Fig. 3From: Combined utility of Ki-67 index and tumor grade to stratify patients with pancreatic ductal adenocarcinoma who underwent upfront surgeryKaplan-Meier diagrams showing over survival for tumor grade with 2 categories (A), G-Ki67 with 4 categories (B), and G-Ki67 with 3 categories (C). P-values for the log-rank test are shown in each panelBack to article page