Trial reportBMC public health2025
Does the Brazilian version of the strengthening families program (Familias Fortes) reduce adolescent substance use and change parental behavior? Evidence from a 2-year follow-up study.
Trial report in BMC public health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
2 citing papers in PubMed.
- Family-school-hospital collaboration model for urinary system tumor early screening education.Frontiers in public health · 2026Article
- Effect of Parental Behaviors on Adolescents' Binge Drinking and Externalizing and Internalizing Problems Via Adolescents' Future Orientation.Research on child and adolescent psychopathology · 2025Article
Corrections and comments
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe Brazilian adaptation of the Strengthening Families Program (SFP), known as Famílias Fortes (FF-BR 10-14), has demonstrated positive short-term effects on parental behavior. This study aims to evaluate the 12- and 24-month follow-ups of the FF-BR 10-14, focusing on parental outcomes and substance use prevention.
methodsThis is a parallel-cluster randomized controlled trial (RCT) involving 1610 participants (805 adolescents aged 10-14 and 805 caregivers). Conducted across 60 Social Assistance Reference Centers (SARC) in 12 municipalities in Brazil, the trial evaluates the effectiveness of the FF-BR 10-14 program. This study presents data collected at three time points: baseline, 12 and 24 months of follow-up. Multilevel mixed-effects models assessed the program effects on parental and adolescent outcomes (drug use and family behavior), with adjustments for sociodemographic factors.
resultsThe results reveal no statistically significant differences between the groups in terms of adolescent drug use after either follow-up. However, participating in the program shows a reduction in negligent parental style (aOR 0.46, 95%CI 0.22;0.97), parental binge drinking (aOR 0.24, 95%CI 0.08; 0.74), as well as an increase in parental ability to set clear rules regarding their children's drug use (β 0.43, 95%CI 0.03; 0.83) and an improvement in adolescents' skills to resolve family conflicts (β 0.79, 95%CI 0.11; 1.46) and to manage stress (β 0.65, 95%CI 0.16; 1.15).
conclusionThe Famílias Fortes program shows positive effects on mediators, such as parenting practices and adolescent coping skills, but not on the primary outcomes of adolescent substance use. These findings highlight the program's role in improving the family environment and supporting prevention efforts through intermediary behaviors.
trial registrationThe study was registered in the Brazilian Ministry of Health Register of Clinical Trials (REBEC), under protocol no. RBR-5hz9g6z ( https://ensaiosclinicos.gov.br/rg/RBR-5hz9g6z ) - July 8th, 2022.
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