Purpose
Adults with diabetes mellitus (DM) suffer often from chronic pain, yet evidence‐based interventions for comorbid pain and DM are scarce. We tested the effect of a peer‐led cognitive behavioral training (CBT) intervention on pain self‐efficacy (PSE), pain intensity, and pain‐related functional limitations (PRFL) in adults with DM, 1 year after trial initiation.
Methods
The yearlong “Living Healthy” cluster‐randomized trial included 230 residents of rural Alabama with DM, who reported pain in the past month; communities were treated as clusters. Intervention participants received a peer‐delivered 8‐session structured CBT intervention in the context of diabetes self‐management; attention control arm participants received a peer‐delivered 8‐session general health education program. Outcomes included PSE (Arthritis Self‐Efficacy Scale, range 10‐100); pain intensity (McGill Pain Questionnaire, range 0‐45); and PRFL (Western Ontario and McMaster Universities Osteoarthritis Index scale, range 0‐100). We examined control‐intervention differences in changes in outcome scores from baseline to 3‐month and 12‐month follow‐up, adjusted for clustering.
Findings
The 195 participants with follow‐up data were aged 59 ± 10.4 years, 96% were African American, 79% were women, and 80% reported pain on the day of baseline data collection. At 3‐month follow‐up, PSE increased more for intervention (21‐point increase) than control (5‐point increase) participants (P for control‐intervention (C‐I) difference in change < .001); pain intensity decreased for both groups; and PRFL decreased only for intervention participants (–11 score; P for C‐I difference in change < .001). Results were sustained at 12 months, and pain intensity significantly improved in only the intervention arm (P for C‐I difference in change = .01).
Conclusions
This peer‐delivered CBT intervention improved pain self‐efficacy, pain‐related functional limitations, and pain intensity over 12 months among rural participants with DM and chronic pain.