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Keywords:

  • Japanese students;
  • Maudsley Obsessional-Compulsive Inventory;
  • obsessive-compulsive disorder;
  • prevalence.

Abstract The prevalence of obsessive-compulsive disorder (OCD) was measured in 424 Japanese students using a Japanese version of the Maudsley Obsessional-Compulsive Inventory (MOCI-J). Six students (1.7%) of 350 interviewed students were diagnosed as OCD according to DSM-III-R. When the cut-off point of the MOCI-J was 12, the sensitivity was 100% and the specificity was 96%. Our results suggest that individuals with OCD are not rare among the young Japanese population and that the MOCI-J is a useful tool for screening OCD.