Figure 3. Kaplan–Meier curves for the training and validation sets. (A and B) Kaplan–Meier curves for the training and validation sets created using the new classification system. (C and D) Kaplan–Meier curves for the training and validation sets created using Cheng’s portal vein staging system. (E and F) Kaplan-Meier curves for the training and validation sets created using the HKLC system.