Retrospective Cohort Study
Copyright ©The Author(s) 2019.
World J Gastrointest Surg. May 27, 2019; 11(5): 247-260
Published online May 27, 2019. doi: 10.4240/wjgs.v11.i5.247
Figure 1
Figure 1 Observed survival probabilities of patients in the three risk score categories compared against model-based predicted probabilities for each group. P value < 0.001 for separation of Kaplan-Meier survival curves (solid lines).