Exploratory Subgroup Analyses
At 12 months, the effect of AB-CASI on the number of binge drinking episodes within the last 28 days was modified by age and primary reason for ED visit. In those older than 25 years, binge drinking episodes were 30% lower (RD, 0.70; 95% CI, 0.54-0.89) vs those 25 years or younger, for whom the point estimate for binge drinking episodes was 40% higher (RD, 1.40; 95% CI, 0.85-2.31; 