Development of the Correctional Stimulant Relapse Risk Scale (C-SRRS) for drug abusers in Japanese prison: The examination of reliability and validity

Abstract

The purpose of this study is to develop the Correctional Stimulant Relapse Risk Scale (C-SRRS) in Japanese prison for measuring relapse risk of drug abuse, meanwhile to examine reliability and validity of the scale. In Study I, the data were collected from 712 male prisoners imprisoned in Japan due to drug related offenses between March and June, 2008. Exploratory factor analysis revealed six factors of the C-SRRS (impulsive and urgent for drug use (F1), emotional and motivational problems (F2), positive expectancy for drug use (F3), lack of control over drug and clime (F4), lack of recognition as drug abuser (F5) and “lack of negative expectancy for drug use (F6)”). Reliability analysis indicated that Chronbach's α of C-SRRS were sufficiently high (α were 0.931 (F1), 0.850 (F2), 0.806 (F3), 0.805 (F4), 0.559 (F5), 0.683 (F6)). In StudyII, the data were collected from 297 male prisoners imprisoned in Japan due to drug related offenses between January and February, 2009. Validity of C-SRRS was confirmed by using questionnaire based on the Japanese version of the Structured Clinical Interview for DSM-IV to assess drug dependency, and relating relapse risk for drug abuse as external criteria.