Algorithm Versus Cut-Point Derived PTSD in Ex-Prisoners of War

Joan M. Cook, Richard Thompson, James C. Coyne, Javaid Sheikh

Research output: Contribution to journalArticle

24 Citations (Scopus)


This study compared symptom-based algorithm to cut-point scoring of the PTSD Checklist (PCL) in a sample of 504 World War II ex-prisoners of war not seeking treatment. There was relatively high correspondence (κ = .80) between the scoring methods; the algorithm identified more participants as having PTSD than the standard cut-point of 50. Receiver Operator Curve analyses revealed that a cut-point of 42 distinguished optimally between the algorithm-defined PTSD and non-PTSD groups. An optimal scoring method might use both cut-point and algorithm, ensuring individuals have the symptoms necessary for a diagnosis and of sufficient severity.

Original languageEnglish
Pages (from-to)267-271
Number of pages5
JournalJournal of Psychopathology and Behavioral Assessment
Issue number4
Publication statusPublished - Dec 2003
Externally publishedYes



  • Prisoners of war
  • Psychometrics
  • PTSD
  • PTSD Checklist

ASJC Scopus subject areas

  • Psychology(all)
  • Clinical Psychology

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