Fig. 3

ROC curve depicting the relationship between BMI and IVC resection. a ROC curve of the relationship between BMI and the IVC resection in Mayo level I–IV patients. AUC = 0.70. The best cutoff value was 22.2 kg/m2, which achieved a sensitivity of 77.3% and a specificity of 54.8%. b ROC curve of the relationship between BMI and the IVC resection in Mayo level II–IV patients. AUC = 0.71. The best cutoff value was 22.4 kg/m2, which achieved a sensitivity of 77.8% and a specificity of 54.2%