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Assessing the fit of the Dysphoric Arousal model across two nationally representative epidemiological surveys: The Australian NSMHWB and the United States NESARC.
MedLine Citation:
PMID:  23254262     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Since the initial inclusion of PTSD in the DSM nomenclature, PTSD symptomatology has been distributed across three symptom clusters. However, a wealth of empirical research has concluded that PTSD's latent structure is best represented by one of two four-factor models: Numbing or Dysphoria. Recently, a newly proposed five-factor Dysphoric Arousal model, which separates the DSM-IV's Arousal cluster into two factors of Anxious Arousal and Dysphoric Arousal, has gathered support across a variety of trauma samples. To date, the Dysphoric Arousal model has not been assessed using nationally representative epidemiological data. We employed confirmatory factor analysis to examine PTSD's latent structure in two independent population based surveys from American (NESARC) and Australia (NSWHWB). We specified and estimated the Numbing model, the Dysphoria model, and the Dysphoric Arousal model in both samples. Results revealed that the Dysphoric Arousal model provided superior fit to the data compared to the alternative models. In conclusion, these findings suggest that items D1-D3 (sleeping difficulties; irritability; concentration difficulties) represent a separate, fifth factor within PTSD's latent structure using nationally representative epidemiological data in addition to single trauma specific samples.
Authors:
Cherie Armour; Natacha Carragher; Jon D Elhai
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-17
Journal Detail:
Title:  Journal of anxiety disorders     Volume:  27     ISSN:  1873-7897     ISO Abbreviation:  J Anxiety Disord     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-12-20     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8710131     Medline TA:  J Anxiety Disord     Country:  -    
Other Details:
Languages:  ENG     Pagination:  109-115     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier Ltd. All rights reserved.
Affiliation:
National Centre for Psychotraumatology, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark. Electronic address: armour.cherie@gmail.com.
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