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The Impact of Prison-Based Treatment on Sex Offender Recidivism

NCJ Number
253612
Journal
Sexual Abuse: A Journal of Research and Treatment Volume: 21 Issue: 3 Dated: 2009 Pages: 279-307
Author(s)
Grant Duwe; Robin A. Goldman
Date Published
2009
Length
29 pages
Annotation

Using a retrospective quasi-experimental design, this study evaluated the effectiveness of prison-based treatment by examining recidivism outcomes among 2,040 sex offenders released from Minnesota prisons between 1990 and 2003 (average follow-up period of 9.3 years). 

Abstract

To reduce observed selection bias, the authors used propensity score matching to create a comparison group of 1,020 untreated sex offenders who were not significantly different from the 1,020 treated offenders. In addition, intent-to-treat analyses and the Rosenbaum bounds method were used to test the sensitivity of the findings to treatment refuser and unobserved selection bias. Results from the Cox regression analyses revealed that participating in treatment significantly reduced the hazard ratio for rearrest by 27 percent for sexual recidivism, 18 percent for violent recidivism, and 12 percent for general recidivism. These findings are consistent with the growing body of research that supports the effectiveness of cognitivebehavioral treatment for sex offenders. 31 references (publisher abstract modified)

Date Published: January 1, 2009