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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Components evaluation of a web-based personalized normative feedback intervention for alcohol use among college students: a pragmatic randomized controlled trial with a dismantling design

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Author(s):
Bedendo, Andre [1, 2] ; McCambridge, Jim [2] ; Gaume, Jacques [3] ; Souza, Altay A. L. [4] ; Formigoni, Maria Lucia O. S. [4] ; Noto, Ana R. [1]
Total Authors: 6
Affiliation:
[1] Univ Fed Sao Paulo, UNIFESP, Dept Psychobiol, Res Ctr Hlth & Subst Use NEPSIS, Rua Botucatu, 862-1 Andar, BR-04023062 Sao Paulo, SP - Brazil
[2] Univ York, Fac Sci, Dept Hlth Sci, York, N Yorkshire - England
[3] Lausanne Univ Hosp, Alcohol Treatment Ctr, Lausanne - Switzerland
[4] Univ Fed Sao Paulo, UNIFESP, Sao Paulo - Brazil
Total Affiliations: 4
Document type: Journal article
Source: ADDICTION; v. 115, n. 6 JAN 2020.
Web of Science Citations: 0
Abstract

Aims To evaluate the effects of the two main components of a personalized normative feedback (PNF) {[}normative feedback only (NFO); and consequences feedback only (CFO)] compared with the full intervention (PNF) in reducing alcohol use and consequences. Design Three-arm pragmatic randomized controlled trial with dismantling design and 1-, 3- and 6-month follow-ups. Setting Web-based among Brazilian college students. Participants College students (aged 18-30 years) who reported alcohol use in the last 3 months (n = 5476). Interventions (1) Full PNF (a) drinking profile; (b) normative comparisons; (c) practical costs; (d) alcohol consequences; (e) strategies to decrease risks; (2) NFO components (a), (b) and (e); or (3) CFO components (c), (d) and (e). Measurements The primary outcome was change in Alcohol Use Disorders Identification Test (AUDIT) score; secondary outcomes were the number of alcohol consequences, drinking frequency and typical/maximum number of drinks. We used mixed models with multiple imputation and a pattern-mixture model to account for attrition. Subgroup analyses considered participant motivation to know more about their drinking (less motivated versus motivated). Findings Dismantled components reduced rather than increased AUDIT score compared to full PNF, with significant effects for NFO at 1 month {[}b = -0.23, 95% confidence interval (CI) = -0.46; -0.002] and for CFO at 3 months (b = -0.33, 95% CI = -0.62; -0.03). Compared with PNF, NFO reduced the number of alcohol consequences at 1 month (b = -0.16, 95% CI = -0.25; -0.06) and drinking frequency at 3 months (b = -0.42, 95% CI = -0.79; -0.05), but increased the number of typical drinks at 6 months (b = 0.38, 95% CI = 0.04; 0.72). CFO reduced drinking frequency at 3 months (b = -0.37, 95% CI = -0.73; -0.01). Attrition models confirmed all results, except for the NFO effect on typical drinks and drinking frequency. Subgroup analyses indicated superiority of dismantled components among the students less motivated in knowing more about their drinking. Conclusions There was no evidence that either the normative or the consequences components of a web-based personalized normative feedback intervention to reduce alcohol use and its consequences contributed to intervention effects. There was some evidence of adverse effects of personalized normative feedback, and these results were driven by 20% of participants who were less motivated in knowing more about their drinking. (AU)

FAPESP's process: 18/12729-9 - Studying the mechanism of behavior change of a web-based brief intervention for college drinkers through mediation and moderation analyses
Grantee:André Bedendo de Souza
Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
FAPESP's process: 13/20341-7 - Development and evaluation of effectiveness of an internet-based brief intervention for alcohol use among Brazilian college students
Grantee:André Bedendo de Souza
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 15/19472-5 - Innovative interventions related to alcohol consumption problems in Brazil: search for new approaches aimed at an old public health issue
Grantee:Ana Regina Noto
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 17/13831-9 - Analysis of mediators and moderators of an internet-based intervention for alcohol use among college students
Grantee:André Bedendo de Souza
Support Opportunities: Scholarships in Brazil - Post-Doctoral