Table 3.

NRI and IDI to evaluate the predictive power of the model.

Index	Training cohort		P value	Validation cohort		P value
	Value	95%CI		Value	95%CI
NRI
3-year CSS	0.69	0.65-0.82		0.71	0.60-0.84
6-year CSS	0.70	0.62-0.77		0.72	0.60-0.82
9-year CSS	0.66	0.57-0.74		0.68	0.57-0.84
IDI
3-year CSS	0.12	0.09-0.14	<0.001	0.11	0.07-0.14	<0.001
6-year CSS	0.14	0.12-0.17	<0.001	0.13	0.10-0.16	<0.001
9-year CSS	0.16	0.12-0.19	<0.001	0.15	0.10-0.21	<0.001