Individuals in the outpatient arm were most likely to transition from nondrinking to heavy or moderate drinking initially and were likely to transition back to nondrinking by the 12-month follow-up (based on both transition probabilities and class membership across time). In the aftercare arm, participants were most likely to transition from moderate or nondrinking to heavy drinking initially but also were likely to transition back to nondrinking by the 12-month follow-up.
