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J Anxiety Disord. 2014 May;28(4):402-9. doi: 10.1016/j.janxdis.2014.02.005. Epub 2014 Mar 19.

Properties of Swedish posttraumatic stress measures after a disaster.

Author information

  • 1National Centre for Disaster Psychiatry, Department of Neuroscience, Uppsala University, Akademiska sjukhuset ing 10, SE-751 85 Uppsala, Sweden. Electronic address: filip.arnberg@neuro.uu.se.
  • 2National Centre for Disaster Psychiatry, Department of Neuroscience, Uppsala University, Akademiska sjukhuset ing 10, SE-751 85 Uppsala, Sweden. Electronic address: po.michel@gmail.com.
  • 3National Centre for Disaster Psychiatry, Department of Neuroscience, Uppsala University, Akademiska sjukhuset ing 10, SE-751 85 Uppsala, Sweden. Electronic address: kerstin.bergh.johannesson@akademiska.se.

Abstract

This study evaluated the properties of Swedish versions of self-report measures of posttraumatic stress disorder (PTSD), with emphasis on the Impact of Event Scale-Revised (IES-R). Survey data from adult survivors 1, 3, and 6 years after the 2004 Indian Ocean tsunami (n=1506) included the IES-R (from which the IES-6 was derived) and the 12-item General Health Questionnaire (GHQ-12). The PTSD Checklist (PCL) was included in one survey. A structured clinical interview was performed after 6 years (n=142). Factor analyses of the IES-R and PCL indicated that a dysphoric-arousal model provided good fit invariant across assessments. Both measures were accurate in excluding PTSD while all measures provided poorer positive predictive values. The IES-R, but not the IES-6 and GHQ-12, evidenced stability across assessments. In conclusion, the Swedish IES-R and PCL are sound measures of chronic PTSD, and the findings illustrate important temporal aspects of PTSD assessment.

Copyright © 2014 Elsevier Ltd. All rights reserved.

KEYWORDS:

Confirmatory factor analysis; Longitudinal invariance; Mental health; Posttraumatic stress disorder; Sensitivity and specificity; Stressful events

[PubMed - indexed for MEDLINE]
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