Buprenorphine versus methadone for opioid dependence: predictor variables for treatment outcome

Drug and Alcohol Dependence
G GerraS Bertacca

Abstract

The present study compared in a clinical non-experimental setting the efficacy of buprenorphine (BUP) and methadone (METH) in the treatment of opioid dependence: all the subjects included in the study showed severe long-lasting heroin addiction. Participants (154) were applicants to a 12 weeks treatment program, who were assigned to either METH (78) (mean doses 81.5 +/- 36.4 mg) or BUP (76) (mean doses 9.2 +/- 3.4 mg) treatment. Aim of the study was to evaluate patient/treatment variables possibly influencing retention rate, abstinence from illicit drugs and mood changes. METH patients showed a higher retention rate at week 4 (78.2 versus 65.8) (P < 0.05), but BUP and METH were equally effective in sustaining retention in treatment and compliance with medication at week 12 (61.5 versus 59.2). Retention rate was influenced by dose, psychosocial functioning and not by psychiatric comorbidity in METH patients. In contrast, BUP maintained patients who completed the observational period showed a significantly higher rate of depression than those who dropped out (P < 0.01) and the intention to treat sample (P < 0.05). No relationship between retention and dose, or retention and psychosocial functioning was evidenced for BUP patients....Continue Reading

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