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    J Interpers Violence. 2010 Jan;25(1):63-74. Epub 2009 Feb 27.

    Duration of exposure and the dose-response model of PTSD.

    Source

    University of Washington Medical School, Department of Psychiatry and Behavioral Sciences, Box 356560, Seattle,WA 98195-0650, USA. dkaysen@u.washington.edu

    Abstract

    A dose-response model underlies posttraumatic stress disorder (PTSD) and posits a relationship between event magnitude and clinical outcome. The present study examines whether one index of event magnitude--duration of exposure--contributes to risk of PTSD among female victims of sexual assault. Findings support a small but significant contribution of event duration to clinical status in the immediate aftermath of trauma but not at 3-month follow-up. The opposite pattern is obtained for subjective appraisals of threat. These findings add to a growing literature that suggests that a simple application of the dose-response model to objective event characteristics may be insufficient to explain the risk of PTSD.

    PMID:
    19252066
    [PubMed - indexed for MEDLINE]
    PMCID:
    PMC2962551
    Free PMC Article

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