Redican, Enya and Cloitre, Marylene and Hyland, Philip and McBride, Orla and Karatzias, Thanos and Murphy, Jamie and Shevlin, Mark (2022) The latent structure of ICD-11 posttraumatic stress disorder (PTSD) and complex PTSD in a general population sample from USA: A factor mixture modelling approach. Journal of Anxiety Disorders, 85. p. 102497. ISSN 0887-6185

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Abstract

The validity of ICD-11 Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD), as measured by the International Trauma Questionnaire (ITQ; Cloitre et al., 2018) has been supported in many factor analytic and mixture modelling studies. There is, however, a paucity of research investigating the latent structure of the ITQ using factor mixture modelling (FMM). FMM was applied to data collected from a nationally representative sample of U.S. adults (N = 1834). FMM results demonstrated strong support for a two-factor second-order model with four qualitatively distinct latent classes: a ‘PTSD class’, a ‘CPTSD class’, a ‘DSO’ (Disturbances in Self-Organisation) class and a ‘low symptoms class’. Sexual abuse increased likelihood of membership to the ‘CPTSD’ (OR = 3.22) and physical abuse decreased likelihood of membership to the ‘PTSD’ (OR=0.51). Trauma exposure in adulthood predicted ‘PTSD’ and ‘CPTSD’ class membership. The ‘CPTSD class’ was characterised by higher levels of psychopathological co-morbidities and poorer psychological wellbeing compared to all other classes. Results provide additional support for the validity of PTSD and CPTSD as measured by the ITQ

Item Type:	Article
Additional Information:	Cite as:Enya Redican, Marylene Cloitre, Philip Hyland, Orla McBride, Thanos Karatzias, Jamie Murphy, Mark Shevlin, The latent structure of ICD-11 posttraumatic stress disorder (PTSD) and complex PTSD in a general population sample from USA: A factor mixture modelling approach, Journal of Anxiety Disorders, Volume 85, 2022, 102497, ISSN 0887-6185, https://doi.org/10.1016/j.janxdis.2021.102497.
Keywords:	ICD-11 Posttraumatic Stress Disorder; Complex Posttraumatic Stress Disorder; Factor mixture model;
Academic Unit:	Assisting Living & Learning,ALL institute Faculty of Science and Engineering > Psychology
Item ID:	17063
Identification Number:	https://doi.org/10.1016/j.janxdis.2021.102497
Depositing User:	Philip Hyland
Date Deposited:	23 Mar 2023 11:56
Journal or Publication Title:	Journal of Anxiety Disorders
Publisher:	Elsevier
Refereed:	Yes
URI:	Publisher
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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