Fig. 1.

ROC curves of the age-LDH-CD4 model and single index in the training set (a) and the prospective validation set (b). The AUROC of age-LDH-CD4 model was significantly higher than that of CD4 count, LDH, and age. In the training set, the AUROC of age-LDH-CD4 model was significantly higher than that of CD4 (p = 0.005), LDH (p = 0.025), and age (p < 0.001). In the prospective validation set, the AUROC of age-LDH-CD4 model was also significantly higher than that of CD4 (p = 0.021), LDH (p = 0.027), and age (p = 0.028)