Diagnostic utility of the Obsessive–Compulsive Inventory-Revised in China

• The diagnostic accuracy of the Chinese OCI-R was evaluated.
• Three groups were included, namely college students, OCD, anxiety disorder patients.
• The OCI-R can efficiently distinguish OCD patients from the other two groups.
• The OCI-R had better diagnostic accuracy than the Padua Inventory in identifying OCD.
• Cutoff points were derived to aid with screening and diagnosis of OCD in China.

The aim of the current study was to evaluate the diagnostic efficiency of the OCI-R as a screening tool in Chinese population. This study incorporated three different groups, including a college student sample (CS, n=392), a clinical sample of patients with obsessive–compulsive disorder (OCD, n=128), and a clinical control group of patients with anxiety disorders (AD, n=76). The receiver operating characteristic (ROC) analyses indicated that OCI-R total score evidenced a significantly higher diagnostic efficiency than would be expected by chance for distinguishing OCD patients from nonclinical participants and from participants with anxiety disorders. In addition, the OCI-R appeared to have better diagnostic accuracy than the Padua Inventory for identifying OCD patients relative to nonclinical individuals (Z=3.44, p=.001). Optimal cutoff scores were derived to aid with screening and diagnosis of OCD in China. In conclusion, the present study demonstrated that the Chinese version of the OCI-R has excellent diagnostic utility.