Incidence and risk factors of post-traumatic stress disorder in patients after endoscopic submucosal dissection for early gastric cancer

Table 5 Receiver operating characteristic curve analysis results of the post-traumatic stress disorder prediction model and individual factors

Predictive factor	AUC	95%CI	Sensitivity (%)	Specificity (%)	Youden index	Cut-off value1
Combined prediction model	0.856	0.801-0.910	78.6	85	0.636	Predicted probability ≥ 0.31
Age	0.617	0.531-0.703	64.3	60.6	0.249	62 years
Marital status	0.594	0.512-0.676	25	88.8	0.138	Unmarried/divorced/widowed
Lesion size	0.652	0.571-0.733	58.9	68.8	0.277	2.0 cm
Combined with ulcer	0.582	0.500-0.664	46.4	70	0.164	Yes
Preoperative SDS score	0.681	0.602-0.759	62.5	70	0.325	50 points
Preoperative SSRS score	0.745	0.674-0.816	71.4	71.3	0.427	35 points

¹Cut-off value for the combined prediction model determined based on maximum Youden index principle.

AUC: Area under the curve; CI: Confidence interval; SDS: Self-Rating Depression Scale; SSRS: Social Support Rating Scale.