Post-hoc analyses also revealed that the ALCs with a history of drug dependence did not differ from the ALCs without a history of drug dependence on any composite score when examined within the entire group or within Caine-related subcategories, with the exception that within Caine 0, ALCs with a history of drug dependence scored lower than ALCs without a history of drug dependence on Delayed Memory. Comparing ALCs with and without cocaine dependence, with and without amphetamine, with and without opioid, and with and without cannabis dependence yielded no group differences on any of the cognitive or motor composite scores. ALCs with a history of dependence on more than 1 drug (n=25) did not differ from ALCs with no history of any drug dependence on any of the composite scores.
