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Randomized Trial of Chronic Pain Self-Management Program in the Community or Clinic for Low-Income Primary Care Patients

B. Turner,Yuanyuan Liang,M. Simmonds,Natalia Rodríguez,Raudel Bobadilla,Z. Yin

Published 2018 in Journal of general internal medicine

ABSTRACT

BackgroundPatients with chronic pain often lack the skills and resources necessary to manage this disease.ObjectiveTo develop a chronic pain self-management program reflecting community stakeholders’ priorities and to compare functional outcomes from training in two settings.DesignA parallel-group randomized trial.ParticipantsEligible subjects were 35–70 years of age, with chronic non-cancer pain treated with opioids for >2 months at two primary care and one HIV clinic serving low-income Hispanics.InterventionsIn one study arm, the 6-month program was delivered in monthly one-on-one clinic meetings by a community health worker (CHW) trained as a chronic pain health educator, and in the second arm, content experts gave eight group lectures in a nearby library.Main MeasuresFive times Sit-to-Stand test (5XSTS) assessed at baseline and 3 and 6 months. Other reported physical and cognitive measures include the 6-Min Walk (6 MW), Borg Perceived Effort Test (Borg Effort), 50-ft Speed Walk (50FtSW), SF-12 Physical Component Summary (SF-12 PCS), Patient-Specific Functional Scale (PSFS), and Symbol–Digit Modalities Test (SDMT). Intention-to-treat (ITT) analyses in mixed-effects models adjust for demographics, body mass index, maximum pain, study arm, and measurement time. Multiple imputation was used for sensitivity analyses.Key ResultsAmong 111 subjects, 53 were in the clinic arm and 58 in the community arm. In ITT analyses at 6 months, subjects in both arms performed the 5XSTS test faster (−4.9 s, P = 0.001) and improved scores on Borg Effort (−1, P = 0.02), PSFS (1.6, P < 0.001), and SDMT (5.9, P < 0.001). Only the clinic arm increased the 6 MW (172.4 ft, P = 0.02) and SF-12 PCS (6.2 points, P < 0.001). 50ftSW did not change (P = 0.15). Results were similar with multiple imputation. Five falls were possible adverse events.ConclusionsIn low-income subjects with chronic pain, physical and cognitive function improved significantly after self-management training from expert lectures in the community and in-clinic meetings with a trained health educator.

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