Contractor, A. A.3; Durham, T. A.3; Brennan, J. A.3; Armour, C.4; Wutrick, H. R.3; Frueh, B. C.3; Elhai, J. D.3
1 Department of Psychology, Det Sundhedsvidenskabelige Fakultet, SDU2 National Center of Psychotraumatology, Department of Psychology, Det Sundhedsvidenskabelige Fakultet, SDU3 unknown4 National Center of Psychotraumatology, Department of Psychology, Det Sundhedsvidenskabelige Fakultet, SDU
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. (C) 2013 Elsevier Ireland Ltd. All rights reserved.
Psychiatry Research, 2014, Vol 215, Issue 1, p. 146-153
PTSD Depression DSM-5 Primary care sample Structural equation modeling Mediation Confirmatory factor analyses POSTTRAUMATIC-STRESS-DISORDER CONFIRMATORY FACTOR-ANALYSIS NATIONAL COMORBIDITY SURVEY PATIENT HEALTH QUESTIONNAIRE-9 PSYCHOLOGICAL DISTRESS UNDERLYING DIMENSIONS SURVEY REPLICATION ANXIETY DISORDERS COMPETING MODELS PHYSICAL HEALTH