Fig. 4

Calibration curves of the PT-RO model (a), T-RO model (b) and PT-E (c) performed in the validation cohort. The calibration curves depict the calibration of the models in terms of agreement between the predicted risks and the observed outcomes of HCC early recurrence. The solid line represents the performance of the models, and the dotted line represents an ideal model. The closer solid line is to the dotted line, the better the calibration