Class 1 (18.7% of the sample), “persistent heavy drinking”, reported a high probability of heavy drinking with average drinks per drinking day (DDD) of 10.59 (SD=6.27) and average percent drinking days (PDD) of 69% (SD=26.6%) during treatment. Class 2 (9.6% of the sample), “relapse-to-heavy drinking”, reported abstinence initially and a high probability of heavy drinking by the end of treatment with average DDD of 11.88 (SD=7.41) and average PDD of 25.2% (SD=18.9%). Class 3 (6.7% of the sample), “mixed heavy and low risk drinking”, reported a mix of heavy and low risk drinking with average DDD of 5.48 (SD=3.44) and average PDD of 49.2% (SD=24.0%) across the treatment period. Class 4 (7.9% of the sample), “heavy drinking-to-abstinence”, reported heavy drinking initially and a high probability of abstinence by the end of treatment with average DDD of 9.0 (SD=8.5) during the first six weeks of treatment and average DDD of 2.5 (SD=5.4) during the last week of treatment. Class 5 (6.8% of the sample), “consistent low drinking”, reported low risk drinking throughout treatment with average DDD of 2.85 (SD=1.60) and average
