Minnesota Department of Corrections, St. Paul, MN 55108, USA.
Sex Abuse. 2013 Apr;25(2):143-65. doi: 10.1177/1079063212453942. Epub 2012 Aug 1.
In 2008, the Minnesota Department of Corrections implemented Minnesota Circles of Support and Accountability (MnCOSA), a sex offender reentry program based on the Circles of Support and Accountability (COSA) model developed in Canada during the 1990s. Using a randomized experimental design, this study evaluates the effectiveness of MnCOSA by conducting a cost-benefit analysis and comparing recidivism outcomes in the MnCOSA (N = 31) and control groups (N = 31). Despite the small total sample size (N = 62), the results from Cox regression models suggest that MnCOSA significantly reduced three of the five recidivism measures examined. By the end of 2011, none of the MnCOSA offenders had been rearrested for a new sex offense compared with one offender in the control group. Because of less recidivism observed among MnCOSA participants, the results from the cost-benefit analysis show the program has produced an estimated US$363,211 in costs avoided to the state, resulting in a benefit of US$11,716 per participant. For every dollar spent on MnCOSA, the program has generated an estimated benefit of US$1.82 (an 82% return on investment).
2008 年，明尼苏达州惩教署实施了明尼苏达州支持和问责制圈（MnCOSA），这是一个基于 20 世纪 90 年代在加拿大开发的支持和问责制圈（COSA）模式的性犯罪者再融入计划。本研究采用随机实验设计，通过进行成本效益分析，并比较 MnCOSA（N=31）和对照组（N=31）的累犯结果，评估 MnCOSA 的有效性。尽管总样本量较小（N=62），但 Cox 回归模型的结果表明，MnCOSA 显著降低了五个累犯指标中的三个。到 2011 年底，MnCOSA 罪犯中没有一人因新的性犯罪被捕，而对照组中有一名罪犯。由于 MnCOSA 参与者的累犯率较低，成本效益分析的结果表明，该计划为该州避免了约 363211 美元的成本，每个参与者的收益为 11716 美元。每花费 1 美元在 MnCOSA 上，该计划估计产生 1.82 美元的收益（投资回报率为 82%）。
