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.

In terms of descriptive changes in prevalence over time among groups, it is noteworthy that the neglectful parenting style remains relatively stable in the control group (25%, 25%, and 26%, baseline, 12 and 24-month follow-up respectively) and shows a decreasing trend in the intervention group (33%, 27%, and 28%, baseline, 12 and 24-month follow-up relatively).

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