Community reinforcement approach plus vouchers for cocaine dependence in a community setting in Spain: six-month outcomes.

The aim of this study was to assess the efficacy of the community reinforcement approach (CRA) plus vouchers treatment in achieving cocaine abstinence and treatment retention among patients enrolled in an outpatient program for cocaine dependence in Spain. Forty-three patients were randomly assigned to one of two treatment conditions in a community setting: CRA plus vouchers or standard care. Of the patients who received the CRA plus vouchers program, 73% completed 24 weeks of treatment, as compared with 42% of the patients who received standard care who did. In the CRA plus vouchers group, 40% of the patients achieved 24 weeks of continuous cocaine abstinence, as compared with 21% of the patients in the standard care group who did. These results support the effectiveness and generalizability of the CRA plus vouchers treatment in a community setting outside of the United States. Further follow-up is required to confirm the long-term maintenance of the results.