Table 6 The comparisons among different models for predicting the ICU requirement

ROC

Sensitivity

0.597

0.544

0.717

0.690

Specificity

0.752

0.855

0.726

0.726

Youden index

0.349

0.399

0.443

0.416

AUC

0.728

0.724

0.750

0.749

DeLong's test

/

 < 0.001

 < 0.001

 < 0.001

NRI

Estimate

0.061

0.110

0.126

95%CI

[− 0.01, 0.145]

[0.023, 0.205

[0.034, 0.226]

Improvement

6.1%

11.0%

12.6%