The Association Between Chronic Pain, Substance use, and Primary Care Experience Among Veterans with Ongoing or Recent Homelessness.

Varley AL, DeRussy AJ, Jones AL, Hoge A, Gordon AJ, Richman J, Riggs KR, Gelberg L, Gabrielian S, Blosnich JR, Montgomery AE, Carey E, Kertesz SG. The Association Between Chronic Pain, Substance use, and Primary Care Experience Among Veterans with Ongoing or Recent Homelessness. Journal of general internal medicine. 2024 Oct 15.

Related HSR&D Project(s)

• IIR 15-095 – Primary Care Quality and Homeless Service Tailoring

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Abstract:

BACKGROUND: Chronic pain and problematic substance use are prevalent among Veterans with homeless experience (VHE) and may contribute to a challenging primary care experience. OBJECTIVE: To examine the association of chronic pain and problematic substance use with unfavorable primary care experiences among VHE and to explore the association of pain treatment utilization and unfavorable care experiences in VHE with chronic pain. METHODS: We surveyed VHE (n = 3039) engaged in homeless-tailored primary care at 29 Veterans Affairs Medical Centers (VAMCs). We assessed unfavorable primary care experiences with four validated Primary Care Quality-Homeless (PCQ-H) scales: multivariable logistic regressions explored associations between unfavorable care experiences for VHE with chronic pain and problematic substance use, chronic pain alone, problematic substance use alone, or neither. We then examined the association between receipt of pain treatments and unfavorable experiences among VHE with chronic pain. Last, we identified PCQ-H items that had the greatest difference in unfavorable response rates between VHE with and without chronic pain. RESULTS: The prevalence of unfavorable primary care experience was higher on all four scales for patients reporting chronic pain (with or without problematic substance use) (all p < 0.001), but not for problematic substance use alone, compared to VHE with neither pain nor problematic substance use. In analyses limited to VHE with chronic pain, those on long-term opioids were less likely to report an unfavorable experience (OR = 0.49, 95%CI 0.34-0.69). Receipt of occupational therapy was associated with lower odds of reporting an unfavorable experience (OR = 0.83, 95%CI 0707-0.98). PCQ-H items related to trust, relationships, and provider communication had the greatest differences in dissatisfaction ratings (all p < 0.001). CONCLUSIONS: Chronic pain is associated with unfavorable primary care experiences among VHE, potentially contributing to poor care outcomes. Strategies are needed to enhance patient-provider trust and communication and increase VHE's access to effective pain treatments.