title: Diagnostic agreement between the Personality Diagnostic Questionnaire-4+ (PDQ-4+) and its Clinical Significance Scale.
abstract: BACKGROUND
  The Personality Diagnostic Questionnaire-4+ (PDQ-4+) is composed of a self-report and an interview, the Clinical Significance Scale, but no studies have reported joint findings. This study is the first to examine the diagnostic agreement between the Spanish version of the PDQ-4+ self-report and its corresponding interview.
  
  
  METHODS
  The sample comprised 235 psychiatric outpatients who were assessed with both instruments.
  
  
  RESULTS
  The interview reduced to one half the number of diagnoses provided by self-report (83.4% to 38.3%; mean number of diagnoses 3.29 to .62). Diagnostic agreement was between fair and moderate (mean kappa .45 for PDQ-4+ total score).
  
  
  CONCLUSIONS
  Findings suggest the utility of jointly administering the PDQ-4+ and its Clinical Significance Scale to screen for the presence or absence of personality disorders (PDs). Modifications in the diagnostic cut-offs for individual PDs and the PDQ-4+ total score may improve the efficacy of the instrument.
authors.affiliation: Psychiatry Department. Hospital Vall d'Hebrón. CIBERSAM, Universidad Autónoma de Barcelona.
authors.forename: Natalia
authors.initials: N
authors.lastname: Calvo
authors.forename: Fernando
authors.initials: F
authors.lastname: Gutiérrez
authors.forename: Miguel
authors.initials: M
authors.lastname: Casas
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001008:Anxiety Disorders / Q000523:psychology; D005260:Female; D006801:Humans; D007406:Interview, Psychological; D008297:Male; D008875:Middle Aged; D019964:Mood Disorders / Q000523:psychology; D010045:Outpatients / Q000523:psychology; D010552:Personality Assessment; D010554:Personality Disorders / Q000175:diagnosis* / Q000523:psychology; D010555:Personality Inventory; D015203:Reproducibility of Results; D057566:Self Report; D011795:Surveys and Questionnaires; D055815:Young Adult