Journal of Child Psychology and Psychiatry · 2005 · 93 citations · 36 references
Public HealthEducational PsychologyHealth PromotionAdolescent HealthBehavioral HealthMental Health PromotionAdolescent DepressionPrevention Of Mental DisordersPrimary PreventionControl Group DesignMatched Control GroupPrevention Program ImplementationPreventive Mental Health EducationSchool-based Behavior InterventionSchool-based Mental Health PromotionSelf-efficacy For PreventionSocial Network Influence
BACKGROUND: Depressive disorders in adolescents are a widespread and increasing problem. Prevention seems a promising and feasible approach. METHODS: We designed a cognitive-behavioral school-based universal primary prevention program and followed 347 eighth-grade students participating in a randomized controlled trial for three months. RESULTS: In line with our hypothesis, participants in the prevention program remained on a low level of depressive symptoms, having strong social networks. The control group showed increasing depressive symptoms and a reduced social network. Contrary to our expectations, students low in self-efficacy benefited more from the program than high self-efficient students. Social network did not mediate the relationship between participation in the prevention program and changes in depressive symptoms. CONCLUSIONS: Our results show that the prevention program had favorable effects. Further research is needed to explore the impact of self-efficacy on the effects of prevention programs.
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Statistical Power Analysis for the Behavioral Sciences
Keith E. Muller, Jacob Cohen · Technometrics · 1989 · 83.9K citations
Lenore Sawyer Radloff · Applied Psychological Measurement · 1977 · 53.3K citations · Full text
Self-efficacy: Toward a unifying theory of behavioral change.
Psychological Review · 1977 · 42.6K citations · Full text