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Table 6 Discrimination and reclassification for 1-year all-cause mortality with the addition of PNI to traditional prognostic assessment tools

From: The prognostic nutritional index predicts all-cause mortality in critically ill patients with acute myocardial infarction

 

C-statistic (95%CI)

p-value

Continuous NRI (95%CI)

p-value

IDI (95%CI)

p-value

SOFA

0.770 (0.736–0.805)

Ref

 

Ref

 

Ref

SOFA + PNI

0.805 (0.781–0.827)

< 0.001

0.573 (0.432–0.713)

< 0.001

0.041 (0.026–0.057)

< 0.001

CCI

0.669 (0.630–0.708)

Ref

 

Ref

 

Ref

CCI + PNI

0.752 (0.726–0.776)

< 0.001

0.698 (0.560–0.836)

< 0.001

0.073 (0.055–0.091)

< 0.001

  1. AUC: the area under the curve; NRI: net reclassification improvement; IDI: integrated discrimination improvement; SOFA: sequential organ failure assessment score; CCI: charlson comorbidity index; PNI: prognostic nutritional index