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. 2018 May;86(5):439-451.
doi: 10.1037/ccp0000297.

Exploring evidence of a dissociative subtype in PTSD: Baseline symptom structure, etiology, and treatment efficacy for those who dissociate

Mark S Burton  1 , Norah C Feeny  1 , Arin M Connell  1 , Lori A Zoellner  2
Affiliations

Exploring evidence of a dissociative subtype in PTSD: Baseline symptom structure, etiology, and treatment efficacy for those who dissociate

Mark S Burton et al. J Consult Clin Psychol. 2018 May.

Abstract

Objective: With the inclusion of a dissociative subtype, recent changes to the DSM-5 diagnosis of posttraumatic stress disorder (PTSD) have emphasized the role of dissociation in the experience and treatment of the disorder. However, there is a lack of research exploring the clinical impact for highly dissociative groups receiving treatment for PTSD. The current study examined the presence and clinical impact of a dissociative subtype in a sample of individuals receiving treatment for chronic PTSD.

Method: This study used latent transition analyses (LTA), an expanded form of latent profile analyses (LPA), to examine latent profiles of PTSD and dissociation symptoms before and after treatment for individuals (N = 200) receiving prolonged exposure (PE) or sertraline treatment for chronic PTSD.

Results: The best fitting LTA model was one with a 4-class solution at both pretreatment and posttreatment. There was a latent class at pretreatment with higher levels of dissociative symptoms. However, this class was also marked by higher reexperiencing symptoms, and membership was not predicted by chronic child abuse. Further, although those in the class were less likely to transition to the responder class overall, this was not the case for exposure-based treatment specifically.

Conclusion: These findings are not in line with the dissociative-subtype theoretical literature that proposes those who dissociate represent a clinically distinct group that may respond worse to exposure-based treatments for PTSD. (PsycINFO Database Record

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Figures

Figure 1
Figure 1
Estimated Baseline Latent Profiles for PTSD and Dissociation Symptoms Note. DES-D = Dissociative Experiences Scale-Depersonalization/Derealization subscale. It was rescaled from 0–100 to 0–3 to be included in the figure
Figure 2
Figure 2
Estimated Post-Treatment Latent Profiles for PTSD and Dissociation Symptoms Note. DES-D = Dissociative Experiences Scale-Depersonalization/Derealization subscale. It was rescaled from 0–100 to 0–3 to be included in the figure
See this image and copyright information in PMC

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