In this report, we identified a small, high risk group of college students who endorsed significantly more AUD criteria and reported more severe alcohol-related problems than the other classes, though members of this class did not drink significantly more than the moderately severe class. Every member of this high risk class met criteria for alcohol dependence. In a recent paper by Moss et al. (2007), similar classes of young adults were identified in the NESARC. A class similar to our class 2 was identified with early onset alcohol dependence but very little psychiatric comorbidity, low rates of antisocial personality disorder, and little family history of alcohol problems. Another class of young antisocial drinkers was identified who tended toward high rates of comorbidity, elevated rates of familial alcohol dependence, an early onset of drinking and early onset of alcohol dependence. This latter class resembles class 3 in our study. A suggestion of elevated familial alcohol problems was observed in our class 3, but results did not reach statistical significance.
