Citation

Hyland P, Brewin CR, Maercker A. J. Trauma. Stress 2017; 30(2): 125-132.

Affiliation

Department of Psychology, Division of Psychopathology, University of Zurich, Zurich, Switzerland.

Copyright

(Copyright © 2017, International Society for Traumatic Stress Studies, Publisher John Wiley and Sons)

DOI

10.1002/jts.22171

PMID

28370300

Abstract

The 11(th) edition of the International Classification of Diseases (ICD-11; World Health Organization, 2017) proposes a model of posttraumatic stress disorder (PTSD) that includes 6 symptoms. This study assessed the ability of a classification-independent measure of posttraumatic stress symptoms, the Impact of Event Scale-Revised (Weiss & Marmar, 1996), to capture the ICD-11 model of PTSD. The current study also provided the first assessment of the predictive validity of ICD-11 PTSD. Former East German political prisoners were assessed in 1994 (N = 144) and in 2008-2009 (N = 88) on numerous psychological variables using self-report measures. Of the participants, 48.2% and 36.8% met probable diagnosis for ICD-11 PTSD at the first and second assessments, respectively. Confirmatory factor analysis supported the factorial validity of the 3-factor ICD-11 model of PTSD, as represented by items selected from the Impact of Event Scale-Revised. Hierarchical multiple regression analysis demonstrated that, controlling for sex, the symptom clusters of ICD-11 PTSD (reexperiencing, avoidance, and sense of threat) significantly contributed to the explanation of depression (R(2) =.17), quality of life (R(2) =.21), internalized anger (R(2) =.10), externalized anger (R(2) =.12), hatred of perpetrators (R(2) =.15), dysfunctional disclosure (R(2) =.27), and social acknowledgment as a victim (R(2) =.12) across the 15-year study period. Current findings add support for the factorial and predictive validity of ICD-11 PTSD within a unique cohort of political prisoners.

Copyright © 2017 International Society for Traumatic Stress Studies.

Language: en