As Table 2 indicates, the most common lifetime comorbid conditions were other substance use disorders (n=153; 81%), followed by substance-induced disorders (n=66, 35%). Fifty-seven percent reported past dependence on other drugs, and 56% had abused other drugs. The most common past drug dependence diagnoses (prevalence of dependence on nicotine was not measured) were for alcohol (n=62, 33%), cocaine (n=51, 27%), and cannabis (n=28, 15%), whereas the most common abuse diagnoses were for cannabis (n=46, 24%) and alcohol (n=32, 17%).
