An exploration of classification of female convicted inmates based on the risk factors for recidivism

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  • 再犯リスク要因に基づいた女子受刑者の類型化の試み
  • サイハン リスク ヨウイン ニ モトズイタ ジョシ ジュケイシャ ノ ルイケイカ ノ ココロミ

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Abstract

<p>The aim of this study was to identify risk factors for recidivism of female offenders in Japan, and to classify them by those factors. The subjects were comprised 1,154 female convicted inmates who were released from penal institutions across Japan. Investigated were recidivism within two years with the possible variables that were thought to predict the re-offending, by referring to existing research. As a result of survival analysis (Kaplan–Meier estimation method), there were significant differences between groups in many variables of index crime, criminal history, family history, academic achievement/work, and psychiatric problems. Three clusters were extracted by K-means method for these variables. Each cluster had significant difference in the recidivism rate, criminal tendency, familial and working situations, and psychiatric problems. We discuss an appropriate treatment methodology based on the characteristics of each cluster.</p>

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