Baseret på retention i behandling og procentdelen af urinprøver, som blev taget 3 gange om ugen, og som var negative for non- undersøgelsesopioider, var buprenorphin mere effektiv end den lave kontroldosis til at holde heroinafhængige i behandling og til at reducere deres brug af opioid under behandlingen.
Based on retention in treatment and the percentage of thrice- weekly urine samples negative for non-study opioids, buprenorphine was more effective than the low dose of the control, in keeping heroin addicts in treatment and in reducing their use of opioids while in treatment.