Yale‐Brown Obsessive Compulsive Scale and US National Institute of Mental Health Global Obsessive Compulsive Scale in Turkish: reliability and validity

Abstract
Fifteen patients with DSM‐III‐R diagnosis of obsessive‐compulsive disorder (OCD) were rated according to the Turkish version of the Yale Brown Obsessive Compulsive Scale (Y‐BOCS) and the US National Institute of Mental Health Global Obsessive Compulsive Scale (NIMH‐GOCS) by 7 raters independently from audiotaped interviews. Patients also completed the Maudsley Obsessive Compulsive Inventory (MOCI). Interrater reliability of Y‐BOCS and NIMH‐GOCS were very good as well as correlations between these two scales. The correlations of MOCI with Y‐BOCS and NIMH‐GOCS were not significant. We found Y‐BOCS and NIMH‐GOCS to be reliable and valid instruments in assessing the severity of OCD. These findings suggest that MOCI may not be a suitable instrument for assessing the severity of OCD.

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