Prediction performance of FLI, HSI, FSI, and ZJU index in age-stratified subgroups

IndicesAge < 50 (N = 1,655)Age ≥ 50 (N = 2,911)
AUC (95% CI)Cut-offSN (%)SP (%)AUC (95% CI)Cut-offSN (%)SP (%)
FLI0.840 (0.822–0.858)26.772.8779.810.804 (0.789–0.818)22.580.4166.98
HSI0.827 (0.808–0.845)33.075.2873.290.774 (0.758–0.789)32.972.3969.57
FSI0.843 (0.825–0.860)10.079.1273.610.806 (0.792–0.821)13.679.2967.55
ZJU index0.851 (0.833–0.868)35.073.5880.230.808 (0.793–0.822)35.0 75.2872.88

AUC: area under the receiver operating characteristic curve; 95% CI: 95% confidence interval; SN: sensitivity; SP: specificity; FLI: fatty liver index; HSI: hepatic steatosis index; FSI: Framingham Steatosis index; ZJU index: Zhejiang University index