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

Pischke CR, Helmer SM, Pohlabeln H, Muellmann S, Schneider S, Reintjes R, Schmidt-Pokrzywniak A, Girbig M, Krämer A, Icks A, Walter U, et al. (2021)
Frontiers in Public Health 9: 659875.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Pischke, Claudia Ruth; Helmer, S. M.; Pohlabeln, H.; Muellmann, S.; Schneider, S.; Reintjes, R.; Schmidt-Pokrzywniak, A.; Girbig, M.; Krämer, AlexanderUniBi ; Icks, A.; Walter, U.; Zeeb, Hajo
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Abstract / Bemerkung
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.
Stichworte
“ social norms” -intervention; University context; cluster-controlled trial; substance use; alcohol; cannabis
Erscheinungsjahr
2021
Zeitschriftentitel
Frontiers in Public Health
Band
9
Art.-Nr.
659875
eISSN
2296-2565
Page URI
https://pub.uni-bielefeld.de/record/2955355

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Pischke CR, Helmer SM, Pohlabeln H, et al. 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. Frontiers in Public Health . 2021;9: 659875.
Pischke, C. R., Helmer, S. M., Pohlabeln, H., Muellmann, S., Schneider, S., Reintjes, R., Schmidt-Pokrzywniak, A., et al. (2021). 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. Frontiers in Public Health , 9, 659875. https://doi.org/10.3389/fpubh.2021.659875
Pischke, C. R., Helmer, S. M., Pohlabeln, H., Muellmann, S., Schneider, S., Reintjes, R., Schmidt-Pokrzywniak, A., Girbig, M., Krämer, A., Icks, A., et al. (2021). 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. Frontiers in Public Health 9:659875.
Pischke, C.R., et al., 2021. 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. Frontiers in Public Health , 9: 659875.
C.R. Pischke, et al., “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”, Frontiers in Public Health , vol. 9, 2021, : 659875.
Pischke, C.R., Helmer, S.M., Pohlabeln, H., Muellmann, S., Schneider, S., Reintjes, R., Schmidt-Pokrzywniak, A., Girbig, M., Krämer, A., Icks, A., Walter, U., Zeeb, H.: 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. Frontiers in Public Health . 9, : 659875 (2021).
Pischke, Claudia Ruth, Helmer, S. M., Pohlabeln, H., Muellmann, S., Schneider, S., Reintjes, R., Schmidt-Pokrzywniak, A., Girbig, M., Krämer, Alexander, Icks, A., Walter, U., and Zeeb, Hajo. “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”. Frontiers in Public Health 9 (2021): 659875.
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