A latent profile analysis of the dissociative subtype of PTSD in a sample of UK Armed Forces veterans residing in Northern Ireland

Background: Posttraumatic stress disorder (PTSD) and dissociation have long been associated with each other. In recent years, studies have examined support for the dissociative subtype of PTSD in several different populations. To date, no study has examined whether this subtype exists in UK Armed Forces military veterans residing in Northern Ireland. Northern Ireland has a history of prolonged civil conflict, differentiating the veterans who live in the region from veterans who live in the remainder of the United Kingdom; and increasing the likelihood that they will experience mental health difficulties. Methods: Data was collected through a cross-sectional, self-report survey from military veterans living in Northern Ireland. The effective sample for the current study was 834 veterans (90.38% males, mean age 55.81 years). A latent profile analysis of PTSD and dissociative indicators was conducted to examine the existence of the dissociative PTSD subtype. Results: Four quantitatively different latent profiles were identified; Non-symptomatic, Low PTSD, Moderate PTSD and High PTSD. There was no evidence of a dissociative PTSD subtype. Several military-type variables differentially predicted membership in the latent profiles, including combat exposure, length of service, physical injuries during service and having been medically discharged. Conclusions: The results do not support the Subtype model of the relationship between PTSD and dissociation. However, they have important implications for clinicians working with veterans in the region, as it appears that dissociation is an integral part of the PTSD presentation in Northern Irish veterans.