Statistical Analysis
PTSD, trauma
According to the literature, the incidence of PTSD among patients with trauma 1 month postoperatively was 23.2%.The outcome analyses were performed in the modified intention-to-treat population. The data were analyzed using SPSS statistical software, version 23.0 (IBM Inc). The Kolmogorov-Smirnov test was used to determine whether the continuous data conformed to the normal distribution. Continuous variables were presented as the means (SDs) or medians (IQRs). The continuous data with normal distribution were compared with the independent-sample, 2-tailed, unpaired 