The original study assigned research subjects to day hospital or a traditional outpatient program. The day hospital provided four times the intensity of the outpatient program during the first 3 weeks, but services and program length were the same: 3 weeks followed by 5 weeks of similar intensity treatment to constitute the 8-week rehabilitation program. Aftercare (one outpatient session weekly for 10 months) began the 9th week. Treatment philosophy was based on total abstinence (for more information on the study site, programs, and methods of the original study, see Weisner et al., 2000).
