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Related Experiment Videos

A brief case-finding questionnaire for common mental disorders: the CMDQ.

Kaj Sparle Christensen1, Per Fink, Tomas Toft

  • 1The Research Unit for General Practice, University of Aarhus, Denmark. kasc@alm.au.dk

Family Practice
|April 9, 2005
PubMed
Summary

This study validated the Common Mental Disorders Questionnaire (CMDQ) for identifying mental health conditions in primary care. The CMDQ showed high accuracy, outperforming general practitioners in diagnosing disorders.

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Area of Science:

  • Psychiatry
  • General Practice
  • Epidemiology

Background:

  • Common mental disorders (CMD) are prevalent in primary care settings.
  • Accurate case-finding is crucial for timely and effective treatment.
  • Existing screening tools may have limitations in diverse primary care populations.

Purpose of the Study:

  • To validate the external validity of a new case-finding instrument, the Common Mental Disorders Questionnaire (CMDQ).
  • To assess the diagnostic accuracy of the CMDQ compared to the Schedules for Clinical Assessment in Neuropsychiatry (SCAN) as a gold standard.
  • To evaluate the CMDQ's utility as a diagnostic aid in primary care.

Main Methods:

  • A cross-sectional, two-phase study involving 1785 adult patients across 28 general practices.

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  • Patients completed screening questionnaires for somatisation, anxiety, depression, and alcohol abuse.
  • A subsample underwent the SCAN interview, serving as the gold standard for validation.

    • Main Results:

    • The CMDQ demonstrated high sensitivity and specificity for diagnosing depressive, anxiety, and alcohol use disorders.
    • For somatisation disorder, SCL-SOM showed 83% sensitivity and 56% specificity, while Whiteley-7 showed 75% sensitivity and 52% specificity.
    • Overall, the CMDQ exhibited higher diagnostic accuracy than general practitioners across evaluated diagnoses.

    Conclusions:

    • The Common Mental Disorders Questionnaire (CMDQ) possesses excellent external validity.
    • The CMDQ is a valuable diagnostic aid for identifying common mental disorders in primary care.
    • Implementation of the CMDQ can improve case-finding and subsequent patient management.