The structure of PTSD symptoms: A test of alternative models using confirmatory factor analysis

Ask Elklit, Mark Shevlin

Research output: Contribution to journalArticle

72 Citations (Scopus)

Abstract

Objectives. This study aimed to examine the structure of self-reported post-traumatic stress disorder (PTSD) symptoms. Design. Based on previous factor analytic findings and the DSM-IV formulation, six confirmatory factor models were specified and estimated that reflected different symptom clusters. Methods. The analyses were based on responses from 1116 participants who had suffered whiplash injuries and screened for full or subclinical PTSD using the Harvard Trauma Questionnaire. Results. A correlated four-factor model with re-experiencing, avoidance, dysphoria and arousal factors fitted the data very well. Correlations with criteria measures showed that these factors were associated with other trauma related variables in a theoretically predictable way and showed evidence of unique predictive utility. Conclusions. These results concur with previous research findings using different trauma populations but do not reflect the current DSM-IV symptom groupings.
LanguageEnglish
Pages299-313
JournalBritish Journal of Clinical Psychology
Volume46
Issue numberPart 3
DOIs
Publication statusPublished - Sep 2007

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Post-Traumatic Stress Disorders
Statistical Factor Analysis
Diagnostic and Statistical Manual of Mental Disorders
Wounds and Injuries
Whiplash Injuries
Arousal
Research
Population

Cite this

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The structure of PTSD symptoms: A test of alternative models using confirmatory factor analysis. / Elklit, Ask; Shevlin, Mark.

In: British Journal of Clinical Psychology, Vol. 46, No. Part 3, 09.2007, p. 299-313.

Research output: Contribution to journalArticle

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