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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

Redican, Enya; Cloitre, Marylene; Hyland, Philip; McBride, Orla; Karatzias, Thanos; Murphy, Jamie; Shevlin, Mark

Authors

Enya Redican

Marylene Cloitre

Philip Hyland

Orla McBride

Jamie Murphy

Mark Shevlin



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.

Citation

Redican, E., Cloitre, M., Hyland, P., McBride, O., Karatzias, T., Murphy, J., & Shevlin, M. (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, Article 102497. https://doi.org/10.1016/j.janxdis.2021.102497

Journal Article Type Article
Acceptance Date Nov 2, 2021
Online Publication Date Nov 6, 2021
Publication Date 2022-01
Deposit Date Nov 2, 2021
Publicly Available Date May 7, 2023
Print ISSN 0887-6185
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 85
Article Number 102497
DOI https://doi.org/10.1016/j.janxdis.2021.102497
Keywords ICD-11; Posttraumatic Stress Disorder; Complex Posttraumatic Stress Disorder; factor mixture model
Public URL http://researchrepository.napier.ac.uk/Output/2818244

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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 (accepted version) (446 Kb)
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Licence
http://creativecommons.org/licenses/by-nc-nd/4.0/

Copyright Statement
Accepted version licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) license.





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