Verlagslink DOI: | 10.3389/fpubh.2021.659875 | Titel: | Effects of a brief web-based “social norms”-intervention on alcohol, tobacco and cannabis use among German university students : results of a cluster-controlled trial conducted at eight universities | Sprache: | Englisch | Autorenschaft: | Pischke, Claudia Ruth Helmer, Stefanie Maria Pohlabeln, Hermann Muellmann, Saskia Schneider, Sven Reintjes, Ralf Schmidt-Pokrzywniak, Andrea Girbig, Maria Krämer, Alexander Icks, Andrea Walter, Ulla Zeeb, Hajo |
Herausgeber*In: | Dietz, Pavel | Schlagwörter: | alcohol; cannabis; cluster-controlled trial; substance use; University context; “social norms”-intervention | Erscheinungsdatum: | 14-Mai-2021 | Verlag: | Frontiers | Zeitschrift oder Schriftenreihe: | Frontiers in Public Health | Zeitschriftenband: | 9 | Zusammenfassung: | Background and Aim: “Social norms” (SN)-interventions are aimed at changing existing misperceptions regarding peer substance use by providing feedback on actual norms, thereby affecting personal substance use. It is unknown whether SN-intervention effects previously demonstrated in US students can be replicated in German students. The aim of the INSIST-study was to examine the effects of a web-based SN-intervention on substance use. Design: Cluster-controlled trial. Setting: Eight Universities in Germany. Participants and Measurements: Students were recruited at four intervention vs. four delayed intervention control Universities. 4,463 students completed baseline, 1,255 students (59% female) completed both baseline and 5-months follow-up web-based surveys on personal and perceived peer substance use. Intervention participants received feedback contrasting personal and perceived peer use with previously assessed use and perceptions of same-sex, same-university peers. Intervention effects were assessed via multivariable mixed logistic regression models. Findings: Relative to controls, reception of SN-feedback was associated with higher odds for decreased alcohol use (OR: 1.91, 95% CI 1.42-2.56). This effect was most pronounced in students overestimating peer use at baseline and under or accurately estimating it at follow-up (OR: 6.28, 95% CI 2.00-19.8). The OR was 1.33 (95% CI 0.67-2.65) for decreased cannabis use in students at intervention Universities and was statistically significant at 1.70 (95% CI 1.13-2.55) when contrasting unchanged and decreased with increased use. Regarding tobacco use and episodes of drunkenness, no intervention effects were found. Conclusions: This study was the first cluster-controlled trial suggesting beneficial effects of web-based SN-intervention on alcohol and cannabis use in a large sample of German University students. Clinical Trial Registration: The trial registration number of the INSIST-study is DRKS00007635 at the “German Clinical Trials Register.” |
URI: | https://hdl.handle.net/20.500.12738/17146 | ISSN: | 2296-2565 | Begutachtungsstatus: | Diese Version hat ein Peer-Review-Verfahren durchlaufen (Peer Review) | Einrichtung: | Department Gesundheitswissenschaften Fakultät Life Sciences |
Dokumenttyp: | Zeitschriftenbeitrag | Hinweise zur Quelle: | article number: 659875 |
Enthalten in den Sammlungen: | Publications without full text |
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