Fidelity
In this study, fidelity measured the extent of implementation of the ToyBox Malaysia intervention on the four behaviors (drinking, snacking, sedentary behavior, and physical activity) as compared to the initial planning of the implementation time plan. It also assessed the implementation of classroom environmental changes, children’s actual behaviors, classroom activities, and delivery of materials to parents according to the time plan and how these materials were delivered to the parents. In addition, the perceptions and experiences of the teachers, assistants, and parents on the implementation, impact, and sustainability of the intervention were obtained using FGD between November and December 2018 after the completion of the project. A total of nine FGD sessions using semi-structured interview questions were conducted with 23 teachers, 10 assistants, and 18 parents. The sessions were facilitated by two trained research personnel and audio-recorded. Only a summary of the major themes will be presented in this paper as the detailed findings have been published by Lee et al. [