Fig. 3.

RCS curve fit between magnesium intake and gallstones. Notes: Solid lines represent smooth curve fits between variables. Shaded bands represent 95 per cent confidence intervals from the fit. Subfigure A: no adjustment for covariates. Subfigure B: adjusted for sex, age, and race. Subfigure C: adjusted for sex, age, race, education level, marital status, PIR, BMI, hypertension, diabetes mellitus, fatty liver, smoking, alcohol consumption, TG, HDL-C, TC, ALT, AST, and GGT. Subfigure D: adjusted for sex, age, race, education level, marital status, PIR, BMI, hypertension, diabetes mellitus, fatty liver, smoking, alcohol consumption, TG, HDL-C, TC, ALT, AST, GGT, protein intake, carbohydrate intake, fat intake, water intake, calcium intake, iron intake, and zinc intake