This study will employ a single arm, multiple case study design using a mixed methods approach to examine the adoption, implementation, and reach of EIMG across Prisma Health primary care clinics (i.e., clinic workflow, referral process), leading to patient enrollment in a community-based, evidence-informed PA program. Eligible Prisma Health primary care clinics that have not yet received EIMG onboard training and activation will be provided with the opportunity to adopt EIMG as a part of their clinic practice and patient workflow process. A mixed methods approach will examine contextual factors influencing decisions to adopt/not adopt EIMG.

Clinic champions at clinics adopting EIMG will be provided with a brief pre-recorded training video to disseminate to their clinic staff on how to provide their patients with an EIMG referral. All providers at the clinic will have the ability to screen and identify physically inactive patients and provide them with an EIMG referral. Initial implementation and reach of EIMG at adopting clinics will be tracked for approximately four months following the dissemination of the pre-recorded training video. After four months, the EIMG team will provide a more in-depth, standardized clinic onboard training following established protocols iteratively developed and refined through the initial addition of EIMG clinics between 2016-19. The onboard training, which consists of an overall presentation of the EIMG program and specific information on placing the referral order and patient workflow, has been adapted for virtual environments due to its notable added benefits, including its recording to serve as an ongoing reference tool for those who cannot attend initial training and incoming staff. Implementation and reach of EIMG will be tracked for an additional four months after the onboard training.

Referred patients will have the opportunity to enroll in an evidence-informed, 12-week PA program at local community PA facilities (e.g., YMCAs) that partner with EIMG. Upon enrollment and at the completion of the 12-week PA program, patients will undergo an assessment battery that includes the completion of a patient health questionnaire, anthropometric assessments (i.e., height, weight, waist circumference) and an evaluation of their mental and emotional health (i.e., PROMIS tool, PHQ-9). The RE-AIM framework will inform the assessment of implementation outcomes (i.e., adoption, implementation, and reach), while the i-PARIHS framework will be used to examine contextual factors (i.e., determinants) influencing clinic level outcomes. Patient demographics, health outcomes, healthcare utilization and costs of eligible patients at participating primary care clinics, both before and after EIMG onboarding, will be extracted from the Prisma Health electronic health record (EHR) system. Data will be compared between patients that receive EIMG referrals and matched controls at clinics that do not adopt EIMG: 1) the impact of EIMG on changes in health outcomes, and 2) the impact of EIMG on healthcare costs. These estimates will be used as the basis for cost-effectiveness analyses of EIMG and serve as the foundation for long-term evaluation modeling approaches to incorporate changes in longer-term secondary health outcomes (e.g., stroke, acute myocardial infarction) on healthcare costs.