Original Research ARTICLE
Does level of received intervention dose have an impact on the effectiveness of the social norms alcohol prevention program The GOOD Life?
- 1University of Southern Denmark, Denmark
- 2Institute for Health and Nursing Science, Charité Medical University of Berlin, Germany
Background: Few studies have assessed how social norms messages are perceived and understood by adolescents in secondary school. We examined whether the self-reported level of exposure, satisfaction and recall of a social norms intervention had an impact on the preventive effect of the intervention The GOOD Life. Furthermore, we explored which factors were associated with high recall of the intervention.
Methods: Data from pupils aged 13-17 years enrolled in a cluster-randomised controlled trial with 18 intervention schools (n=641) and 20 control schools (n=714) were analysed using multilevel regressions. The intervention provided social norms messages through three different communication elements: classroom feedback session, posters and web-application. At 3-months follow-up, pupils from the intervention schools were asked about their participation in, their satisfaction with and recall of the intervention. The effects were examined on: overestimation of peer drinking, binge drinking (5 or more drinks on one occasion) and alcohol-related harms.
Results: Regards the outcome overestimation of peer drinking higher preventive effect sizes were observed for higher levels of exposure, satisfaction and recall. Regards the outcome alcohol-related harms preventive intervention effects were observed for medium exposure and higher satisfaction. For binge drinking we found no significant effects for any level of exposure, satisfaction or recall. Higher levels of satisfaction and exposure, and female sex were associated with better recall of the intervention.
Conclusion: For higher levels of self-reported exposure, satisfaction and retention regarding the social norms messages we observed stronger intervention effects regards several outcomes suggesting that these implementation parameters are important for intervention effectiveness.
Keywords: adolescents, School-based intervention, implementation, intervention dose, binge drinking, Alcohol-related harms, norm perceptions
Received: 19 Mar 2019;
Accepted: 13 Aug 2019.
Copyright: © 2019 Vallentin-Holbech, Rasmussen and Stock. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Dr. Lotte Vallentin-Holbech, University of Southern Denmark, Odense, 5230, Denmark, email@example.com