Multiphase optimization implementation strategy for tobacco cessation interventions in primary care clinics: A cluster-randomized type 3 hybrid effectiveness-implementation trial

BISC: brief verbal intervention for smoking cessation, PHC: primary healthcare, CFIR: Consolidated Framework for Implementation Research, BWS: best-worst scaling, MOST: Multiphase Optimization Strategy, USP: unannounced standardized patient, PSU: primary sampling unit, SSU: secondary sampling unit, PPS: probability proportional to size, DSMB: Data and Safety Monitoring Board, IOF: Implementation Outcomes Framework, PSAT: Program Sustainability Assessment Tool, PRESS: Provider Report of Sustainment Scale, NPT: Normalization Process Theory, EBP: evidence-based practice.