Predictors of drinking patterns included (1) demographic variables (age, sex, race, marital status), (2) percentage of heavy drinkers in the social network, (3) drinks per day over the week prior to the baseline assessment in MATCH and UKATT and the week prior to the 4 days of abstinence in the COMBINE study, (4) baseline alcohol dependence severity, and (5) negative mood symptoms. Descriptives for each of the predictors by study and in the pooled sample are provided in Table 1.
