Assessing Pain, Patient Reported Outcomes and Complementary and Integrative Health

Overview

The APPROACH Study (Assessing Pain, Patient-Reported Outcomes and Complementary and Integrative Health) assesses the effects of use of practitioner-delivered CIH therapies alone compared to the combination of self-care and practitioner-delivered CIH therapies among Veterans with chronic musculoskeletal pain. The APPROACH study is predominately conducting a secondary analysis of patient-reported data being collected by the Veterans Health Administration's (VA) Office of Patient Centered Care and Cultural Transformation among Veterans receiving care at one of 18 VA medical centers. Those 18 facilities received funding to expand availability of CIH therapies as part of the Comprehensive Addiction and Recovery Act of 2016. That patient-reported data is being supplemented with VA electronic health record data and data on the 18 medical centers' business practices (nudges, the instrumental variable). Practitioner-delivered therapies under study include chiropractic care, acupuncture, and therapeutic massage; self-care therapies include Tai Chi/Qigong, yoga, and meditation. The primary outcomes are improvement in pain severity and pain interference, assessed using the Brief Pain Inventory (BPI), six months after initiating CIH therapies compared to baseline. Patients will enter treatment groups based on the CIH therapies they use, as randomizing patients to specific therapies would require withholding therapies routinely offered at VA. The investigators will address selection bias and confounding by using sites' variations in business practices and other encouragements (nudges) to receiving different CIH therapies as a surrogate for direct randomization using instrumental variables econometric methods.

Design: The investigators are employing a quasi-experimental encouragement study design in which subjects are able to choose their own CIH therapies, but some are offered extra encouragements (nudges) to choose specific CIH therapies. Instead of being randomized to a CIH therapy, individuals will enter one of three study groups - Veterans Using Practitioner Delivered CIH Therapies Only, Veterans Using Self-Care CIH Therapies Only, or Veterans Using a Combination of Practitioner-Delivered and Self-Care CIH Therapies (Dual-Care) - based on what CIH therapies they used six months after they initiate any CIH therapy. Although accrual to study group is not random, some sites have strong business practices/nudges that lead to considerable variation in which CIH therapies patients use. The variation induced by these business practices/nudges provides a quasi-experimental natural experiment that can be assessed through an instrumental variables analytic approach. The purpose of using business practices as an instrument for accruing patients to treatment groups, similar to the use of randomization, is to reduce potential selection and confounding bias. The six-month treatment window will allow for patients to initiate one type of CIH therapy and add additional CIH therapies based on business practices/nudges at their site within the evaluation period. The CIH therapies that patients receive will be as they are delivered by the 18 VHA Whole Health flagship study sites and community care practices. The APPROACH study was initially envisioned to examine primary and secondary outcomes for the above-named three study groups. Due to the study's pragmatic design and sampling approach, the sample size of the Veterans Using Self-Care CIH Therapies Only group did not meet the minimum threshold necessary to detect between-group differences of interest. It was therefore determined that study revisions would be necessary. Sites: The study sites are the VA's 18 Whole Health Flagship sites: VA Boston Health Care System, VA New Jersey Health Care System, Erie VAMC, Beckley VAMC, W. G. (Bill) Hefner VAMC, Atlanta VAMC, Tampa VAMC, Tennessee Valley Health Care System, Aleda E. Lutz VAMC, Tomah VAMC, St. Louis VA Health Care System, Central Arkansas Veterans Healthcare System, South Texas Veterans Health Care System, Salt Lake City VAMC, VA Portland Health Care System, Palo Alto VAMC, Tucson VAMC, VA Nebraska-Western Iowa Health Care System). Secondary Data from the VA Office of Patient Centered Care and Cultural Transformation's Complementary and Integrative Health Therapy Patient Experience Survey: The APPROACH study is predominately conducting a secondary analysis of patient-reported data being collected by VA OPCC\&CT's four timepoint survey (baseline and months 1, 3, 6). Almost all of the outcomes listed below are from that survey.