Validity and utility of the Canadian occupational performance measure as an outcome measure in a craniofacial pain center

Temporomandibular disorders and orofacial pain may cause impairment and functional limitations in activities involving the face, especially the mouth. The impact of chronic pain on occupational performance in this population has not been studied. The validity and utility of the Canadian Occupational Performance Measure (COPM) as an outcome measure in an orofacial pain setting was assessed, including specific occupational performance problems reported by individuals with temporomandibular disorder, orofacial pain, or both. Participants were patients (N = 29) referred for treatment of chronic orofacial pain at a tertiary, university-based pain center. Assessments occurred prior to standard occlusal splint therapy and 8 weeks after the initial evaluation. Measures included the COPM, the Pain Disability Index, and numerical pain rating scales. The COPM scores showed significant correlations with other measures. Study participants identified a diverse range of occupational performance problems. The COPM may have utility as an outcome measure for use in orofacial pain. It provides the treatment team with data related to occupational performance and patient satisfaction.