Table 2 Prediction of performance in the training cohort for the TNM, Limited, and full models

AIC

64,611

64,233

64,135

64,135

64,178

R², %

7.5

10.9

11.6

11.4

11.3

Model performance compared with the TNM stage

NRI

0.201

(0.005, 0.183)

IDI

0.045

(0.001, 0.041)

Model performance compared with the limited model

NRI

0.001

(− 0.046, 0.078)

0.158

(0.034, 0.185)

0.005

(− 0.028, 0.043)

IDI

0.001

(0.000, 0.002)

0.005

(0.001, 0.008)

0.000

(− 0.002, 0.002)

Model performance compared with the LNR model

NRI

0.037

(− 0.060, 0.109)

−0.040

(− 0.062, 0.000)

IDI

−0.001

(− 0.005, 0.003)

−0.006

(− 0.010, − 0.001)