MCMI differences between alcoholics and cocaine abusers: effect of age, sex, and race.

Samples of alcohol-dependent-only subjects (n = 164), cocaine-dependent-only subjects (n = 63), and subjects dependent on multiple substances, including alcohol and cocaine (n = 103), were administered the Millon Clinical Multiaxial Inventory (MCMI) as part of a routine clinical evaluation. The alcohol-only group was older (M = 38.7 years) and had a higher percentage of White subjects than other groups. The multiple-use (60%) group also had a higher percentage of White subjects than the cocaine only group (38%) and a higher percentage of male subjects (81%) than the alcohol-only group (67%). Although the MCMI characteristics of each diagnostic group paralleled previous findings, few MCMI differences were found after controlling for age, sex, and race effects. The implications of these results for treatment development are discussed.