Fig. 2From: Comparison of surgical and oncologic outcomes in very elderly patients (≥ 80 years old) and elderly (65–79 years old) colorectal cancer patients: a propensity score matchingThe Kaplan–Meier curve before and after PSM for OS and DFS. a OS before PSM; b DFS before PSM; c OS after PSM; d DFS after PSM. Note: PSM, propensity score matching; OS, overall survival; DFS, disease-free survivalBack to article page