From: Clinic-Based Treatment of Opioid-Dependent HIV-Infected Patients Versus Referral to an Opioid Treatment ProgramA Randomized Trial Ann Intern Med. 2010;152(11):704-711. doi:10.7326/0003-4819-152-11-201006010-00003 Figure Legend: Probability of positive results for opioid and cocaine use on urine drug tests at study visits.Observed estimates are shown for clinic-based buprenorphinenaloxone (BUP) (circles) and referred treatment (triangles); vertical lines represent 95% CIs. Mixed-effects model-based estimates for positive urine drug test results are shown for clinic-based BUP (squares) and referred treatment (diamonds); shading represents 95% confidence bands. The average model-based estimates for opioid-positive results and cocaine-positive results were significantly lower for clinic-based BUP than for referred treatment (P= 0.015 and 0.012, respectively). Date of download: 1/24/2018 Copyright © American College of Physicians. All rights reserved.