“…Results of a meta-analysis conducted by Olver, Stockdale, and Wormith (2011), which includes more than 120 studies and 41,000 offenders, confirms this finding across multiple intervention types to show that treatment attrition is associated with increased odds of recidivism. Specifically, studies have found that program attrition is related to increased reoffending for adult sex offenders (Beyko & Wong, 2005;Marques, Day, Nelson, & West, 1994;Wormith & Olver, 2002), domestic violence offenders (Daly & Pelowski, 2000), violent offenders (Polaschek, 2011), and drug abusers (Hiller, Knight, & Simpson, 1999a, 1999bLang & Belenko, 2000;Mateyoke-Scrivner, Webster, Staton, & Leukfeld, 2004) and for offenders in general treatment programs (Bouffard & Muftic, 2006;Hatcher, McGuire, Bilby, Palmer, & Hollin, 2012). The literature analyzing juvenile offenders confirms those findings to show that delinquents who fail to complete sex offender (Edwards et al, 2005;Hunter & Figueredo, 1999;Worling & Curwen, 2000) and substance abuse treatment (Hser et al, 2001;Williams & Chang, 2000) are also more likely to reoffend.…”