Major depressive episode among young adults: CIDI-SF versus SCAN consensus diagnoses.
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.
Aalto-Setälä
T
T
National Public Health Institute, Department of Mental Health and Alcohol Research, Mannerheimintie, Finland.
Haarasilta
L
L
Marttunen
M
M
Tuulio-Henriksson
A
A
Poikolainen
K
K
Aro
H
H
Lönnqvist
J
J
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