Article

Specificity of belief domains in OCD: validation of the French version of the Obsessive Beliefs Questionnaire and a comparison across samples.

Centre de Recherche Fernand-Seguin, Université de Montréal, Montreal, Quebec, Canada.
Journal of Anxiety Disorders (Impact Factor: 2.96). 02/2008; 22(6):1029-41. DOI: 10.1016/j.janxdis.2007.11.003
Source: PubMed

ABSTRACT This paper assesses the psychometric properties of the French version of the Obsessive Beliefs Questionnaire (OBQ-44) and investigates whether the questionnaire discriminates between obsessive-compulsive disorder (OCD), anxious control (AC), and non-clinical control (NCC) participants. A confirmatory factor analysis suggested a poor fit of the model. An exploratory factor analysis replicated the original factor structure. The subscales were moderately intercorrelated and highly correlated with the total score. There was partial support for convergent/divergent validity of the OBQ-44. In analyses of variance comparing the three samples, the participants in the OCD sample scored significantly higher than the participants in the AC and NCC samples on all of the OBQ-44 scores. In analyses of covariance comparing the OCD and NCC samples while controlling for general distress and age, the participants with OCD scored significantly higher than the NCC participants on all of the OBQ-44 scores. Implications of the current study are discussed.

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    ABSTRACT: INTRODUCTION: The Obsessional Beliefs Questionnaire (OBQ-44) is a self-administered instrument comprised of 44 items, designed to assess the beliefs of patients with obsessive compulsive disorder (OCD). The objective of this study was to describe the process of translation and adaption of the questionnaire into Brazilian Portuguese. METHOD: For the translation and adaptation of the OBQ-44, we first obtained authorization from the authors of the original scale to use the instrument. Subsequently, the scale was independently translated from English into Brazilian Portuguese by two health professionals with proficiency in English. Following comparison of the two translations, a preliminary version was obtained and tried out on a sample of 20 patients with a primary diagnosis of OCD. This pretest aimed to assess the patients' understanding of the items and to make any necessary language adaptations. Then, the scale was independently back-translated by two psychiatrists, also with proficiency in English. Following comparison of the two back-translations, a final version in English was developed; this version was evaluated and approved by the authors of the original instrument. RESULTS: The Brazilian Portuguese version of the OBQ-44, after the process of translation and adaptation here described, showed to be of easy interpretation by patients with different educational levels. The instrument can therefore be used to assess patients from different Brazilian socioeconomic contexts. CONCLUSION: OBQ-44 is a self-administered instrument of easy application. Therefore, it can be useful in the identification of dysfunctional beliefs in OCD patients, contributing toward a better understanding of the role played by such beliefs in the onset and maintenance of the disorder.
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