Vallentin-Holbech Lotte, Rasmussen Birthe Marie, Stock Christiane
Unit for Health Promotion Research, Department of Public Health, University of Southern Denmark, Niels Bohrs Vej 9-10, 6700 Esbjerg, Denmark.
Prev Med Rep. 2018 Oct 28;12:304-311. doi: 10.1016/j.pmedr.2018.10.019. eCollection 2018 Dec.
The study aimed to investigate if the school-based social norms intervention was effective in reducing misperceptions, heavy alcohol use and alcohol-related harms among Danish pupils aged 13-17 years. In total 38 schools were included in a cluster-randomised controlled trial and allocated to either intervention ( = 641) or control group ( = 714) during 2015/2016. Both groups completed an online survey before the intervention and 3 months after baseline. intervention provided normative feedback tailored for each school-grade using three communication channels: classroom sessions, posters and web application. Outcome measures were overestimation of peers' lifetime binge drinking, binge drinking (5 or more drinks on one occasion) and alcohol-related harms. Intervention effects at follow-up were examined using multilevel logistic regression models. Pupils in the intervention group were less likely to overestimate peers' lifetime binge drinking compared to those in the control group (OR: 0.52, 95%CI: 0.33-0.83) and were less likely to report two or more alcohol-related harms (OR: 0.59, 95%CI: 0.37-0.93). Overall, no significant effect of the intervention was found on binge drinking. However, among pupils stating it would be ok, if they drank more ( = 296), a preventive effect was found on binge drinking four or more times during the last 30 days (OR: 0.37, 95%CI: 0.15-0.95). Additionally, the intervention effect on overestimation was higher among pupils who reported binge drinking at baseline. Receiving the intervention had a positive effect on norm perceptions and alcohol-related harms. We also found that the intervention effect differed by baseline status of alcohol use.
该研究旨在调查以学校为基础的社会规范干预措施是否能有效减少13至17岁丹麦学生的误解、大量饮酒及与酒精相关的危害。在2015/2016年期间，共有38所学校被纳入一项整群随机对照试验，并被分配到干预组（n = 641）或对照组（n = 714）。两组在干预前和基线后3个月都完成了一项在线调查。干预组通过三种沟通渠道为每个年级提供量身定制的规范反馈：课堂教学、海报和网络应用程序。结果指标包括对同龄人终身狂饮的高估、狂饮（一次饮用5杯或更多）以及与酒精相关的危害。使用多水平逻辑回归模型检查随访时的干预效果。与对照组相比，干预组的学生高估同龄人终身狂饮的可能性较小（比值比：0.52，95%置信区间：0.33 - 0.83），报告两种或更多与酒精相关危害的可能性也较小（比值比：0.59，95%置信区间：0.37 - ？0.93）。总体而言，未发现干预对狂饮有显著影响。然而，在表示如果饮酒更多也可以的学生中（n = 296），发现干预对过去30天内四次或更多次狂饮有预防作用（比值比：0.37，95%置信区间：0.15 - 0.95）。此外，在基线时报告有狂饮行为的学生中，干预对高估的影响更大。接受干预对规范认知和与酒精相关的危害有积极影响。我们还发现，干预效果因饮酒的基线状态而异。 （注：原文中“95%CI: 0.37-0.93”处疑似有误，多了一个问号，根据英文内容推测此处应为0.93）
