Ensuring that a school-based smoking cessation program for adolescents is successful: A realist evaluation of the TABADO program and the program theory.

These findings allowed us to transform the TABADO program into a new optimized strategy, TABADO2, which is theory-based. Our research helps to explain why adolescent smokers enroll and stay in a school-based smoking cessation program. TABADO2 needs to be considered in a more comprehensive way than the original research-based TABADO, and should be tailored to its implementation context.