Résumé :
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[BDSP. Notice produite par INIST-CNRS TWR0xCQo. Diffusion soumise à autorisation]. Objectives. We sought to test the efficacy of an intervention that was designed to promote social inclusion and commitment to education, in reducing among students health risk behaviors and improving emotional well-being. Methods. The design was a cluster-randomized trial in 25 secondary schools in Victoria, Australia. The subjects were 8th-grade students (aged 13 to 14 y) in 1997 (n=2545) and subsequent 8th-grade students in 1999 (n=2586) and 2001 (n=2463). The main outcomes were recent substance use, antisocial behavior, initiation of sexual intercourse, and depressive symptoms. Results. At 4-year follow-up, the prevalence of marked health risk behaviors was approximately 20% in schools in the comparison group and 15% in schools in the intervention group, an overall reduction of 25%. In ordinal logistic regression models a protective effect of intervention was found for a composite measure of health risk behaviors in unadjusted models (odds ratio [OR]=0.69 ; 95% confidence interval [CI]=0.50,0.95) and adjusted models (OR=0.71 ; Cl=0.52,0.97) for potential confounders. There was no evidence of a reduction in depressive symptoms. Conclusion. The study provides support for prevention strategies in schools that move beyond health education to promoting positive social environments.
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