Evaluating chronic disease approaches to ameliorate tobacco-related health disparities: Study protocol of a hybrid type 1 implementation-effectiveness trial.

Background: Black, Indigenous, and People of Color (BIPOC) communities experience higher prevalence of cardiovascular disease and related chronic conditions compared to White communities due to disparities in tobacco exposure. Smoking can be effectively treated but evidence-based treatments are less likely to be offered to or used by BIPOC patients. We present the study protocol of the Smoking Cessation Outreach for Racial Equity (SCORE) trial that tests the effect of adding longitudinal care coordination to current standard of care for smoking cessation to promote health equity among BIPOC patients. Methods: Longitudinal Proactive Outreach (LPO; 4 culturally tailored outreach call cycles over one year by motivational interviewing trained counselors to connect patients to cessation counseling and medication) will be added to the current standard of care, Ask-Advise-Connect (AAC; primary care providers asking all patients if they smoke, and if smoking, advising to quit and connecting to treatment). We will conduct a hybrid type 1 implementation-effectiveness trial to examine the direct effect of AAC + LPO (a multilevel health system intervention) vs. AAC on population-level combustible tobacco abstinence at 18 months and treatment utilization among 2000 BIPOC adults who smoke across two healthcare systems in Minnesota. Participants will be surveyed at 6, 12, and, 18 months post-enrollment to assess outcomes. The primary outcome is biochemically confirmed combustible cigarette abstinence at 18 months. Discussion: LPO has potential to promote health equity by addressing barriers caused by structural racism, including access to care, care fragmentation, and provider racism, by systematically reaching out to all BIPOC patients who smoke. Clinicaltrialsgov: NCT05671380.