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Randomized Controlled Trial
. 2010 Dec;78(6):898-911.
doi: 10.1037/a0020766.

Efficacy of web-based personalized normative feedback: a two-year randomized controlled trial

Clayton Neighbors  1 , Melissa A Lewis, David C Atkins, Megan M Jensen, Theresa Walter, Nicole Fossos, Christine M Lee, Mary E Larimer
Affiliations
Randomized Controlled Trial

Efficacy of web-based personalized normative feedback: a two-year randomized controlled trial

Clayton Neighbors et al. J Consult Clin Psychol. 2010 Dec.

Abstract

Objective: Web-based brief alcohol interventions have the potential to reach a large number of individuals at low cost; however, few controlled evaluations have been conducted to date. The present study was designed to evaluate the efficacy of gender-specific versus gender-nonspecific personalized normative feedback (PNF) with single versus biannual administration in a 2-year randomized controlled trial targeting a large sample of heavy-drinking college students.

Method: Participants included 818 freshmen (57.6% women; 42% non-Caucasian) who reported 1 or more heavy-drinking episodes in the previous month at baseline. Participants were randomly assigned in a 2 (gender-specific vs. gender-nonspecific PNF) × 2 (single vs. biannual administration of PNF) + 1 (attention control) design. Assessments occurred every 6 months for a 2-year period.

Results: Results from hierarchical generalized linear models provided modest effects on weekly drinking and alcohol-related problems but not on heavy episodic drinking. Relative to control, gender-specific biannual PNF was associated with reductions over time in weekly drinking (d = -0.16, 95% CI [-0.02, -0.31]), and this effect was partially mediated by changes in perceived norms. For women, but not men, gender-specific biannual PNF was associated with reductions over time in alcohol-related problems relative to control (d = -0.29, 95% CI [-0.15, -0.58]). Few other effects were evident.

Conclusions: The present research provides modest support for the use of biannually administered web-based gender-specific PNF as an alternative to more costly indicated prevention strategies.

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Figures

Figure 1
Figure 1
Participant flow chart. GSF = gender-specific feedback; bac = blood alcohol content; GNSF = gender-nonspecific feedback; mo = months.
Figure 2
Figure 2
Unadjusted means and standard deviations by condition for perceived norms and drinking outcomes. GNS = gender-nonspecific; GS = gender-specific; RAPI = Rutgers Alcohol Problem Index (used to assess alcohol-related problems); mos = months; DDQ = Daily Drinking Questionnaire (used to assess drinks per week); NSNORM = gender-nonspecific perceived norms; SSNORM = gender-specific perceived norms; HED = heavy episodic drinking.
Figure 3
Figure 3
Effect sizes (ds) and 95% confidence intervals for Treatment versus Control × Time interactions for drinks per week, alcohol-related problems, and heavy episodic drinking. GNS = gender-nonspecific; GS = gender-specific.
Figure 4
Figure 4
Effect sizes (ds) and 95% confidence intervals for Treatment versus Control × Time interactions for gender-specific (GS) perceived norms and gender-nonspecific (GNS) perceived norms.
See this image and copyright information in PMC

References

    1. Abrams DB, Clayton RR. Transdisciplinary research to improve brief interventions for addictive behaviors. In: Monti PM, Colby SM, O'Leary TA, editors. Adolescents, alcohol, and substance abuse: Reaching teens through brief interventions. Guilford Press; New York, NY: 2001. pp. 321–341.
    1. Atkins DC, Gallop RJ. Rethinking how family researchers model infrequent outcomes: A tutorial on count regression and zero-inflated models. Journal of Family Psychology. 2007;21:726–735. - PubMed
    1. Baer JS, Marlatt GA, Kivlahan DR, Fromme K, Larimer ME, Williams E. An experimental test of three methods of alcohol risk reduction with young adults. Journal of Consulting and Clinical Psychology. 1992;60:974–979. - PubMed
    1. Baer JS, Stacy A, Larimer M. Biases in the perception of drinking norms among college students. Journal of Studies on Alcohol. 1991;52:580–586. - PubMed
    1. Bates D, Maechler M, Dai B. Lme4: Linear mixed-effects models using S4 classes [Computer software] 2008 Retrieved from http://lme4.r-forge.r-project.org.

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