Figure 3. Association of RBP4 with the severity of CAD. (A) Serum RBP4 level increases as the number of affected vessels increases. The analysis was adjusted for age, sex, BMI, smoking, hypertension, diabetes, TC, TG, LDL-C, HDL-C, ApoA, TSH, T3, FBG, UA and Cr. The P value for test for trend of the changes of serum RBP4 concentrations across the severity of coronary angiography is given. *, P < 0.01 vs. Control; **, P < 0.001 vs. Control. (B) Spearman correlation coefficient was used to analyze the correlation between serum RBP4 levels and Gensini scores.