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. 2015 Jun;24(3):249-57.
doi: 10.1017/S2045796014000110. Epub 2014 Mar 17.

Risk of post-traumatic stress disorder following traumatic events in a community sample

J White  1 , J Pearce  2 , S Morrison  2 , F Dunstan  3 , J I Bisson  2 , D L Fone  3
Affiliations

Risk of post-traumatic stress disorder following traumatic events in a community sample

J White et al. Epidemiol Psychiatr Sci. 2015 Jun.

Abstract

Aims: Post-traumatic stress disorder (PTSD) is typically associated with high-risk population groups, but the risk of PTSD that is associated with trauma experienced in the community, and effect of changes in diagnostic criteria in DSM-5 on prevalence in the general population, is unknown.

Methods: Cross-sectional analysis of population-based data from 4558 adults aged 25-83 years resident in Caerphilly county borough, Wales, UK. Exposure to different traumatic events was assessed using categorisation of free-text descriptions of trauma. PTSD caseness was determined using items assessing Diagnostic and Statistical Manual IV (DSM-IV) and DSM-5 A criteria and the Traumatic Screening Questionnaire.

Results: Of the 4558 participants, 1971 (47.0%) reported a traumatic event. The most common DSM-IV A1 qualifying trauma was life-threatening illnesses and injuries (13.6%). The highest risk of PTSD was associated with assaultive violence [34.1%]. The prevalence of PTSD using DSM-IV A criteria was 14.3% (95% confidence interval [CI] = 12.8, 15.9%). Using DSM-5 A criteria reduced the prevalence to 8.0 (95% CI = 6.9, 9.4%), primarily due to exclusion of DSM-IV A1 qualifying events, such as life-threatening illnesses.

Conclusions: Nearly one-half of a general community sample had experienced a traumatic event and of these around one in seven was a DSM-IV case of PTSD. Although the majority of research has concentrated on combat, rape and assaultive violence, life threatening illness is a more common cause of PTSD in the community. Removal of this traumatic event in DSM-5 could reduce the number of cases of PTSD by around 6.0%.

Keywords: Epidemiology; post-traumatic stress disorder; trauma; traumatic event.

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