BACKGROUND Several studies indicate that older age is a risk factor for probable post-traumatic stress disorder (PTSD). However, evidence on the prevalence and risk factors for elderly disaster survivors is limited. METHODS Multi-stage stratified sampling was applied in this cross-sectional study. The Revised Version of the Impact of Event Scale (IES-R) was used to evaluate symptoms of PTSD. Chi-squared test was used for univariable analysis of prevalence of probable PTSD by possible determinants. Multivariable logistic regression analysis was utilized to further explore risk factors for PTSD. RESULTS 427 elderly survivors age 60 or older participated. The prevalence of probable PTSD was 40.5, 36.3, and 21.5% according to a cut off score of the IES-R of 33, 35, and 2 points on average across items, respectively. In multivariable logistic regression, elderly survivors with a higher number of diagnosed chronic illnesses were more likely to be screened positive for PTSD and those with a greater number of family members living in the same home were less likely to be classified as having probable PTSD for all cut off scores. Elderly survivors with improved economic status and those with primary school or lower education were more often estimated to have probable PTSD with a cut off score of 35 and 2 points on average. CONCLUSIONS Elderly survivors in a high impact area following a major earthquake are at high risk for developing PTSD. Those who live alone and report pre-existing chronic illness are particularly vulnerable.

中文翻译：

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2008年汶川地震发生六个月后，老年幸存者的创伤后应激障碍患病率和危险因素。

背景技术一些研究表明，老年是可能的创伤后应激障碍（PTSD）的危险因素。但是，关于老年灾难幸存者的患病率和危险因素的证据有限。方法在这一横断面研究中采用了多阶段分层抽样。事件量表影响的修订版（IES-R）用于评估PTSD的症状。卡方检验用于通过可能的决定因素对可能的PTSD的患病率进行单变量分析。多变量logistic回归分析用于进一步探讨PTSD的危险因素。结果427名60岁或以上的老年幸存者参加了研究。根据IES-R在各个项目上的平均得分分别为33、35和2分，可能的PTSD患病率分别为40.5、36.3和21.5％。在多因素Logistic回归分析中，被诊断出患有慢性疾病的老年幸存者更有可能被筛查为PTSD阳性，而有更多家庭成员居住在同一家中的人则不太可能被归类为所有人都有PTSD砍掉分数。经济状况得到改善的老年幸存者和小学或较低文化程度的幸存者被估计患有PTSD的可能性更高，平均得分为35分和2分。结论大地震后高影响区的老年人幸存者罹患PTSD的风险很高。那些独自生活并报告已有慢性疾病的人特别容易受到伤害。确诊为慢性疾病的老年幸存者更有可能被筛查为PTSD阳性，而有更多家庭成员住在同一家中的那些幸存者则不太可能被归类为所有截断分数均属于PTSD。经济状况得到改善的老年幸存者和小学或较低文化程度的幸存者被估计患有PTSD的可能性更高，平均得分为35分和2分。结论大地震后高影响区的老年人幸存者罹患PTSD的风险很高。那些独自生活并报告已有慢性疾病的人特别容易受到伤害。确诊为慢性疾病的老年幸存者更有可能被筛查为PTSD阳性，而有更多家庭成员住在同一家中的那些幸存者则不太可能被归类为所有截断分数均属于PTSD。经济状况得到改善的老年幸存者和小学或较低文化程度的幸存者被估计患有PTSD的可能性更高，平均得分为35分和2分。结论大地震后高影响区的老年人幸存者罹患PTSD的风险很高。那些独自生活并报告已有慢性疾病的人特别容易受到伤害。经济状况得到改善的老年幸存者和小学或较低文化程度的幸存者被估计患有PTSD的可能性更高，平均得分为35分和2分。结论大地震后高影响区的老年人幸存者罹患PTSD的风险很高。那些独自生活并报告已有慢性疾病的人特别容易受到伤害。经济状况得到改善的老年幸存者和小学或较低文化程度的幸存者被估计患有PTSD的可能性更高，平均得分为35分和2分。结论大地震后高影响区的老年人幸存者罹患PTSD的风险很高。那些独自生活并报告已有慢性疾病的人特别容易受到伤害。