Fig. 2From: 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 Ki-67 index with cut-off points as 20% (A), 30% (B), and 40% (C). P-values for the log-rank test are shown in each panelBack to article page