Drug and Alcohol Dependence
Volume 91, Issue 2 , Pages 220-227, 1 December 2007

A randomized clinical trial of methadone maintenance for prisoners: Results at 1-month post-release☆

  • Timothy W. Kinlock

      Affiliations

    • Social Research Center, Friends Research Institute, Baltimore, MD 21201, USA
    • Division of Criminology, Criminal Justice, and Social Policy, University of Baltimore, Baltimore, MD 21201, USA
    • Corresponding Author InformationCorresponding author at: Social Research Center, Friends Research Institute, Baltimore, MD 21201, USA. Tel.: +1 410 837 3977x224; fax: +1 410 752 4218.
    • ,
  • Michael S. Gordon

      Affiliations

    • Social Research Center, Friends Research Institute, Baltimore, MD 21201, USA
    • ,
  • Robert P. Schwartz

      Affiliations

    • Social Research Center, Friends Research Institute, Baltimore, MD 21201, USA
    • Open Society Institute-Baltimore, Baltimore, MD 21201, USA
    • ,
  • Kevin O’Grady

      Affiliations

    • Department of Psychology, University of Maryland, College Park, MD 20742, USA
    • ,
  • Terrence T. Fitzgerald

      Affiliations

    • Man Alive Inc., Baltimore, MD 21218, USA
    • ,
  • Monique Wilson

      Affiliations

    • Social Research Center, Friends Research Institute, Baltimore, MD 21201, USA

Received 28 March 2007; received in revised form 25 May 2007; accepted 30 May 2007.

Abstract 

Background

Despite its effectiveness, methadone maintenance is rarely provided in American correctional facilities. This study is the first randomized clinical trial in the US to examine the effectiveness of methadone maintenance treatment provided to prisoners with pre-incarceration heroin addiction.

Methods

A three-group randomized controlled trial was conducted between September 2003 and June 2005. Two hundred eleven Baltimore pre-release inmates who were heroin dependent during the year prior to incarceration were enrolled in this study. Participants were randomly assigned to the following: counseling only: counseling in prison, with passive referral to treatment upon release (n=70); counseling+transfer: counseling in prison with transfer to methadone maintenance treatment upon release (n=70); and counseling+methadone: methadone maintenance and counseling in prison, continued in a community-based methadone maintenance program upon release (n=71).

Results

Two hundred participants were located for follow-up interviews and included in the current analysis. The percentages of participants in each condition that entered community-based treatment were, respectively, counseling only 7.8%, counseling+transfer 50.0%, and counseling+methadone 68.6%, p<.05. All pairwise comparisons were statistically significant (all ps<.05). The percentage of participants in each condition that tested positive for opioids at 1-month post-release were, respectively, counseling only 62.9%, counseling+transfer 41.0%, and counseling+methadone 27.6%, p<.05, with the counseling only group significantly more likely to test positive than the counseling+methadone group.

Conclusions

Methadone maintenance initiated prior to or immediately after release from prison appears to have beneficial short-term impact on community treatment entry and heroin use. This intervention may be able to fill an urgent treatment need for prisoners with heroin addiction histories.

Keywords: Methadone maintenance, Drug abuse treatment, Prisoners, Heroin addiction

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☆ Funding for this study was provided by Grant R01 DA 16237 from the National Institute on Drug Abuse (NIDA) and awarded to the first author; the NIDA had no further role in study design; in the collection, analysis and interpretation of data; in the writing of the report; or in the decision to submit the paper for publication.

PII: S0376-8716(07)00232-3

doi:10.1016/j.drugalcdep.2007.05.022

Drug and Alcohol Dependence
Volume 91, Issue 2 , Pages 220-227, 1 December 2007

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