Figure 2.

Receiver operating characteristics curves of RPR, RDW, platelet, SOFA, SAPS II score, NLR, and PLR for predicting in-hospital mortality in critically ill patients with acute kidney injury. The predictive ability of PRR for in-hospital mortality outperformed other indices, including RDW, platelet, SOFA score, SAPS II score, NLR, and PLR by comparing the area under the curve. RPR: red cell distribution width to platelet ratio; RDW: red cell distribution width; SOFA: sequential organ failure assessment; SAPS II: simplified acute physiology score II; NLR: neutrophil to lymphocyte ratio; PLR: platelet to lymphocyte ratio.