The Social Competence Promotion Program among Young Adolescents (SCPP-YA) in Chile (“Mi Mejor Plan”) for substance use prevention among early adolescents: study protocol for a randomized controlled trial

Background: Substance use is highly prevalent among children and adolescents in Chile, and it is known how it impacts their health and social adjustment. The call for effective prevention of substance use among children adolescents has resulted in numerous school-based programs, and particularly, the Social Competence Promotion Program among Young Adolescents (SCPP-YA) has been proved to be successful for promoting social and problem-solving skills in addition to preventing substance abuse in the US population. The purpose of this study is to test the effectiveness of the Social Competence Promotion Program among Young Adolescents (SCPP-YA) in Chile (“Mi Mejor Plan”). Methods: This is a cluster randomized controlled trial, parallel-group type, where “Mi Mejor Plan” is compared to standard school preventive curricula in control schools. A total of 10 schools and 600 adolescents are expected to be recruited and randomized with 1:1 allocation. During formative work, the SCPP-YA program was culturally adapted to Chile. The effectiveness of this program will be assessed using the European Drug Addiction Prevention Trial Questionnaire (EU-Dap), measuring substance use prevalence and risk and protective factors in baseline, post-intervention, and 4 months after the end of the intervention. Discussion: The proposed study will be the first to test the effectiveness of the Social Competence Promotion Program among Young Adolescents (SCPP-YA) in Chile in a cluster randomized control trial and also the first study evaluating this program in Spanish-speaking Latin America. SCPP-YA has been implemented successfully in the USA. Thus, if the effects of the program are positive, wide implementation in Chile and Latin American countries is possible soon. Trial registration: Clinical Trials NCT04236947. Registered on January 22, 2020.