Subjects were randomly assigned to one of three individually-delivered, psychosocial interventions: Cognitive Behavioral Therapy (CBT; Kadden et al., 1992), Motivational Enhancement Therapy (MET; Miller et al., 1992), and Twelve-Step Facilitation Therapy (TSF; Nowinski et al., 1995). TSF and CBT were delivered in 12 weekly sessions; MET sessions were delivered only at weeks 1, 2, 6 and 12. Participants were reassessed at 3, 6, 9, 12 and 15 months following treatment, and follow-up rates remained over 90%. More complete details can be found in Project MATCH Research Group (1997).
