Abstract
This chapter presents an overview of recent literature on the descriptive epidemiology of trauma and posttraumatic stress disorder (PTSD). It shows that trauma exposure is pervasive in the population, that the proportion of people who develop PTSD varies substantially by type of trauma as well as by a number of characteristics of the person exposed to the trauma, and that a substantial proportion of people who develop PTSD go on to have a chronic course of illness. The population burden of PTSD based on this combination of factors was recently estimated to be 77.7 lifetime person-years per 100 people in the population. Despite this high frequency coupled with the substantial distress and impairment caused by PTSD, only a minority of people with PTSD obtain treatment. The chapter discusses a number of potential targets for prevention and early intervention to reduce the population burden of PTSD.
Published Version
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