This study contributes to the substance abuse treatment literature by examining recidivism across treatment groups, the level of aggregation between the individual and the program. The sample consisted of 618 drug-involved offenders who participated in 12 different treatment groups within a single prison. Reincarceration significantly varied across groups, controlling for time at risk and treatment modality. This between-unit variation was explained by individual level treatment response measures and control variables. Results demonstrated that treatment effectiveness is impacted by the group in which the individual participates. These findings have substantial implications for correctional treatment theory, research, and policy.

中文翻译：

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治疗组和累犯：基于监狱的药物滥用治疗的多层次分析

本研究通过检查跨治疗组的累犯、个人与计划之间的聚合水平，为药物滥用治疗文献做出了贡献。样本包括 618 名涉毒罪犯，他们在一个监狱内参加了 12 个不同的治疗组。在控制风险时间和治疗方式的情况下，再监禁在各组之间存在显着差异。这种单位之间的差异可以通过个体水平的治疗反应措施和控制变量来解释。结果表明，治疗效果受个体参与的群体的影响。这些发现对矫正治疗理论、研究和政策具有重大意义。