Research Article

Predictive Significance of the Prognostic Nutritional Index (PNI) in Patients with Severe COVID-19

Figure 4

The significance of the PNI score for the prediction of mortality in patients with severe COVID-19. (a) ROC curve of PNI; (b) Cox analysis of COVID-19 patients based on the cutoff value of the PNI score; (c) correlation between the PNI score and other indicators of disease severity.
(a)
(b)
(c)