Fig. 4

Kaplan–Meier graph showing correlation between plasma levels of Presepsin and survival in septic critically ill patients (a, b) and in critically ill patients with pneumonia (c, d). Survival curves according to the quartile of Presepsin (a) and to the cutoff of Presepsin (b) in septic critically ill patients, and in patients with pneumonia [according to the quartile of Presepsin (c) and to the cutoff of Presepsin (d)]. p values are given in each figure