For the current study, analyses were collapsed across arms of Project MATCH, and only participants with no missing data were retained for analyses, resulting in a total N of 1535 (1160 men). The majority of the sample were White (N = 1269), with fewer participants being Black (138), Hispanic (104) or other ethnicities. The average age in the sample at baseline was 40.24 (S.D. = 10.99). Subjects were randomly assigned to one of three treatment conditions: Twelve Step Facilitation therapy (TSF; Nowinski, Baker & Carrol, 1992), Cognitive Behavioral Therapy (CBT; Kadden et al., 1992), or Motivational Enhancement Therapy (MET; Miller et al., 1992).
