DSM-5 PTSD's symptom dimensions and relations with major depression's symptom dimensions in a primary care sample

Ateka A. Contractor, Tory A. Durham, Julie A. Brennan, Cherie Armour, Hanna R. Wutrick, B. Christopher Frueh, Jon D. Elhai

Research output: Contribution to journalArticle

82 Citations (Scopus)
77 Downloads (Pure)

Abstract

Existing literature indicates significant comorbidity between posttraumatic stress disorder (PTSD) and major depression. We examined whether PTSD's dysphoria and mood/cognitions factors, conceptualized by the empirically supported four-factor DSM-5 PTSD models, account for PTSD's inherent relationship with depression. We hypothesized that depression's somatic and non-somatic factors would be more related to PTSD's dysphoria and mood/cognitions factors than other PTSD model factors. Further, we hypothesized that PTSD's arousal would significantly mediate relations between PTSD's dysphoria and somatic/non-somatic depression. Using 181 trauma-exposed primary care patients, confirmatory factor analyses (CFA) indicated a well-fitting DSM-5 PTSD dysphoria model, DSM-5 numbing model and two-factor depression model. Both somatic and non-somatic depression factors were more related to PTSD's dysphoria and mood/cognitions factors than to re-experiencing and avoidance factors; non-somatic depression was more related to PTSD's dysphoria than PTSD's arousal factor. PTSD's arousal did not mediate the relationship between PTSD's dysphoria and somatic/non-somatic depression. Implications are discussed.
Original languageEnglish
Pages (from-to)146-153
JournalPsychiatry research
Volume215
Issue number1
DOIs
Publication statusPublished - 2014

Keywords

  • Confirmatory factor analyses
  • DSM-5
  • Depression
  • Mediation
  • PTSD
  • Primary care sample
  • Structural equation modeling

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