Numerous studies have established the frequent occurrence of posttraumatic stress disorder
(PTSD) among individuals exposed to traumas including wars, disasters, terrorist attacks,
road traffic accidents, and interpersonal violence. 1–5 The estimated lifetime prevalence of
PTSD in the US population is about 10%. 6, 7 Lower prevalence rates are found in Europe,
along with a lower frequency of trauma exposure. 8, 9 The conditional probability of
developing PTSD is more stable across continents but varies between types of traumatic …