• Acta Medica Port · Mar 2023

    The Obsessive-Compulsive Inventory-Revised (OCI-R): Translation and Validation of the European Portuguese Version.

    • Gonçalo Varela Cunha, Pedro Silva Moreira, Mafalda Machado Sousa, Teresa Castanho, Maria Picó-Pérez, Sónia Ferreira, and Pedro Morgado.
    • Life and Health Sciences Research Institute (ICVS). School of Medicine. University of Minho. Braga; ICVS/3B's, PT Government Associate Laboratory. Braga/Guimarães. Portugal.
    • Acta Medica Port. 2023 Mar 1; 36 (3): 174182174-182.

    IntroductionThe Obsessive-Compulsive Inventory-Revised has been developed to evaluate the severity of obsessive-compulsive symptoms in both clinical and non-clinical individuals. The aim of this study was to evaluate the psychometric properties of the Portuguese version.Material And MethodsThis questionnaire was applied to 90 people with obsessive-compulsive disorder and 246 without a known mental illness. In addition to this clinical evaluation instrument, participants completed other clinical assessment scales that helped characterize the two study groups.ResultsGiven the objective of this study, to evaluate the structure by six factors, a confirmatory factor analysis was performed [patient group: χ2(120, n = 90) = 205.779, p < 0.01; CFI = 0.916; GFI = 0.814; RMSEA = 0.0890.Control Groupχ2(120, n = 246) = 224.762, p < 0.01; CFI = 0.938; GFI = 0.904; RMSEA = 0.060]. To assess the internal consistency of the scale, Cronbach's alpha was determined (patient group: α = 0.913; control group: α = 0.888). Convergent validity was tested by determining the Spearman correlation between the scores obtained in the Obsessive-Compulsive Inventory-Revised and Y-BOCS in the patient group (r = 0.651; p < 0.01).ConclusionObsessive-Compulsive Inventory-Revised has proved to be a consistent, valid, and reliable instrument with good psychometric properties to determine the severity of obsessive-compulsive symptoms in the Portuguese population.

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