Fig. 1

ROC curves of NAFLD in different subgroups. a ROC curve in the estimation group of males, the AUC is 0.87 (95%CI: 0.83–0.92) (n = 226). b ROC curve in the estimation group of females, the AUC is 0.91 (95%CI: 0.87–0.96) (n = 210). c ROC curve in the validation group of males, the AUC is 0.86 (95%CI: 0.82–0.91) (n = 226). d ROC curve in the validation group of females, the AUC is 0.82 (95%CI: 0.76–0.88) (n = 211)