Hypothesis 3 proposed that there would be few differences in predictors between High-Risk Drinkers and Problem Drinkers in Groups 2 and 3. However, the data in the last column of Table 2, directly comparing baseline characteristics across these groups, indicated that, compared to High-Risk Drinkers, members of the Problem Drinking Group had higher SRE scores (lower LRs per drink), higher baseline maximum drinking quantities and frequencies, reported more alcohol problems, and were more likely to have had prior AUD treatment. Problem Drinkers were also more likely to have ever used illicit drugs at baseline, had higher numbers of substance use disorder (SUD) problems, reported higher Sensation Seeking scores, and were less likely to be EA. This pattern of differences across Low-Risk and High-Risk Drinkers was supported by the regression analysis in Table 3 that demonstrated that Problem Drinkers had higher SRET and Sensation Seeking scores and were less likely to be EA.
