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. Author manuscript; available in PMC: 2016 Nov 1.
Published in final edited form as: Addict Behav. 2015 Jun 7;50:13–21. doi: 10.1016/j.addbeh.2015.06.001

Table 1. Summary Description of Studies Included in the Meta-analysis.
Intervention Details
Authors Year Region Tx n Ct n M % White % Administration mode and format Groups analyzed Ct type Intervention components Additional groups included in study but excluded from meta-analysisa
Glassman et al. 2010 S 159 188 34 73 Electronic card Combo (Risk Reduction + Social Norms) DT Alcohol education, alcohol consumption alternatives, social norms message, moderation strategies. Study also included risk reduction and social norms groups
Glassman 2010 S 258 280 34 67 Electronic card Combo (Risk Reduction + Social Norms) NT Alcohol education, alcohol consumption alternatives, social norms message, moderation strategies. Study also included social norms and risk reduction groups
LaBrie et al. 2009 W 33 41 31 nd Campus-mail card Birthday Card NT Moderation strategies, alcohol consumption alternatives, social normative information.
Lewis et al. 2008 MW 90 97 35 94 Mailed card Personalized normative feedback card NT Normative reference message and feedback, BAC info.
Hembroff et al. 2007 MW 479 227 46 nd Mailed card B.R.A.D. only NT Story of a student who died during his 21st birthday celebration, info about signs and symptoms of alcohol poisoning. Study also included groups that received additional gender specific or gender neutral alcohol poisoning information
Neighbors et al. 2005 MW 78 86 38 96 Mailed card Birthday Card NT Advice to drink in moderation.
Neighbors et al. 2009 W 144 139 58 61 Web-based card and feedback Web-based personalized feedback NT Normative feedback, BAC info, moderation strategies, info about negative alcohol consequences.
Smith et al. 2006 S 76 94 47 68 Mailed card Combo 1 (B.R.A.D. + Info + Social Norms) AT Story of a student who died during his 21st birthday celebration, moderation and risk-reduction strategies, normative reference info. Study also included B.R.A.D. card, information, and social norms groups
100 107 41 74 Combo 2 (B.R.A.D. + Info + Social Norms) AT Study also included B.R.A.D. card, information, and social norms groups
Neighbors et al. 2012 W 96 95 46 68 Web-based feedback 21 Web-BASICS NT Normative reference info and feedback, BAC info, alcohol education. Study also included other groups with face-to-face delivery format

Notes. Tx= treatment group; Ct= comparison group; n= sample size; M= male; S= South; W= West; MW = Midwest; nd= not determined; NT = no treatment comparison; DT = diluted treatment comparison; AT = attention treatment comparison;

a

The most “comprehensive” intervention groups were selected for the main analysis for the alcohol quantity outcome to ensure the meta-analysis does not violate the assumption of statistically independent effect sizes. Sensitivity analyses were conducted with the excluded groups listed below to verify the robustness of the findings.