Document Classification

Section Type: RESULTS

Text: The buprenorphine group reduced the number of days of illicit opioid use per week from 5. 4 days (95 % CI, 5. 1-5. 7) to 0. 9 days (95 % CI, 0. 5-1. 3) vs a reduction from 5. 4 days (95 % CI, 5. 1-5. 7) to 2. 3 days (95 % CI, 1. 7-3. 0) in the referral group and from 5. 6 days (95 % CI, 5. 3-5. 9) to 2. 4 days (95 % CI, 1. 8-3. 0) in the brief intervention group (P <. 001 for both time and intervention effects ; P =. 02 for the interaction effect).