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Probability of major depression diagnostic classification using semi-structured versus fully structured diagnostic

Brooke Levis1, Andrea Benedetti2, Kira E Riehm3

  • 1Lady Davis Institute for Medical Research,Jewish General Hospital,Montréal,Québec,CanadaandDepartment of Epidemiology, Biostatistics and Occupational Health,McGill University,Montréal,Québec,Canada.

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The Mini International Neuropsychiatric Interview (MINI) may identify more individuals as depressed compared to the Composite International Diagnostic Interview (CIDI). Diagnostic interview methods for major depression classification are not interchangeable.

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Area of Science:

  • Psychiatry
  • Clinical Psychology
  • Epidemiology

Background:

  • Major depression classification in research relies on various diagnostic interviews.
  • Semi-structured interviews incorporate clinical judgment, while fully structured interviews are scripted.
  • The Mini International Neuropsychiatric Interview (MINI) is a brief, fully structured interview sometimes used in research.

Purpose of the Study:

  • To evaluate the association between diagnostic interview method and the odds of major depression classification.
  • To control for depressive symptom scores and participant characteristics in the analysis.

Main Methods:

  • A meta-analysis of individual participant data from the Patient Health Questionnaire-9 (PHQ-9) diagnostic accuracy studies was conducted.
  • Binomial generalized linear mixed models were fitted to analyze data from 17,158 participants across 57 primary studies.

Main Results:

  • The MINI showed higher odds of major depression classification compared to the Composite International Diagnostic Interview (CIDI) (OR = 2.10).
  • Fully structured interviews (excluding MINI) were non-significantly more likely to classify participants with low depressive symptoms (PHQ-9 ≤6) as depressed (OR = 3.13).
  • Fully structured interviews (excluding MINI) were significantly less likely to classify participants with high depressive symptoms (PHQ-9 ≥16) as depressed (OR = 0.50).

Conclusions:

  • The MINI may lead to a higher identification of depression compared to the CIDI.
  • Semi-structured and fully structured interview methods may not be interchangeable for major depression classification.
  • Further research is needed to replicate these findings on diagnostic interview methods.