title: Major depressive episode among young adults: CIDI-SF versus SCAN consensus diagnoses.
abstract: BACKGROUND
  We aimed to evaluate the diagnostic accuracy of a highly structured diagnostic interview in relation to a semi-structured diagnostic procedure. We compared the World Health Organization Composite International Diagnostic Interview Short Form (CIDI-SF) in diagnosing major depressive episode (MDE) to consensus diagnoses based on the SCAN interview (Schedules for Clinical Assessment in Neuropsychiatry).
  
  
  METHODS
  Subjects comprised a follow-up sample of 239 20-24-year-old former high-school students who were administered the SCAN and immediately thereafter the CIDI-SF. Concordance was estimated for 12-month MDE, using different cut-points of the CIDI-SF and for any affective disorders.
  
  
  RESULTS
  Correspondence between instruments was moderate for MDE (kappa = 0.43, sensitivity 0.71, specificity 0.82), but better for any affective disorder (kappa = 0.60, sensitivity 0.70, specificity 0.90). Most false negatives suffered from their depression as much as those correctly identified by the CIDI-SF. False negativity was mainly due to not endorsing the stem questions of the CIDI-SF. Of the false positives almost half had an affective disorder other than MDE.
  
  
  CONCLUSIONS
  The CIDI-SF seems to function best in identifying a broader category of affective disorders. It could be useful in large-scale community surveys where more extensive psychiatric interviews are not feasible.
authors.affiliation: National Public Health Institute, Department of Mental Health and Alcohol Research, Mannerheimintie, Finland.
authors.forename: T
authors.initials: T
authors.lastname: Aalto-Setälä
authors.forename: L
authors.initials: L
authors.lastname: Haarasilta
authors.forename: M
authors.initials: M
authors.lastname: Marttunen
authors.forename: A
authors.initials: A
authors.lastname: Tuulio-Henriksson
authors.forename: K
authors.initials: K
authors.lastname: Poikolainen
authors.forename: H
authors.initials: H
authors.lastname: Aro
authors.forename: J
authors.initials: J
authors.lastname: Lönnqvist
mesh_terms: D000328:Adult; D003865:Major Depressive Disorder / Q000175:diagnosis* / Q000453:epidemiology*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007406:Interview, Psychological; D008297:Male; D011795:Surveys and Questionnaires