The largest subtype, containing approximately one-third of the cases (28 percent of the men in the study population and 39 percent of the women), was characterized by relatively low risk and severity and was labeled as such. A second group contained equal proportions of men and women (22 percent from each group) and included those cases with the most pervasive family histories of alcoholism and the lowest age for first alcohol use. This subtype, labeled “high risk-high severity,” was characterized by conduct problems, illicit drug use, and antisocial personality.
