| Sumario: | Background: The integrative medicine (IM) clinic is an innovative care model that may increase access to guideline-concordant nonpharmacologic treatment use in healthcare delivery systems for prevalent conditions such as low back pain (LBP). Objective: To describe the use and effectiveness of IM services for LBP in IM clinics. Research Design: Prospective cohort study. Subjects: Adult patients with LBP enrolled at seventeen IM clinics. Measures: Patterns of IM service use were assessed over 12 months. Changes in clinical outcomes were assessed between index visit and 12-month follow-up using linear mixed-effects models. Primary (pain interference, physical function) and secondary (pain intensity, anxiety, depression, fatigue, sleep disturbance, social participation) outcomes were obtained from the PROMIS-29 instrument. Results: We identified 660 participants with LBP (mean age = 51.6 years, 75% female). Over the 12-month study period, common IM services were IM consults (56%), acupuncture (44%), chiropractic care (24%), physical therapy (19%), and massage (17%). Over two-thirds (70%) of participants received at least one guideline-concordant nonpharmacologic treatment. Participants with follow-up outcome data (n = 443, 67%) reported a modest reduction in pain interference with life activities in the short- and long-term (2-month mean difference [MD] = −1.47, 95%CI = −2.98, −0.64; 12-month MD = −1.98, 95%CI = −3.12, −0.88). By contrast, improvements in physical function were not statistically or clinically significant (2-month MD = 0.37, 95%CI = −0.28, 1.01; 12-month MD = 0.69, 95%CI = −0.31, 1.69). At 12 months, small improvements were observed on all secondary outcomes (pain intensity, anxiety, depression, and social participation) except fatigue and sleep disturbance. Conclusions: Most patients with LBP receiving care at IM clinics received at least one guideline-recommended nonpharmacologic treatment. However, improvements on clinical outcomes were relatively small. Additional multi-site studies are needed to explore the optimal implementation approach.
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