Comparative Recurrence Analysis of Pancreatic Adenocarcinoma after Resection

Table 5

Comparison of the C-index and AUC values between predictive systems and TNM stage.

System	Head										Body/tail
	OS					PFS					OS					PFS
	C-index	AUC				C-index	AUC				C-index	AUC				C-index	AUC
		1-year	2-year	3-year			1-year	2-year	3-year			1-year	2-year	3-year			1-year	2-year	3-year
Predictive system	0.688 (0.623–0.753)	0.720	0.734	0.801	0.004	0.800 (0.760–0.840)	0.749	0.749	0.748	0.001	0.751 (0.611–0.891)	0.684	0.688	0.672	0.050	0.802 (0.736–0.868)	0.848	0.740	0.741	0.001
8th TNM stage	0.600 (0.536–0.664)	0.598	0.580	0.601		0.616 (0.565–0.667)	0.612	0.650	0.619		0.633 (0.500–0.768)	0.538	0.548	0.520		0.671 (0.571–0.771)	0.572	0.540	0.597

C-index, concordance index; AUC, area under receiver operating characteristic curves.