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Woody GE, Bruce D, Korthuis PT, Chhatre S, Poole S, Hillhouse M, Jacobs P, Sorensen J, Saxon AJ, Metzger D, Ling W. HIV risk reduction with buprenorphine-naloxone or methadone: findings from a randomized trial. Journal of acquired immune deficiency syndromes (1999). 2014 Jul 1; 66(3):288-93.
OBJECTIVES: Compare HIV injecting and sex risk in patients being treated with methadone (MET) or buprenorphine-naloxone (BUP). METHODS: Secondary analysis from a study of liver enzyme changes in patients randomized to MET or BUP who completed 24 weeks of treatment and had 4 or more blood draws. The initial 1:1 randomization was changed to 2:1 (BUP:MET) after 18 months due to higher dropout in BUP. The Risk Behavior Survey measured HIV risk before 30 days at baseline and weeks 12 and 24. RESULTS: Among 529 patients randomized to MET, 391 (74%) were completers; among 740 randomized to BUP, 340 (46%) were completers; 700 completed the Risk Behavior Survey. There were significant reductions in injecting risk (P < 0.0008) with no differences between groups in mean number of times reported injecting heroin, speedball, other opiates, and number of injections; or percent who shared needles; did not clean shared needles with bleach; shared cookers; or engaged in front/back loading of syringes. The percent having multiple sex partners decreased equally in both groups (P < 0.03). For males on BUP, the sex risk composite increased; for males on MET, the sex risk decreased resulting in significant group differences over time (P < 0.03). For females, there was a significant reduction in sex risk (P < 0.02) with no group differences. CONCLUSIONS: Among MET and BUP patients who remained in treatment, HIV injecting risk was equally and markedly reduced; however, MET retained more patients. Sex risk was equally and significantly reduced among females in both treatment conditions, but it increased for males on BUP and decreased for males on MET.