title: Relations between the underlying dimensions of PTSD and major depression using an epidemiological survey of deployed Ohio National Guard soldiers.
abstract: BACKGROUND
  In the present study, the authors investigated the relationship between the underlying symptom dimensions of posttraumatic stress disorder (PTSD) and dimensions of major depressive disorder (MDD).
  
  
  METHODS
  A sample of 1266 Ohio National Guard soldiers with a history of overseas deployment participated and were administered the PTSD Checklist (assessing PTSD) and Patient Health Questionnaire-9 (assessing depression).
  
  
  RESULTS
  Using confirmatory factor analysis, results demonstrated that both PTSD's dysphoria and hyperarousal factors were more related to depression's somatic than non-somatic factor. Furthermore, depression's somatic factor was more related to PTSD's dysphoria than hyperarousal factor.
  
  
  CONCLUSIONS
  Limitations of this study include the use of self-report measures and a predominately male military sample.
  
  
  CONCLUSIONS
  Results indicate that PTSD's dysphoria factor is related to depression specifically by way of depression's somatic construct. Given PTSD's substantial dysphoria/distress component, these results have implications for understanding the nature of PTSD's high comorbidity with depression.
authors.affiliation: Department of Psychology, University of Toledo, Mail Stop #948, 2801 West Bancroft Street, Toledo, OH 43606-3390, United States.
authors.forename: Tracey L
authors.initials: TL
authors.lastname: Biehn
authors.forename: Ateka
authors.initials: A
authors.lastname: Contractor
authors.forename: Jon D
authors.initials: JD
authors.lastname: Elhai
authors.forename: Marijo
authors.initials: M
authors.lastname: Tamburrino
authors.forename: Thomas H
authors.initials: TH
authors.lastname: Fine
authors.forename: Marta R
authors.initials: MR
authors.lastname: Prescott
authors.forename: Edwin
authors.initials: E
authors.lastname: Shirley
authors.forename: Philip K
authors.initials: PK
authors.lastname: Chan
authors.forename: Renee
authors.initials: R
authors.lastname: Slembarski
authors.forename: Israel
authors.initials: I
authors.lastname: Liberzon
authors.forename: Joseph R
authors.initials: JR
authors.lastname: Calabrese
authors.forename: Sandro
authors.initials: S
authors.lastname: Galea
mesh_terms: D000293:Adolescent; D000328:Adult; D015897:Comorbidity; D003865:Major Depressive Disorder / Q000453:epidemiology*; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008889:Military Personnel / Q000523:psychology* / Q000706:statistics & numerical data; D009820:Ohio / Q000453:epidemiology; D011446:Prospective Studies; D013313:Stress Disorders, Post-Traumatic / Q000453:epidemiology*; D011795:Surveys and Questionnaires; D055815:Young Adult