Fig. 3

Validation of the new scoring system. Note: With the patients’ data in the validation group, the four independent risk factors found in the test group were combined to predict the postoperative complications, which indicated the importance of these four parameters (AUC = 0.778; a). With the planned scoring strategy in Table 4, the new scoring system retained its power in predicting the postoperative complications of open hepatectomy (AUC = 0.717; b)