but still showed a loss of flexion torque (deltoid 32%, biceps 47%). After gaining elbow extension the subjects in both groups rated the performance of most activities of daily living (ADL) and all self-selected activities as better, as measured on the Modified University of Minnesota Tendon Transfer Functional Improvement Questionnaire and the Canadian Occupational Performance Measure, respectively. Likewise all subjects were more satisfied with performance of their goals after undergoing elbow extension reconstruction.

CONCLUSIONS

This study showed the benefits of restoring elbow extension in persons with tetraplegia and provided support for the biceps transfer as an alternative to the deltoid to triceps transfer in individuals with good brachialis and supinator strength.

Experiences with the COPM and client-centred practice in adult neurorehabilitation in Taiwan

The application of a client-centred approach and the Canadian Occupational Performance Measure (COPM) were investigated in a neurorehabilitation unit in Taiwan. Four Taiwanese occupational therapists were trained in the use of client-centred practice and the COPM before using them with 12 clients attending neurorehabilitation. The COPM and the Reintegration to Normal Living Index (RNL) were administered before treatment and after one month of neurorehabilitation to investigate the sensitivity of the COPM in measuring change. Pre and post interviews were also conducted with the participating occupational therapists to ascertain their perceptions of the clinical utility of the COPM, and to determine their views about the client-centred approach. Matched t-tests showed significant increases in clients' self-ratings of performance and satisfaction on the COPM and in RNL scores between pre and post tests. The qualitative findings highlighted issues regard-ing the administration, scoring and identification of problems in the COPM and client-centred practice, such as clients' willingness to manage their own health care and empowerment to participate in intervention, as well as therapists' knowledge of and confidence with this new approach. Although this study was limited by small sample size and the use of only one hospital neurorehabilitation unit, it has shown the utility of the COPM as an outcome measure in this setting. Further research is warranted to investigate cultural influences on client-centred practice.

Perceived benefits of word prediction intervention on written productivity in children with spina bifida and hydrocephalus

Word prediction has been commonly used as a tool to enhance written productivity. However, the effectiveness of word prediction as a strategy to meet this targeted outcome has not been established. Using a single-subject alternating treatments design, this study evaluated the effect of word prediction on written productivity from the users' perspectives. Three girls and one boy aged 10-12 with spina bifida and hydrocephalus participated in the study over a period of 20 days. The Canadian Occupational Performance Measure (COPM) was used to measure changes in perception of written productivity. Analysis of individual participant data showed that participants perceived word prediction to have the potential to influence written productivity on some writing tasks. Quantitative analysis using a randomization test did not reveal any significant changes in COPM scores after using word prediction. The varied abilities of the participants in the study and the small sample size may be the reasons why statistical analysis did not show any changes. The limitations of this study included use of a copy task, lack of a supporting measure to COPM and limited generalizability. Further studies with a larger sample are necessary to explore the skills required for successful use of word prediction and the impact of word prediction on specific tasks.

Reliability and validity of the Canadian Occupational Performance Measure in stroke patients

OBJECTIVE

To research test-retest reliability and discriminant validity of the Canadian Occupational Performance Measure (COPM), a client-centred outcome measure, in stroke patients.

DESIGN

The COPM was administered twice with a mean interval of eight days (SD 2.5, range 5-16). On both occasions the patient identified a maximum of five problems in daily activities. The problems of both interviews were compared. The problems identified during the first COPM were rated by the patient on a performance and satisfaction rating scale on both occasions. The individually identified items with use of the client-centred COPM were compared with the fixed items of standardized measures (Barthel Index, Frenchay Activities Index, Stroke Adapted Sickness Impact Profile-30, Euroqol 5D and Rankin Scale).

SETTING

Patients were interviewed at their place of residence.

SUBJECTS

Twenty-six stroke patients participated, 11 men and 15 women, aged from 26 to 83 years (mean 68, SD 15). Twenty-four patients were six months, two patients were two months post stroke.

RESULTS

Of the 115 problems identified during the first COPM, 64 (56%) were also identified the second time. Correlation coefficients for the scores were 0.89 (p < 0.001) for performance and 0.88 (p < 0.001) for satisfaction. Of the individual problems identified with the COPM, 25% or less were present in the standardized measures. Correlations between the scores on the COPM and the standardized measures were low and nonsignificant, while all standardized measures correlated significantly with each other.

CONCLUSIONS

Test-retest reliability of the COPM was moderate for the item pool but was good for the performance and satisfaction scores. Discriminant validity was confirmed. Many patient-unique problems identified with the COPM were not evaluated by standardized measures.

Evaluation of manual wheelchair skills: is objective testing necessary or would subjective estimates suffice?

OBJECTIVE

To test the hypothesis that subjective estimates of the ability to perform manual wheelchair skills, by wheelchair users and the therapists working with them, accurately reflect the results of objective testing.

DESIGN

Within-subject comparisons.

SETTING

Kinesiologic laboratory in a rehabilitation center.

PARTICIPANTS

Twenty-one wheelchair users and their therapists.

INTERVENTIONS

The wheelchair users and their therapists subjectively estimated how the wheelchair users would perform manual wheelchair skills, followed by an objective assessment.

MAIN OUTCOME MEASURES

Wheelchair Skills Test (WST, version 2.4), a set of 50 standardized skills.

RESULTS

The Spearman correlation coefficients between the total objective and subjective scores were.95 for the wheelchair users and.75 for the therapists. The mean difference between the total objective and subjective scores was statistically significant (P=.0002) for the wheelchair users (who overestimated their abilities by an average of 17.9%). The percentage concordance between subjective and objective scores for individual skills ranged from 57.1% to 100% for the wheelchair users and 50% to 100% for the therapists, with 25% and 35% of skills, respectively, for which there were no statistically significant associations (at a Bonferroni-adjusted alpha level of.001) between the objective and subjective scores. The skills that were misestimated by both were moving the armrests away, reaching a high object, transferring out of and into the wheelchair, folding the wheelchair, incline ascent, negotiation of gravel and irregular surfaces, and small curb ascent.

CONCLUSION

Although subjective ratings by wheelchair users and their therapists provide excellent and good estimates respectively of overall manual wheelchair abilities, objective testing should be performed when accurate assessments of many specific manual wheelchair skills are required.

A comparison of the Canadian Occupational Performance Measure and the Health Assessment Questionnaire

The Canadian Occupational Performance Measure (COPM) is receiving international attention as an important assessment for directing occupational therapy interventions and measuring client-centred outcomes. The COPM measures individuals' perceptions of disability by identifying those tasks that are important to them and difficult to perform. The Health Assessment Questionnaire (HAQ) has been used extensively with persons with arthritis and measures individuals' perceived difficulty in performing predetermined tasks of daily living. The HAQ has been shown to correlate with actual performance and has reported concurrent validity with a number of similar scales. In this study, 13 participants diagnosed with rheumatoid arthritis were assessed with the COPM and the disability dimension of the HAQ. Participants scored performance limitations on both the COPM and the HAQ; the correlation coefficient between the scores was not statistically significant. However, when the COPM and the HAQ scores for similar activities were compared, a statistically significant correlation was found. These findings support the use of the COPM as a valid measure of self-reported performance.