A Day-by-day Investigation of Changes in Criminal Convictions Before and After Entering and Leaving Opioid Maintenance Treatment: a National Cohort Study

Overview

Journal BMC Psychiatry

Publisher Biomed Central

Specialty Psychiatry

Date 2013 Oct 18

PMID 24131480

Citations 9

Authors

Anne Bukten

Jo Roislien

Svetlana Skurtveit

Helge Waal

Michael Gossop

Thomas Clausen

Affiliations

Soon will be listed here.

Abstract

Background: Opioid maintenance treatment (OMT) is associated with reduced crime among heroin users, but little is known about how crime changes during different phases of treatment. The aim of this study was to investigate changes in criminal convictions on a day-to-day basis before and after entry or discharge from OMT.

Methods: National cohort study of all patients (n = 3221) in OMT in Norway 1997-2003. Patients were followed over a 9-year period, before, during, and after treatment. Criminal convictions were studied on a day-to-day basis in relation to treatment status. A time-continuous estimate of the probability of convictions within the population for all days during observation was calculated.

Results: Changes in convictions were evident before changes of treatment status. During the 3 years prior to OMT, the convictions rate was approximately 0.4% per day. Prior to OMT, convictions decreased to about 0.2% per day on the day of treatment initiation. During the weeks before dropping out of treatment, convictions increased. The patterns during periods of transition were the same across gender, age and pre-treatment conviction-levels.

Conclusions: Changes in convictions often occurred prior to changes in treatment status. Reductions in criminal convictions were found in the period before entry (or re-entry) to OMT, and increases in criminal activity were found in the months prior to treatment interruption.

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