Follow-up Period
Follow-up assessments and relapse-prevention counseling occurred during clinic visits 10, 12, 26, and 52 weeks after the start of the study. In addition to clinic visits, subjects received eight telephone calls from a counselor during this period, one per month in months 3, 4, and 5 and 7 to 11. All follow-up counseling was less than 10 minutes in duration per call.