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Original Research

The Stressor Criterion for Posttraumatic Stress Disorder: Does It Matter?

Andrea L. Roberts, PhD; Bruce P. Dohrenwend, PhD; Allison E. Aiello, ScD; Rosalind J. Wright, MD, MPH; Andreas Maercker, MD, PhD; Sandro Galea, MD, DrPH; and Karestan C. Koenen, PhD

Published: February 15, 2012

Article Abstract

Objective: The definition of the stressor criterion (DSM criterion A1) for posttraumatic stress disorder (PTSD) is hotly debated with major revisions being considered for DSM-5. We examine whether symptoms, course, and consequences of PTSD vary predictably with the type of stressful event that precipitates symptoms.

Method: We used data from the 2009 PTSD diagnostic subsample (N = 3,013) of women from the Nurses’ Health Study II. We asked respondents about exposure to stressful events that qualified under DSM-III or DSM-IV or did not qualify under DSM criterion A1. Respondents selected the event they considered worst and reported subsequent PTSD symptoms. Among participants who met all other DSM-IV PTSD criteria, we compared distress, symptom severity, duration, impairment, receipt of professional help, and 9 physical, behavioral, and psychiatric sequelae (eg, physical functioning, unemployment, depression) by precipitating event group. Various assessment tools were used to determine fulfillment of PTSD criteria B through F and to assess these 14 outcomes.

Results: Participants with PTSD from DSM-III events reported, on average, 1 more symptom (DSM-III, mean = 11.8 symptoms; DSM-IV, mean = 10.7 [P < .001]; non-DSM, mean = 10.9 [P < .01]) and more often reported that symptoms lasted 1 year or longer compared to participants with PTSD from other groups (DSM-III vs DSM-IV, P < .01; DSM-III vs non-DSM, P < .001). However, sequelae of PTSD did not vary systematically with precipitating event type.

Conclusions: Results indicate the stressor criterion as defined by the DSM may not be informative in characterizing PTSD symptoms and sequelae. In the context of ongoing DSM-5 revision, these results suggest that criterion A1 could be expanded in DSM-5 without much consequence for our understanding of PTSD phenomenology. Events not considered qualifying stressors under the DSM produced PTSD as consequential as PTSD following DSM-III events, suggesting PTSD may be an aberrantly severe but nonspecific stress response syndrome.

J Clin Psychiatry 2012;73(2):e264-e270

Submitted: April 7, 2011; accepted June 30, 2011

(doi:10.4088/JCP.11m07054).

Corresponding author: Andrea L. Roberts, PhD, Harvard School of Public Health, 677 Huntington Ave, Boston, MA 02115 (aroberts@hsph.harvard.edu).

Volume: 73

Quick Links: PTSD , Trauma

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