The co-occurrence of PTSD and dissociation: differentiating severe PTSD from dissociative-PTSD

Cherie Armour, Karen-Inge Karstoft, J. Don Richardson

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

PurposeA dissociative-posttraumatic stress disorder (PTSD) subtype has been included in the DSM-5. However, it is not yet clear whether certain socio-demographic characteristics or psychological/clinical constructs such as comorbid psychopathology differentiate between severe PTSD and dissociative-PTSD. The current study investigated the existence of a dissociative-PTSD subtype and explored whether a number of trauma and clinical covariates could differentiate between severe PTSD alone and dissociative-PTSD.MethodsThe current study utilized a sample of 432 treatment seeking Canadian military veterans. Participants were assessed with the Clinician Administered PTSD Scale (CAPS) and self-report measures of traumatic life events, depression, and anxiety. CAPS severity scores were created reflecting the sum of the frequency and intensity items from each of the 17 PTSD and 3 dissociation items. The CAPS severity scores were used as indicators in a latent profile analysis (LPA) to investigate the existence of a dissociative-PTSD subtype. Subsequently, several covariates were added to the model to explore differences between severe PTSD alone and dissociative-PTSD.ResultsThe LPA identified five classes: one of which constituted a severe PTSD group (30.5 %), and one of which constituted a dissociative-PTSD group (13.7 %). None of the included, demographic, trauma, or clinical covariates were significantly predictive of membership in the dissociative-PTSD group compared to the severe PTSD group.ConclusionsIn conclusion, a significant proportion of individuals report high levels of dissociation alongside their PTSD, which constitutes a dissociative-PTSD subtype. Further investigation is needed to identify which factors may increase or decrease the likelihood of membership in a dissociative-PTSD subtype group compared to a severe PTSD only group.
LanguageEnglish
Pages1297-1306
JournalSocial Psychiatry and Psychiatric Epidemiology
Volume49
Issue number8
DOIs
Publication statusPublished - 2014

Fingerprint

Dissociative Disorders
posttraumatic stress disorder
Post-Traumatic Stress Disorders
Group
trauma

Keywords

  • Posttraumatic stress disorder
  • Dissociation
  • Dissociative subtype
  • CAPS
  • LPA
  • Veterans
  • Canadian

Cite this

Armour, Cherie ; Karstoft, Karen-Inge ; Richardson, J. Don. / The co-occurrence of PTSD and dissociation: differentiating severe PTSD from dissociative-PTSD. 2014 ; Vol. 49, No. 8. pp. 1297-1306.
@article{46f6ac946289473aa7de4fbea22220f9,
title = "The co-occurrence of PTSD and dissociation: differentiating severe PTSD from dissociative-PTSD",
abstract = "PurposeA dissociative-posttraumatic stress disorder (PTSD) subtype has been included in the DSM-5. However, it is not yet clear whether certain socio-demographic characteristics or psychological/clinical constructs such as comorbid psychopathology differentiate between severe PTSD and dissociative-PTSD. The current study investigated the existence of a dissociative-PTSD subtype and explored whether a number of trauma and clinical covariates could differentiate between severe PTSD alone and dissociative-PTSD.MethodsThe current study utilized a sample of 432 treatment seeking Canadian military veterans. Participants were assessed with the Clinician Administered PTSD Scale (CAPS) and self-report measures of traumatic life events, depression, and anxiety. CAPS severity scores were created reflecting the sum of the frequency and intensity items from each of the 17 PTSD and 3 dissociation items. The CAPS severity scores were used as indicators in a latent profile analysis (LPA) to investigate the existence of a dissociative-PTSD subtype. Subsequently, several covariates were added to the model to explore differences between severe PTSD alone and dissociative-PTSD.ResultsThe LPA identified five classes: one of which constituted a severe PTSD group (30.5 {\%}), and one of which constituted a dissociative-PTSD group (13.7 {\%}). None of the included, demographic, trauma, or clinical covariates were significantly predictive of membership in the dissociative-PTSD group compared to the severe PTSD group.ConclusionsIn conclusion, a significant proportion of individuals report high levels of dissociation alongside their PTSD, which constitutes a dissociative-PTSD subtype. Further investigation is needed to identify which factors may increase or decrease the likelihood of membership in a dissociative-PTSD subtype group compared to a severe PTSD only group.",
keywords = "Posttraumatic stress disorder, Dissociation, Dissociative subtype, CAPS, LPA, Veterans, Canadian",
author = "Cherie Armour and Karen-Inge Karstoft and Richardson, {J. Don}",
year = "2014",
doi = "10.1007/s00127-014-0819-y",
language = "English",
volume = "49",
pages = "1297--1306",
number = "8",

}

The co-occurrence of PTSD and dissociation: differentiating severe PTSD from dissociative-PTSD. / Armour, Cherie; Karstoft, Karen-Inge; Richardson, J. Don.

