Fig. 1

Association of combined baseline SUA and SUA changes with incident metabolic syndrome in the CHARLS. Ab BMI, body mass index; BP, blood pressure; CI, confidence interval; CHARLS, China Health and Retirement Longitudinal Study; eGFR, estimated glomerular filtration rate; FBG, fasting blood glucose; HDL-C, high-density lipoprotein cholesterol; OR, odd ratio; SUA, serum uric acid; TG, triglycerides; WC, waist circumference. *Adjusted for baseline age (continuous, years), gender (men and women), residence (urban and rural), education level (illiterate, primary school, middle school or above), marital status (married and unmarried), cigarette smoking (never, former, and current), alcohol drinking (never, former, and current), WC (continuous, cm), BMI (continuous, kg/m²), systolic BP (continuous, mmHg), FBG (continuous, mg/dL), TG (continuous, mg/dL), and HDL-C (continuous, mg/dL), and eGFR (continuous, mL/min/1.73 m²). **Baseline SUA levels and absolute SUA changes during the follow-up were dichotomized based on the median values (4.1 mg/dL and 0.5 mg/dL, respectively)