TABLE 2.

C-index for DRGS risk compared with Oncotype DX.

Cohorts	DNA repair risk		Oncotype DX colon
	C-index	95% CI	C-index	95% CI
Training cohort	0.78	0.69–0.86	0.60	0.52–0.68
Validation-1 cohort	0.65	0.51–0.79	0.51	0.37–0.65
Validation-2 cohort	0.66	0.55–0.76	0.62	0.53–0.70