Abstract
abstract The Vancouver Obsessional-Compulsive Inventory (VOCI) was validated in Iranian non-clinical individuals, but not in patients with obsessive-compulsive disorder (OCD). Accordingly, this study aims to further evaluate the six-factor first-order and one-factor second-order structures, validity, and reliability of the scale and also to adapt this scale to the DSM-5 recommendations regarding hoarding behavior in Iranian OCD patients. Three hundred and sixty patients completed the VOCI, the Dimensional Obsessive-Compulsive Scale (DOCS), the Yale-Brown Obsessive Compulsive Scale checklist (Y-BOCS), the Obsessive-Compulsive Inventory-Revised (OCI-R); the Penn State Worry Questionnaire (PSWQ-SF), the Beck Depression Inventory-II (BDI-II), and the Beck Anxiety Inventory (BAI). Results showed that the six-factor first-order model of the VOCI had acceptable fit, while the five-factor first-order model had more appropriate fit by deleting the hoarding subscale's items. Also, one-factor second-order structure of the scale has been found to have an adequate fit. In addition, reliability and convergent and discriminant validity of the VOCI have been found to be good. The findings indicate that although the VOCI with the six-factor first-order and one-factor second-order structures is a valid scale in Iranian OCD patients, the VOCI adapted to the DSM-5 is more reliable to be used in Iranian community.
Published Version
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