Document Classification

Section Type: RESULTS

Text: The experimental group had better treatment retention at day 8 (86 % versus 57 %, P = 0. 001, 95 % CI for numbers needed to treat (NNT) = 3-8) and day 35 (62 % versus 39 %, P = 0. 02, 95 % CI for NNT = 4-18) ; used heroin on fewer days during the withdrawal programme (2. 6 + / - 2. 5 versus 4. 5 + / - 2. 3, P < 0. 001, 95 % CI = 1-2. 5 days) and in the postwithdrawal period (9. 0 + / - 8. 2 versus 14. 6 + / - 10, P < 0. 01, 95 % CI = 1. 8-9. 4) ; and reported less withdrawal severity.