Confirmatory factor analyses of posttraumatic stress symptoms in deployed and nondeployed veterans of the Gulf war

Leonard J. Simms, David Watson, Bradley N. Doebbeling

Research output: Contribution to journalArticle

506 Scopus citations

Abstract

Confirmatory factor analysis was used to compare 6 models of posttraumatic stress disorder (PTSD) symptoms, ranging from 1 to 4 factors, in a sample of 3,695 deployed Gulf War veterans (N = 1,896) and nondeployed controls (N = 1,799). The 4 correlated factors-intrusions, avoidance, hyperarousal, and dysphoria-provided the best fit. The dysphoria factor combined traditional markers of numbing and hyperarousal. Model superiority was cross-validated in multiple subsamples, including a subset of deployed participants who were exposed to traumatic combat stressors. Moreover, convergent and discriminant validity correlations suggested that intrusions may be relatively specific to PTSD, whereas dysphoria may represent a nonspecific component of many disorders. Results are discussed in the context of hierarchical models of anxiety and depression.

Original languageEnglish (US)
Pages (from-to)637-647
Number of pages11
JournalJournal of Abnormal Psychology
Volume111
Issue number4
DOIs
StatePublished - Nov 2002
Externally publishedYes

ASJC Scopus subject areas

  • Psychiatry and Mental health
  • Biological Psychiatry

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