Table 4.

C-Index Indicating Discrimination Accuracy of Estimates of Metastatic Risk

	Years After Treatment
	2	5	10
LBTD and C3S, C-index (95% CI)
Known	0.85 (0.82, 0.88)	0.85 (0.82, 0.87)	0.84 (0.80, 0.86)
Unknown	0.79 (0.76, 0.82)	0.77 (0.75, 0.78)	0.74 (0.73, 0.76)
TNM, C-index (95% CI)	0.81 (0.78, 0.85)	0.79 (0.77, 0.81)	0.76 (0.75, 0.79)