Receiver operator characteristic (ROC) curve of factors for predicting insulin resistance (IR), prediabetes and type 2 diabetes mellitus (T2DM) in non-nonalcoholic fatty liver disease (NAFLD), NAFLD and subgroup NAFLD defined by magnetic resonance imaging proton density fat fraction (MRI-PDFF) groups. (A, B, C) ROC curve for predicting IR, prediabetes and T2DM in patients with non-NAFLD, (D, E, F) ROC curve for predicting IR, prediabetes and T2DM in NAFLD individuals, (G, H, I) ROC curve for predicting IR, prediabetes and T2DM in the subgroup of NAFLD defined by MRI-PDFF. FFA, free fatty acid; AUC, area under curve; BMI, body mass index; WC, waist circumference; UA, uric acid; HOMA-IR, homeostasis model assessment of insulin resistance; LDL-C, low-density lipoprotein cholesterol; HDL-C, high-density lipoprotein cholesterol; LFC, liver fat content.