title: 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.
abstract: OBJECTIVE
  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.
  
  
  CONCLUSIONS
  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.
authors.affiliation: Department of Adult Psychiatry, CHU Clermont-Ferrand, University of Auvergne, EA, Clermont-Ferrand, France.|Bipolar Disorder Unit, Institute of Neuroscience, Hospital Clinic, University of Barcelona, IDIBAPS, CIBERSAM, Barcelona, Catalonia, Spain.|Fondation FondaMental, Créteil, France.
authors.forename: Ludovic
authors.initials: L
authors.lastname: Samalin
authors.affiliation: Department of Adult Psychiatry, CHU Clermont-Ferrand, University of Auvergne, EA, Clermont-Ferrand, France.
authors.forename: Ingrid
authors.initials: I
authors.lastname: de Chazeron
authors.affiliation: Fondation FondaMental, Créteil, France.|Bipolar Disorder Expert Centre, Hôpital Sainte Marguerite, APHM, Marseille, France.|Department of Psychiatry, McGill Group for Suicide Studies, Douglas Mental Health University Institute, McGill University, Montreal, Quebec, Canada.
authors.forename: Raoul
authors.initials: R
authors.lastname: Belzeaux
authors.affiliation: Department of Adult Psychiatry, CHU Clermont-Ferrand, University of Auvergne, EA, Clermont-Ferrand, France.|Fondation FondaMental, Créteil, France.
authors.forename: Pierre-Michel
authors.initials: PM
authors.lastname: Llorca
mesh_terms: D000328:Adult; D000368:Aged; D001714:Bipolar Disorder / Q000453:epidemiology* / Q000503:physiopathology / Q000628:therapy; D003430:Cross-Sectional Studies; D003865:Major Depressive Disorder / Q000453:epidemiology* / Q000503:physiopathology / Q000628:therapy; D005260:Female; D005602:France; D006801:Humans; D007802:Language; D008297:Male; D008875:Middle Aged; D025341:Principal Component Analysis; D011594:Psychometrics / Q000379:methods*; D012559:Schizophrenia / Q000453:epidemiology* / Q000503:physiopathology / Q000628:therapy; D011795:Surveys and Questionnaires / Q000592:standards