Fig. 1

Restricted cubic spline of the association between NRI and 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; OR, odds ratio; CI, confidence interval; PIR, family income poverty ratio