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Exploratory analysis of the French version of the beliefs about medicines questionnaire in patients with severe mental disorders: Factorial structure and reliability in specific populations of schizophrenic, bipolar and depressive patients

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  • Ludovic Samalin
  • Ingrid de Chazeron
  • Raoul Belzeaux
  • Pierre-Michel Llorca

Abstract

Objectives: The aims of our study were to explore the factor structure and psychometric properties of the French version of the Beliefs about Medicines Questionnaire (BMQ) in patients with severe mental illness and in specific populations of patients with schizophrenia, bipolar disorder and major depressive disorder. Methods: A cross-sectional study including patients with schizophrenia, bipolar disorder and major depressive disorder was conducted (n = 150). Principal component analysis (PCA), reliability and validity of the French version of the BMQ were performed. Results: PCA revealed a two-factor structure similar to the original structure for the BMQ-Specific scale but only a one-component solution for the BMQ-General scale in both the total sample and the three subgroups. These subscales have satisfactory internal consistency. Validity was supported by the significant correlations of all BMQ subscales with the Drug Attitude Inventory. Conclusion: The French version of the BMQ appears as a three-dimensional scale and presents satisfactory psychometric properties for use in patients with severe mental illness as well as specific populations of patients with schizophrenia, bipolar disorder and major depressive disorder.

Suggested Citation

  • Ludovic Samalin & Ingrid de Chazeron & Raoul Belzeaux & Pierre-Michel Llorca, 2017. "Exploratory analysis of the French version of the beliefs about medicines questionnaire in patients with severe mental disorders: Factorial structure and reliability in specific populations of schizop," PLOS ONE, Public Library of Science, vol. 12(3), pages 1-12, March.
    • Handle: RePEc:plo:pone00:0173267
    DOI: 10.1371/journal.pone.0173267
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