Retention and attendance with supervised buprenorphine treatment: a case-note review.

Since 2001, the Langton Centre has used supervised administration of buprenorphine in treating heroin dependence, without distinguishing between detoxification and maintenance; most people commencing treatment may remain on buprenorphine indefinitely. The aim of this study was to describe retention in treatment, reasons for leaving, re-entry and pattern of attendance, and compare retention in practice with results from research trials, using a file review of sequential presentations for buprenorphine treatment. Retention in treatment was 37% at 6 months, the same as in Australian research trials of buprenorphine maintenance (37%); most people dropped-out without consultation or dose tapering. Repeated episodes of treatment constituted 45% of all episodes; missed scheduled doses were common. Participation in buprenorphine treatment often involves repeated, short episodes and erratic attendance. Measures to improve retention in treatment could improve treatment efficacy.