Risk factors of PTSD symptoms by logistic regression.

*PTSD symptoms: PCL-C score of 17 items ≥38.Abbreviations: CI, confidence interval; OR, odds ratio; PTSD, posttraumatic stress disorder.–Variable was not retained in backward stepwise regression procedure.*创伤后应激障碍（posttraumatic stress disorder）症状判定标准：17条目PCL-C量表得分≥38分。缩写说明：CI为置信区间（confidence interval）；OR为优势比（odds ratio）；PTSD为创伤后应激障碍（posttraumatic stress disorder）。——该变量未在向后逐步回归流程中被保留。