Fig. 4

Receiver operating characteristic curves of NRI in diagnosing NAFLD and liver fibrosis. A NAFLD. B Liver fibrosis. The model accounted for age, sex, ethnicity, education level, PIR, smoking status, diabetes, and hypertension. NRI, nutritional risk index; NAFLD, non-alcoholic fatty liver disease; ROC, receiver operating characteristic; AUC, area under the ROC curve; PIR, family income poverty ratio