In the analyses with Class 6 “abstinence-to-low risk drinking” as the reference class (see Figure 2), greater baseline drinking was associated with a significantly higher likelihood of expected membership in Classes 1–4 and Class 7, as compared to Class 6. Being non-Hispanic White predicted greater likelihood of membership in Class 2 “relapse-to-heavy drinking,” as compared to Class 6. Older age predicted a significantly greater probability of expected membership in Class 3 “mixed heavy and low risk drinking” (OR=1.04, 95% CI: 1.01, 1.06), Class 4 “heavy drinking-to-abstinence” (OR=1.03, 95% CI: 1.01, 1.06), Class 5 “consistent low risk drinking” (OR=1.10, 95% CI: 1.05, 1.14), and Class 7 “abstainers” (OR=1.06, 95% CI: 1.03, 1.09), as compared to Class 6. Greater alcohol dependence severity was associated with a higher probability of membership in Class 2 “relapse-to-heavy drinking” and Class 4 “heavy drinking-to-abstinence,” as compared to Class 6.
