An evaluation of the associations among posttraumatic stress disorder, depression, and complicated grief in active duty military personnel with traumatic loss

Between 44% and 87% of active duty service members and veterans who deployed following the September 11, 2001, terrorist attacks know someone who was killed or seriously injured in combat. Considering the high frequency and known impact of traumatic loss, it is important to understand if and how traumatic loss may impede posttraumatic stress disorder (PTSD) treatment progress in military personnel. Additionally, experiencing a traumatic loss elevates the risk of developing prolonged grief disorder (PGD), which is associated with higher levels of PTSD symptoms, more functional impairment, and more lifetime suicide attempts among military personnel. Given what is known about the association between PGD and PTSD in treatment-seeking service members and veterans, it is also important to understand whether grief-related symptom severity negatively impacts PTSD treatment response. The current study examined associations among traumatic loss, complicated grief, depressive symptoms, and PTSD treatment response among military personnel (N = 127) who participated in variable-length cognitive processing therapy (CPT). There was no direct, F(2, 125) = 0.77, p = .465, or indirect, β = .02, p = .677, association between a traumatic loss index event and PTSD treatment response compared with other trauma types. Prior assessments of depressive symptom severity were directly related to PTSD at later assessments across two models, ps < .001–p = .021 Participants with a traumatic loss index trauma demonstrated significant reductions in complicated grief, depressive symptoms, and PTSD following CPT, ps < .001, ds = −0.61–−0.83. Implications, study limitations, and suggestions for future research are presented.