Open Versus Closed Group Treatment of Men with a History of Sexual Offenses.

Treatment programs for people with histories of sexual violence form a critical part of criminal justice service rehabilitation. Completion of these programs is often a precondition of release. Meta-analytic reviews suggest moderate benefit is associated with treatment completion, although effect sizes vary. This study examined whether commencement of open versus closed group programs was associated with treatment completion and recidivism. Participants were 426 adult men who commenced treatment between April 1, 2014, and December 31, 2017. Participants were followed-up until June 30, 2018. Programs varied by type (open versus closed), location (in-custody versus in-community) and intensity (moderate versus high). No significant differences were observed between open and closed programs for treatment completion but men who were treated in-custody were more likely to complete treatment when compared to those men who commenced treatment in the community. No significant differences were observed between open and closed programs for sexual or for any recidivism.