J. Med. Internet Res. - The effectiveness of a Web-based personalized feedback and social norms alcohol intervention on United Kingdom university students: randomized controlled trial.

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Resumo

CKGROUND: Alcohol consumption in the student population continues to be cause for concern. Building on the established evidence base for traditional brief interventions, interventions using the Internet as a mode of delivery are being developed. Published evidence of replication of initial findings and ongoing development and modification of Web-based personalized feedback interventions for student alcohol use is relatively rare. The current paper reports on the replication of the initial Unitcheck feasibility trial.OBJECTIVE: To evaluate the effectiveness of Unitcheck, a Web-based intervention that provides instant personalized feedback on alcohol consumption. It was hypothesized that use of Unitcheck would be associated with a reduction in alcohol consumption.METHODS: A randomized control trial with two arms (control=assessment only; intervention=fully automated personalized feedback delivered using a Web-based intervention). The intervention was available week 1 through to week 15. Students at a UK university who were completing a university-wide annual student union electronic survey were invited to participate in the current study. Participants (n=1618) were stratified by sex, age group, year of study, self-reported alcohol consumption, then randomly assigned to one of the two arms, and invited to participate in the current trial. Participants were not blind to allocation. In total, n=1478 (n=723 intervention, n=755 control) participants accepted the invitation. Of these, 70% were female, the age ranged from 17-50 years old, and 88% were white/white British. Data were collected electronically via two websites: one for each treatment arm. Participants completed assessments at weeks 1, 16, and 34. Assessment included CAGE, a 7-day retrospective drinking diary, and drinks consumed per drinking occasion.RESULTS: The regression model predicted a monitoring effect, with participants who completed assessments reducing alcohol consumption over the final week. Further reductions were predicted for those allocated to receive the intervention, and additional reductions were predicted as the number of visits to the intervention website increased.CONCLUSIONS: Unitcheck can reduce the amount of alcohol consumed, and the reduction can be sustained in the medium term (ie, 19 weeks after intervention was withdrawn). The findings suggest self-monitoring is an active ingredient to Web-based personalized feedback.

Resumo Limpo

ckground alcohol consumpt student popul continu caus concern build establish evid base tradit brief intervent intervent use internet mode deliveri develop publish evid replic initi find ongo develop modif webbas person feedback intervent student alcohol use relat rare current paper report replic initi unitcheck feasibl trialobject evalu effect unitcheck webbas intervent provid instant person feedback alcohol consumpt hypothes use unitcheck associ reduct alcohol consumptionmethod random control trial two arm controlassess intervent autom person feedback deliv use webbas intervent intervent avail week week student uk univers complet universitywid annual student union electron survey invit particip current studi particip n stratifi sex age group year studi selfreport alcohol consumpt random assign one two arm invit particip current trial particip blind alloc total n n intervent n control particip accept invit femal age rang year old whitewhit british data collect electron via two websit one treatment arm particip complet assess week assess includ cage day retrospect drink diari drink consum per drink occasionresult regress model predict monitor effect particip complet assess reduc alcohol consumpt final week reduct predict alloc receiv intervent addit reduct predict number visit intervent websit increasedconclus unitcheck can reduc amount alcohol consum reduct can sustain medium term ie week intervent withdrawn find suggest selfmonitor activ ingredi webbas person feedback

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