A randomized trial of long-term reinforcement of cocaine abstinence in methadone-maintained patients who inject drugs

Kenneth Silverman, Elias Robles-Sotelo, Timothy Mudric, George E. Bigelow, Maxine L. Stitzer

Research output: Contribution to journalArticle

66 Citations (Scopus)

Abstract

This study determined whether long-term abstinence reinforcement could maintain cocaine abstinence throughout a yearlong period. Patients who injected drugs and used cocaine during methadone treatment (n = 78) were randomly assigned to 1 of 2 abstinence-reinforcement groups or to a usual care control group. Participants in the 2 abstinence-reinforcement groups could earn take-home methadone doses for providing opiate- and cocaine-free urine samples; participants in 1 of those groups also could earn $5,800 in vouchers for providing cocaine-free urine samples over 52 weeks. Both abstinence- reinforcement interventions increased cocaine abstinence, but the addition of the voucher intervention resulted in the largest and most sustained abstinence. Therefore, voucher-based reinforcement of cocaine abstinence in methadone patients can be a highly effective maintenance intervention.

Original languageEnglish (US)
Pages (from-to)839-854
Number of pages16
JournalJournal of Consulting and Clinical Psychology
Volume72
Issue number5
DOIs
StatePublished - Oct 2004
Externally publishedYes

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Methadone
Cocaine
Pharmaceutical Preparations
Opiate Alkaloids
Urine
Maintenance
Control Groups

ASJC Scopus subject areas

  • Psychiatry and Mental health
  • Clinical Psychology

Cite this

A randomized trial of long-term reinforcement of cocaine abstinence in methadone-maintained patients who inject drugs. / Silverman, Kenneth; Robles-Sotelo, Elias; Mudric, Timothy; Bigelow, George E.; Stitzer, Maxine L.

In: Journal of Consulting and Clinical Psychology, Vol. 72, No. 5, 10.2004, p. 839-854.

Research output: Contribution to journalArticle

Silverman, Kenneth ; Robles-Sotelo, Elias ; Mudric, Timothy ; Bigelow, George E. ; Stitzer, Maxine L. / A randomized trial of long-term reinforcement of cocaine abstinence in methadone-maintained patients who inject drugs. In: Journal of Consulting and Clinical Psychology. 2004 ; Vol. 72, No. 5. pp. 839-854.
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