Psychometric properties of the Japanese version of the Clinical Outcomes in Routine Evaluation–Outcome Measure

This study examined the reliability and validity of the Japanese version of the Clinical Outcomes in Routine Evaluation–Outcome Measure (CORE-OM), a standardized, brief, but comprehensive outcome measurement. The target population consisted of 1684 Japanese company employees, hospital staff, and university students. A confirmatory factor analysis proved that our data fit the factor structure of the original CORE-OM. We also examined its internal consistency, test-retest reliability, convergent validity, and sensitivity in discriminating between clinical and nonclinical samples. After demonstrating these results, we discuss how the Japanese version of the CORE-OM can be used both in clinical and research settings. © 2011 Elsevier Inc. All rights reserved.