Evaluation of Psychometric Properties of Persian Version of the Prenatal Obsessive-Compulsive Disorder Scale (Pre-OCS)

Abstract

In the present study, the psychometric properties of the Persian version of prenatal obsessive-compulsive disorder scale (pre-OCS) has been investigated for prognostication of the pregnant women and making use of a proper screening instrument. The target group included the pregnant women who had referred to the healthcare and treatment centers in Tabriz and the study was carried out on 170 pregnant women. The results obtained from this study can contribute to the identification and proper treatment of the pregnancy period’s OCD through the investigation of the psychometric properties of the Persian version of (pre- OCS) and the resultant obtainment of a proper instrument and this prevents from the spending of direct and indirect treatment costs by the healthcare system hence it can be useful for patients, families and society as well as the healthcare system’s officials. Methods: This study is an exploratory research of the psychometric type and it was launched following acquiring approval in the research committee of medical sciences department in Tabriz University and after receiving a permit from the ethics committee of that university. The study population of the study included pregnant women. Considering the fact that the number of the study participants should be between 5 to 10 of the number of the items (Munro Statistical Methods, 2006), 170 pregnant women were selected based on a multistage sampling method as the study sample volume. Three questionnaires, namely the social-individual demographic characteristics, Yale-Brown questionnaire and prenatal obsessive-compulsive disorder scale, were completed for all of the participating women. Results: The findings of the questionnaire showed that the validity of the criterion for the structures was from 0/683 to 0/778.The reliability of the instrument for the structures was from0/681 to 0/709 and for the whole was 0/821.The questionnaire was loaded with two factors (Obsessive thoughts and obsessive actions).These two factors explained 51.4% of the total variance of the prenatal obsessive compulsive disorder questionnaire. THE internal consistency of the instrument was 0/671 and fore structures was 0/681 to 0/821.