Table 3.

The net reclassification improvement and integrated discrimination improvement of the nomogram

Category	NRI (95% CI)	P	IDI (95% CI)	P
Training group
1-year OS	0.471 (0.337–0.555)	< 0.01	0.132 (0.103–0.177)	< 0.01
2-year OS	0.377 (0.271–0.463)	< 0.01	0.165 (0.127–0.219)	< 0.01
3-year OS	0.375 (0.293–0.453)	< 0.01	0.162 (0.127–0.209)	< 0.01
Testing group
1-year OS	0.421 (0.299–0.581)	< 0.01	0.139 (0.101–0.217)	< 0.01
2-year OS	0.382 (0.273–0.498)	< 0.01	0.177 (0.129–0.244)	< 0.01
3-year OS	0.297 (0.206–0.395)	< 0.01	0.180 (0.126–0.259)	< 0.01

CI confidence interval, IDI integrated discrimination improvement, NRI net reclassification improvement, OS overall survival