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P-815 - Psychometric Properties and Factor Structure of the Portuguese Version of the Maudsley Obsessional-compulsive Inventory

Published online by Cambridge University Press:  15 April 2020

V. Nogueira ,
A. Macedo ,
A.T. Pereira ,
M. Marques ,
M.J. Soares ,
J. Valente  and
M.H. Azevedo
V. Nogueira
Affiliation:
Institute of Medical Psychology, Medicine Faculty of the University of Coimbra, Coimbra, Portugal
A. Macedo
Affiliation:
Institute of Medical Psychology, Medicine Faculty of the University of Coimbra, Coimbra, Portugal
A.T. Pereira
Affiliation:
Institute of Medical Psychology, Medicine Faculty of the University of Coimbra, Coimbra, Portugal
M. Marques
Affiliation:
Institute of Medical Psychology, Medicine Faculty of the University of Coimbra, Coimbra, Portugal
M.J. Soares
Affiliation:
Institute of Medical Psychology, Medicine Faculty of the University of Coimbra, Coimbra, Portugal
J. Valente
Affiliation:
Institute of Medical Psychology, Medicine Faculty of the University of Coimbra, Coimbra, Portugal
M.H. Azevedo
Affiliation:
Institute of Medical Psychology, Medicine Faculty of the University of Coimbra, Coimbra, Portugal

Abstract

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Introduction

The Maudsley Obsessional-Compulsive Inventory (MOCI; Hodgson & Rachman, 1977) continues to be a widely used self-report measure of obsessive-compulsive symptoms. It has been translated into at least seven languages and the respective validations have resulted in good psychometric characteristics. It has not been validated to the Portuguese population yet.

Objectives

To investigate the psychometric properties and factorial structure of the MOCI Portuguese version.

Methods

The process of translation/re-translation followed the required steps. The MOCI was administered to a community sample of 217 first year university students (178 girls; 82.0%). The mean age was 18.50 (± 2.345: range: 17–35). To study the temporal stability 166 (135 girls; 81.3%) respondents answered the questionnaires again after approximately six weeks.

Results

The MOCI Cronbach's a was good (.79). The test-retest coefficient for the total score was high (.79; p < .001). An inspection of the Cattel's Scree plot and also of the item's content led us to select a three factors structure, which explained variance was of 29.17%: Factor (F) 1 “Doubting and Rumination” (VE = 15.43%; a = .72); F2 “Checking” (VE = 7.65%; a = .66) and F3 “Cleaning” (VE = 6.08%; a = .63). Temporal stability of F1, F2 and F3 were high: .67, .65 and .73 (all p < .001), respectively. Pearson correlations between factors were moderate and significant (≥.30).

Conclusions

The MOCI Portuguese version has good psychometric properties and its factorial structure is in accordance with those reported by other groups. It could be very useful to clinical and epidemiological purposes, as well as to transcultural studies.

Type
Abstract
Information
European Psychiatry , Volume 27 , Issue S1: Abstracts of the 20th European Congress of Psychiatry , 2012 , pp. 1
Copyright
Copyright © European Psychiatric Association 2012
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