Factors influencing implementation dose and fidelity thereof and related student outcomes of an evidence-based national HIV prevention program

Background Teachers’ implementation of evidence-based prevention programs in schools is inconsistent. Using data gathered from the national implementation among grade six students in The Bahamas of an evidence-based HIV intervention [Focus on Youth in the Caribbean (FOYC)], this study examines differences in the degree of implementation (“dose”) and adherence to the core activities (“fidelity of implementation”) by teachers according to theoretically and historically relevant teachers’ characteristics, attitudes, and experiences pre-intervention and post-intervention. The relationship of implementation dose and implementation fidelity is assessed according to student outcomes.