Fig. 2

Restricted cubic spline analysis of WWI for the estimation of the risk of NAFLD; A all population; B women; C men. Restricted cubic spline model adjusted for sex, age, height, BMI, drinking status, smoking status, exercise habits, ALT, AST, GGT, HDL-C, TC, TG, FPG, HbA1c and DBP. Note: Sex itself is not adjusted in the analysis based on gender stratification. NAFLD: non-alcoholic fatty liver disease; WWI: weight-adjusted waist index