title: Exploring the relationship between underlying dimensions of posttraumatic stress disorder and depression in a national, trauma-exposed military sample.
abstract: BACKGROUND
  Posttraumatic stress disorder (PTSD) and depression are highly comorbid and intercorrelated. Yet little research has examined the underlying processes explaining their interrelationship.
  
  
  METHODS
  In the present survey study, the investigators assessed the combined symptom structure of PTSD and depression symptoms, to examine shared, underlying psychopathological processes. Participants included 740 Canadian military veterans from a national, epidemiological survey, previously deployed on peacekeeping missions and administered the PTSD Checklist and Center for Epidemiological Studies-Depression Scale (CES-D).
  
  
  RESULTS
  An eight-factor PTSD/depression model fit adequately. In analyses validating the structure, PTSD's dysphoria factor was more related to depressive affect than to several other PTSD and depression factors. Somatic problems were more related to dysphoria than to other PTSD factors.
  
  
  CONCLUSIONS
  Only military veterans were sampled, and without the use of structured diagnostic interviews.
  
  
  CONCLUSIONS
  Results highlight a set of interrelationships that PTSD's dysphoria factor shares with specific depression factors, shedding light on the underlying psychopathology of PTSD that emphasizes dysphoric mood.
authors: Department of Psychology, University of Toledo, Ohio 43606-3390, USA. http://www.jon-elhai.com
authors: Jon D
authors: JD
authors: Elhai
authors: Ateka A
authors: AA
authors: Contractor
authors: Patrick A
authors: PA
authors: Palmieri
authors: David
authors: D
authors: Forbes
authors: J Don
authors: JD
authors: Richardson