Fig. 3
From: Preoperative predictors for early recurrence of resectable pancreatic cancer
Survival curve of three groups stratified for preoperative serum CA19-9 level. The median OS in group A did not reach the median time, the median OS in group B was 40.5Â months, and the median OS in group C was 23.1Â months. The survival times were not statistically significantly different between the three groups, but stratified Kaplan-Meier curves could be drawn for these divided groups