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Clinical and Translational Medicine

Table 4 A comparison of discriminatory ability of SAA, EBV DNA and SAA + EBV DNA with TNM stage using NRI and IDIa

From: The prognostic value of integration of pretreatment serum amyloid A (SAA)–EBV DNA (S-D) grade in patients with nasopharyngeal carcinoma

 

1-Year

3-Year

5-Year

NRI

P

IDI

P

NRI

P

IDI

P

NRI

P

IDI

P

SAA vs TNM stage

− 4.8%

0.641

− 0.1%

0.827

− 3.3%

0.689

− 1.4%

0.635

− 17.2%

0.515

− 3.5%

0.549

EBV DNA vs TNM stage

− 15.6%

0.482

− 0.4%

0.541

− 5.3%

0.549

− 0.8%

0.723

− 12.5%

0.615

− 1.4%

0.771

S-D grade vs TNM stage

12.4%

0.472

0.4%

0.589

9.6%

0.348

1.8%

0.571

11.6%

0.537

3.8%

0.470

  1. NRI or IDI > 0, it was positive improvement, this indicated that the new model had better prediction ability than the old model. If NRI or IDI < 0, it was negative improvement, and the new model’s prediction ability was less than the old model. If NRI or IDI = 0, it was considered the new model had not changed
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