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Limited research has evaluated African American substance users’ response to evidence-based treatments. This study examined the efficacy of contingency management (CM) in African American and White cocaine users. A secondary analysis evaluated effects of race, treatment condition, and baseline cocaine urine sample results on treatment outcomes of African American (n= 444) and White (n= 403) cocaine abusers participating in one of six randomized clinical trials comparing CM to standard care. African American and White patients who initiated treatment with a cocaine-negative urine sample remained in treatment for similar durations and submitted a comparable proportion of negative samples during treatment regardless of treatment type; CM was efficacious in both races in terms of engendering longer durations of abstinence in patients who began treatment abstinent. Whites …