TABLE 3.

Comprehensive comparison of the accuracy and discrimination in five models.

Index	Model 1 vs. Model 2	Model 1 vs. Model 3	Model 1 vs. Model 4	Model 1 vs. Model 5	Model4 vs. Model 5
IDI (1 year)	−0.037 (p = 0.274)	−0.063 (p = 0.02)	0.084 (p = 0.002)	0.108 (p < 0.001)	0.025 (p = 0.186)
Continuous NRI (1 year)	−0.598 (p = 0.010)	−0.663 (p < 0.001)	0.458 (p = 0.016)	0.708 (p < 0.001)	0.422 (p = 0.032)
IDI (3 year)	−0.146 (p = 0.040)	−0.178 (p = 0.006)	0.165 (p = 0.014)	0.214 (p < 0.001)	0.049 (p = 0.102)
Continuous NRI (3 year)	−0.548 (p = 0.022)	−0.508 (p < 0.001)	0.317 (p = 0.028)	0.433 (p < 0.001)	0.508 (p = 0.032)
IDI (5 year)	−0.189 (p = 0.044)	−0.211 (p = 0.056)	0.122 (p = 0.158)	0.177 (p = 0.018)	0.055 (p = 0.292)
Continuous NRI (5 year)	−0.530 (p = 0.078)	−0.366 (p = 0.058)	0.157 (p = 0.274)	0.410 (p = 0.036)	0.398 (p = 0.106)

Model 1: only the SI−risk signature was enrolled in the prognostic factor; Model 2: mRNAsi was enrolled in the prognostic factor; Model 3: corrected mRNAsi was enrolled in the prognostic factor; Model 4: age, gender, grade, radiation therapy, chemotherapy, and IDH status were enrolled in the prognostic factors; Model 5: age, gender, grade, radiation therapy, chemotherapy, IDH status, and risk group were enrolled in the prognostic factors. NRI, net reclassification improvement; IDI, integrated discrimination improvement.