The effect of LgTBiL on PAD showed no significant difference in the following subgroups: age (<60 vs. ≥60 years), BMI (<24 vs. ≥24 kg/m2), current smoking (no vs. yes), current drinking (no vs. yes), eGFR (˂ 60 vs. ≥60 ml/min/1.73 m2), and diabetes mellitus (no vs. yes) in both groups (all P for interactions >0.05) after adjustment for sex, age, BMI, SBP, DBP; smoking status, drinking status, diabetes mellitus, stroke, CHD, Hcy, FPG, TG, LDL-C, AST, ALT, eGFR, antihypertensive drugs, glucose-lowering drugs, lipid-lowering drugs except for the stratifying variable. Here, GPT is linked to diabetes mellitus.