Incidence and influencing factors of post-traumatic stress symptoms in patients after surgery for acute intestinal obstruction

Figure 3 Receiver operating characteristic curve for post-traumatic stress symptoms prediction model in postoperative patients with acute intestinal obstruction. Receiver operating characteristic curve illustrating the discriminatory performance of the multivariate logistic regression–based prediction model. The model achieved an area under the curve (AUC) of 0.782 [95% confidence interval (CI): 0.728-0.836], indicating moderate-to-good predictive ability. The optimal cutoff point (diamond marker), determined by maximizing the Youden index, yielded a sensitivity of 74.2% and a specificity of 75.7%. The dashed diagonal line represents the reference line (AUC = 0.500). AUC: Area under the curve; ROC: Receiver operating characteristic; CI: Confidence interval.