The results of the present study indicate that a treatment designed to change the social network can yield favorable outcomes in the long-term. Patients in the Network Support condition reported an average of 80% abstinent days two years after treatment had ended (versus just over 60% for the other two conditions), and 40% were reporting complete abstinence in the 90 days preceding their two-year follow-up (versus under 30% for the other two conditions).
