Hidalgo R B, Davidson J R
Department of Psychiatry and Behavioral Sciences, Duke University, Durham, NC, USA.
J Clin Psychiatry. 2000;61 Suppl 7:5-13.
Epidemiologic studies show that prevalence of trauma and posttraumatic stress disorder (PTSD) is substantial in modern society. Most people will experience a traumatic event at some point in their life, and up to 25% of them will develop the disorder. Demographic and socioeconomic factors also play a role in the risk for exposure to traumatic experiences and subsequent PTSD. Psychiatric history, both personal or in family members, increases the likelihood of being exposed to trauma and of developing PTSD once exposed. Traumatic exposure and PTSD have an impact on the individual's health, health care service utilization, and general functioning. Such effects provoke a considerable economic burden not only for those persons experiencing trauma and PTSD, but also for the health care system and society as a whole.
流行病学研究表明，创伤和创伤后应激障碍（PTSD）在现代社会中的患病率相当高。大多数人在其生命中的某个时刻会经历一次创伤性事件，其中高达25%的人会患上这种疾病。人口统计学和社会经济因素在遭受创伤性经历及随后发生PTSD的风险中也起作用。个人或家庭成员的精神病史会增加遭受创伤的可能性，以及一旦暴露于创伤后患上PTSD的可能性。创伤暴露和PTSD会对个人的健康、医疗服务利用和总体功能产生影响。这些影响不仅给经历创伤和PTSD的人带来相当大的经济负担，也给医疗保健系统乃至整个社会带来负担。
