2.1. Study Design
±2
Dyads of one adult parent and one 6th–8th grade (11–14 years old) adolescent child from the same household were enrolled in a 3-arm parallel design cluster randomized controlled trial aimed at testing the efficacy of Families Preparing the New Generation Plus (FPNG+), a parenting intervention designed to target adolescent healthy eating and substance use prevention simultaneously. Participant dyads were recruited between January 2019 and February 2020 from local public middle schools and randomized at the school level to the FPNG+ intervention, the original FPNG intervention targeting substance use prevention only, or the Realizing the American Dream (RAD) intervention, a control intervention focusing on academic success that did not include content related to healthy eating or substance use prevention strategies. Data were collected from parents and adolescents via survey at baseline (T1), at the end of the 10-week interventions (T2), and at 16 weeks post-intervention (±2 weeks; T3). A more detailed description of the study design has been published elsewhere [