Journal article
Factor structure of posttraumatic stress disorder (PTSD) in Australian Vietnam Veterans: Confirmatory factor analysis of the Clinician-Administered PTSD Scale for DSM–5
Journal of Military, Veteran and Family Health, Vol.6(1), pp.48-57
2020
Abstract
Introduction: The Diagnostic and Statistical Manual of Mental Disorders (5th ed.; DSM–5) brought a change to the symptom clusters of posttraumatic stress disorder (PTSD). In line with the DSM–5 changes, an updated version of the Clinician-Administered PTSD Scale (CAPS–5) was released. The CAPS–5 is considered to be the gold-standard measure of PTSD; however, examinations of the psychometric properties and optimal factor structure of this scale are underrepresented in PTSD studies. Methods: This study used confirmatory factor analysis (CFA) to assess the factor structure of the CAPS–5 using a sample of 267 male Australian Vietnam Veterans. Models drawn from the PTSD CFA literature were used to test the underlying dimensions of PTSD: the four-factor DSM–5 model, six-factor externalizing behaviour and anhedonia models, and seven-factor hybrid model. Results: The results found that the DSM–5 model showed slightly less than adequate fit (comparative fit index [CFI] = 0.90, Tucker–Lewis index [TLI] = 0.88, root mean square error of approximation [RMSEA] = 0.064), however, other models showed acceptable fit. The anhedonia model provided a significantly better fit than the other models (CFI = 0.92, TLI = 0.90, RMSEA = 0.059). Discussion: Overall, the results supported the anhedonia model. This result may indicate that the underlying dimensions of PTSD in Australian Vietnam Veterans may best be represented by six distinct factors.
Details
- Title
- Factor structure of posttraumatic stress disorder (PTSD) in Australian Vietnam Veterans: Confirmatory factor analysis of the Clinician-Administered PTSD Scale for DSM–5
- Authors
- John Gilmour (Author) - Greenslopes Private HospitalMadeline Romaniuk (Author) - Greenslopes Private HospitalRoss Young (Group Member) - Queensland University of Technology
- Contributors
- PTSD Initiative (Research Group)
- Publication details
- Journal of Military, Veteran and Family Health, Vol.6(1), pp.48-57
- Publisher
- University of Toronto Press
- DOI
- 10.3138/jmvfh-2018-0042
- ISSN
- 2368-7924
- Organisation Unit
- Office of the Deputy Vice-Chancellor (Research and Innovation); University of the Sunshine Coast, Queensland
- Language
- English
- Record Identifier
- 99550997002621
- Output Type
- Journal article
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Source: InCites