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Concurrent alcohol dependence among methadone-maintained cocaine abusers is associated with greater abstinence.

Author(s): Byrne SA, Petry NM

Affiliation(s): Calhoun Cardiology Center, University of Connecticut School of Medicine, 263 Farmington Avenue, Farmington, CT, USA.

Publication date & source: 2011-04, Exp Clin Psychopharmacol., 19(2):116-22.

Publication type: Randomized Controlled Trial; Research Support, N.I.H., Extramural

Concurrent alcohol dependence (AD) among polysubstance abusers has been associated with negative consequences, although it may not necessarily lead to poor treatment outcomes. One of the most efficacious treatments for cocaine abuse is contingency management (CM), but little research has explored the impact of AD on abstinence outcomes, particularly among patients in methadone maintenance. Using data from three trials of CM for cocaine use, we compared baseline characteristics and posttreatment and follow-up cocaine outcomes between methadone-maintained, cocaine-dependent patients (N = 193) with and without concurrent AD, randomized to standard care (SC) with or without CM. Patients with and without concurrent AD had similar baseline characteristics, with the exception that AD patients reported more alcohol use. AD patients achieved longer durations of cocaine abstinence and were more likely to submit a cocaine-negative sample at follow-up than non-AD patients. Patients randomized to CM achieved better outcomes than those randomized to SC, but there was no interaction between treatment condition and AD status. These findings suggest that cocaine-using methadone patients with AD achieve greater cocaine abstinence than their non-AD counterparts and should not necessarily be viewed as more difficult to treat.

Page last updated: 2011-12-09

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