Fig. 1

RCS results of AIP index and the risk of kidney stones (a no covariates adjusted; b adjusted for age, gender, race, annual household income, education level, physical activity, smokers, diabetes, hypertension, cardiovascular disease, BMI, ALT, AST, GGT, glycohemoglobin, FPG, TC, LDL, Scr, SUA, and eGFR)