Anxiety Mood.  2023 Apr;19(1):10-18. 10.24986/anxmod.2023.19.1.002.

Psychometric Properties of the Korean Version of 12-Item Obsessive-Compulsive Inventory in Accordance With Obsessive-Compulsive Symptom Dimensions in Individuals With Obsessive-Compulsive Disorder

• Seo HS
• Choi M
• Lee SJ

• KMID: 2542126
• DOI: http://doi.org/10.24986/anxmod.2023.19.1.002

Abstract

Objective
: The 18-item Obsessive-Compulsive Inventory-Revised (OCI-R) is widely employed to assess symptoms of obsessive-compulsive disorder (OCD). However, this instrument’s factor structure does not align with contemporary dimensional models of OCD. Therefore, the objective of this study was to examine psychometric properties of the 12-item Korean OCI (OCI-12) on four obsessive-compulsive symptom dimensions, in patients with OCD.
Methods
: A total of 157 patients with OCD and 51 healthy controls completed psychological measures, including the OCI-R, Dimensional Obsessive-Compulsive Scale (DOCS), and scales evaluating anxiety and depressive symptoms. Pychometric characteristics of the OCI-12 with three neutralizing and three hoarding items eliminated from the OCI-R, were analyzed.
Results
: All OCI-12 items registered excellent internal consistency at 0.83. Confirmatory factor analysis revealed strong association between individual items and their proposed latent factors (i.e., subscales). Convergent validity was appropriate. A high correlation was particularly observed for the DOCS score (r=0.71, p<0 .001). Moreover, the OCI-12 was as sensitive as the OCI-R for determining effects of empirically supported treatment for OCD.
Conclusion
: The OCI-12 is a 12-item measure that adheres to the prevailing 4-factor model of OCD dimensions. Like OCI-R, it possesses good to excellent psychometric properties, including reliability, validity, and sensitivity to treatment.

Keyword

Obsessive-compulsive disorder; Assessment; Questionnaire; Dimension