Psychometric Properties of Malay Obsessive Compulsive Inventory-Revised: A Cross-sectional Study

The Obsessive-Compulsive Inventory-Revised (OCI-R) is a valid and reliable instrument used to screen obsessive-compulsive disorder (OCD) symptoms. This scale has been translated into numerous languages, although not the Malay language. The aim of this study is to examine the reliability and validity of Malay-language OCI-R in a community population. The 18-item surveys were completed by 223 healthy people. The OCI-R English version was translated backward and forward to the Malay language. Prior to distributing the questionnaire to the participants, face validity was done. Exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) were run to determine the psychometric qualities of the Malay language OCI-R. A total of 223 respondents mean aged of 33 (6.9) years, and 62% of respondents were female participated in this study. Based on EFA, the Malay language OCI-R showed high internal consistency and good convergent validity with a five-factor domain: "Washing", "Ordering", "Obsessions", "Checking" and "Hoarding". CFA analysis indicated an adequate fit index of (ꭓ2(160) = 4.24, root mean square error of approximation = 0.09, goodness of fit index = 0.89, adjusted goodness of fit index = 0.82, normed fit index = 0.91 and comparative fit index = 0.93) which supported a five-factor domain structure. The Malay OCI-R had a strong internal consistency, making it a credible and valid tool for identifying OCD symptoms in the general public. To improve the generalisability of these results, a larger study should be carried out with a bigger sample size and involving psychiatric patients.