Vol. 49, No. 8, 2014, p. 1297-1306.

Research output: Contribution to journalArticle

TY - JOUR

T1 - The co-occurrence of PTSD and dissociation: differentiating severe PTSD from dissociative-PTSD

AU - Armour, Cherie

AU - Karstoft, Karen-Inge

AU - Richardson, J. Don

PY - 2014

Y1 - 2014

N2 - PurposeA dissociative-posttraumatic stress disorder (PTSD) subtype has been included in the DSM-5. However, it is not yet clear whether certain socio-demographic characteristics or psychological/clinical constructs such as comorbid psychopathology differentiate between severe PTSD and dissociative-PTSD. The current study investigated the existence of a dissociative-PTSD subtype and explored whether a number of trauma and clinical covariates could differentiate between severe PTSD alone and dissociative-PTSD.MethodsThe current study utilized a sample of 432 treatment seeking Canadian military veterans. Participants were assessed with the Clinician Administered PTSD Scale (CAPS) and self-report measures of traumatic life events, depression, and anxiety. CAPS severity scores were created reflecting the sum of the frequency and intensity items from each of the 17 PTSD and 3 dissociation items. The CAPS severity scores were used as indicators in a latent profile analysis (LPA) to investigate the existence of a dissociative-PTSD subtype. Subsequently, several covariates were added to the model to explore differences between severe PTSD alone and dissociative-PTSD.ResultsThe LPA identified five classes: one of which constituted a severe PTSD group (30.5 %), and one of which constituted a dissociative-PTSD group (13.7 %). None of the included, demographic, trauma, or clinical covariates were significantly predictive of membership in the dissociative-PTSD group compared to the severe PTSD group.ConclusionsIn conclusion, a significant proportion of individuals report high levels of dissociation alongside their PTSD, which constitutes a dissociative-PTSD subtype. Further investigation is needed to identify which factors may increase or decrease the likelihood of membership in a dissociative-PTSD subtype group compared to a severe PTSD only group.

AB - PurposeA dissociative-posttraumatic stress disorder (PTSD) subtype has been included in the DSM-5. However, it is not yet clear whether certain socio-demographic characteristics or psychological/clinical constructs such as comorbid psychopathology differentiate between severe PTSD and dissociative-PTSD. The current study investigated the existence of a dissociative-PTSD subtype and explored whether a number of trauma and clinical covariates could differentiate between severe PTSD alone and dissociative-PTSD.MethodsThe current study utilized a sample of 432 treatment seeking Canadian military veterans. Participants were assessed with the Clinician Administered PTSD Scale (CAPS) and self-report measures of traumatic life events, depression, and anxiety. CAPS severity scores were created reflecting the sum of the frequency and intensity items from each of the 17 PTSD and 3 dissociation items. The CAPS severity scores were used as indicators in a latent profile analysis (LPA) to investigate the existence of a dissociative-PTSD subtype. Subsequently, several covariates were added to the model to explore differences between severe PTSD alone and dissociative-PTSD.ResultsThe LPA identified five classes: one of which constituted a severe PTSD group (30.5 %), and one of which constituted a dissociative-PTSD group (13.7 %). None of the included, demographic, trauma, or clinical covariates were significantly predictive of membership in the dissociative-PTSD group compared to the severe PTSD group.ConclusionsIn conclusion, a significant proportion of individuals report high levels of dissociation alongside their PTSD, which constitutes a dissociative-PTSD subtype. Further investigation is needed to identify which factors may increase or decrease the likelihood of membership in a dissociative-PTSD subtype group compared to a severe PTSD only group.

KW - Posttraumatic stress disorder

KW - Dissociation

KW - Dissociative subtype

KW - CAPS

KW - LPA

KW - Veterans

KW - Canadian

U2 - 10.1007/s00127-014-0819-y

DO - 10.1007/s00127-014-0819-y

M3 - Article

VL - 49

SP - 1297

EP - 1306

IS - 8

ER -