Day treatment for cocaine dependence: incremental utility over outpatient counseling and voucher incentives.

Urban, poor, crack cocaine-dependent clients were randomly assigned to outpatient addiction counseling (n=39) or day treatment (n=40). Participants in both conditions received equivalent individual cognitive-behavioral counseling and earned equivalent payment vouchers for providing cocaine-negative urine samples. However, day treatment participants attended significantly more psychoeducational and recreational groups and received two meals per day.