MRCPsych Teaching 2008




Critical Appraisal of Diagnostic Test Studies



   Alex J Mitchell
   Consultant in Liaison Ps...
Contents
• Importance of understanding diagnostic tests

• Statistics of diagnostic validity

• Examples
Importance of understanding diagnostic tests
What Is a Diagnostic Test in Psychiatry?
•   CT/MRI
•   CSF
•   Blood tests eg TFTs
•   SCAN/SCID/PSE/MINI
•   Neuropsycho...
Why Is a HADS score not a diagnosis?
Why Is a HADS score not a diagnosis?

  1. No core features
  2. No symptom ranking
  3. No functional assessment
  4. Dur...
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)
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MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)

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This is an educational talk/presentation on the science of diagnostic tests using examples from psychiatry. It was first presented for MRCPsych (Royal College of Psychiatrists UK) June 2008. Now updated in 2009...see newer version

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MRCPsych08 - How To Analyse Diagnostic Test Studies (June08)

  1. 1. MRCPsych Teaching 2008 Critical Appraisal of Diagnostic Test Studies Alex J Mitchell Consultant in Liaison Psychiatry University of Leicester
  2. 2. Contents • Importance of understanding diagnostic tests • Statistics of diagnostic validity • Examples
  3. 3. Importance of understanding diagnostic tests
  4. 4. What Is a Diagnostic Test in Psychiatry? • CT/MRI • CSF • Blood tests eg TFTs • SCAN/SCID/PSE/MINI • Neuropsychological Testing • MMSE • HADS/BDI/CESD? • Clinical Judgement • Self-report
  5. 5. Why Is a HADS score not a diagnosis?
  6. 6. Why Is a HADS score not a diagnosis? 1. No core features 2. No symptom ranking 3. No functional assessment 4. Duration unclear 5. What if Missing items? 6. Imprecise
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