question: Compared to Minimal intervention (MI) what was the result of Intensive group intervention (IGI) on Continued abstinence at 1 year?
context: No differences were observed between the IGI and the III for continued abstinence confirmed by CO [RR 0.7 (0.2-2.2)] or for any of the other secondary outcome measures: self-reported continued abstinence [RR 0.8 (0.3-2.2)]; point abstinence confirmed by CO [RR 0.5 (0.2-1.1)], and self-reported point abstinence [RR 0.8 (0.4-1.8)].