Reliability and validity study of the Obsessive-Compulsive Inventory-Child Version (OCI-CV)

Objective: The lack of self-rating multidimensional questionnaires to assess obsessive-compulsive disorder (OCD) in children and adolescents poses a problem for monitoring clinical practices and implementing academic research. This study aimed to empirically examine the psychometric properties of the OCI-CV in a Turkish clinical sample of children and adolescents diagnosed with OCD alongside a control group for comparative analysis. Method: The OCI-CV was administered alongside other measures to a clinical sample of 232 participants aged 8-18 years (mean +/- SD=13.35 +/- 2.68; female/male: 46.1%/53.9%) and a control group. Results: According to the results of the item analysis, corrected item-total correlation coefficients were found to be between 0.36 and 0.62. Confirmatory factor analysis confirmed the original six-factor model with acceptable fit indices (Minimum Discrepancy per Degree of Freedom (CMIN/df)=1.734, Root Mean Square Error of Approximation (RMSEA)=0.056, Comparative Fit Index (CFI)=0.919, Standardized Root Mean Square Residual (SRMR)=0.067, Incremental Fit Index (IFI)=0.921, Normed Fit Index (NFI)=0.835, Root Mean Residual (RMR)=0.034). The standardized factor loadings of the scale items varied between 0.39 and 0.90. According to the Pearson correlation results, a significant positive correlation (p<0.001) was found within the scope of the concurrent validity of the OCI-CV. The Cronbach alpha coefficient of the six-dimensional 21-item scale was found to be 0.88, and that of the sub-dimensions of the scale ranged between 0.63 and 0.81. Conclusion: The present study demonstrated the psychometric properties of the Child Version of the Obsessive-Compulsive Inventory (OCI-CV), and the results showed that the measure is valid and reliable for use in a clinical sample of Turkish children and adolescents.