Figure 1.
Kaplan-Meier survival curves according to quartiles of RDW in patients with PAD (P < 0.0001 by log-rank test for overall comparison among groups). Quartile 1: RDW < 12.8%; Quartile 2 : RDW 12.8% - 13.5%; Quartile 3 : RDW 13.5% - 14.5%; Quartile 4 : RDW >14.5%.