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Friday, June 17, 2011

The Örebro prevention program revisited: A cluster-randomized effectiveness trial of program effects on youth drinking


This study aimed to assess the effectiveness of the Örebro prevention program (ÖPP), an alcohol misuse prevention programme that aims to reduce youth drinking by changing parental behaviour.
Cluster-randomized trial, with schools randomly assigned to the ÖPP or no intervention.
Forty municipal schools in 13 counties in Sweden.
1752 students in the 7th grade and 1314 parents were assessed at baseline. Students' follow-up rates in the 8th and 9th grades were 92.1% and 88.4% respectively.
Classroom questionnaires to students and postal questionnaires to parents were administered before randomization and 12 and 30 months post-baseline.
Two-level logistic regression models, under four different methods of addressing the problem of loss to follow up, revealed a statistically significant programme effect for only one out of three drinking outcomes under one loss-to-follow-up method, and that effect was only observed at the 12-month follow up.
The Örebro prevention programme as currently delivered in Sweden does not appear to reduce or delay youth drunkenness.


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