Table 1.
Baseline characteristics of the study population by quartiles of serum uric acid.
| Quartiles of Serum Uric Acid (mg/dL) | |||||
|---|---|---|---|---|---|
| Variable | Quartile 1 | Quartile 2 | Quartile 3 | Quartile 4 | P Value |
| No. of subjects | 1010 | 1108 | 997 | 1015 | |
| Age (years, mean ± SD) | 40.7 ± 15.1 | 40.8 ± 15.6 | 42.3 ± 16.6 | 43.1 ± 16.3 | 0.001 |
| BMI (kg/m2, mean ± SD) | 22.2 ± 3.0 | 22.9 ± 3.5 | 23.5 ± 3.5 | 25.0 ± 4.2 | <0.001 |
| WC (cm, mean ± SD) | 76.3 ± 9.8 | 78.0 ± 11.1 | 79.4 ± 10.8 | 83.1 ± 11.6 | <0.001 |
| Blood pressure (mmHg, mean ± SD) | |||||
| Systolic | 111.1 ± 15.8 | 112.6 ± 16.3 | 114.2 ± 16.7 | 118.8 ± 18.6 | <0.001 |
| Diastolic | 72.2 ± 10.2 | 73.6 ± 11.0 | 74.3 ± 10.6 | 77.6 ± 11.6 | <0.001 |
| FPG (mg/dL, mean ± SD) | 87.4 ± 9.2 | 88.3 ± 9.1 | 88.8 ± 9.4 | 90.2 ± 9.9 | <0.001 |
| Lipids (mg/dL, mean ± SD) | |||||
| Total cholesterol | 174.1 ± 34.1 | 179.2 ± 32.8 | 184.4 ± 37.6 | 191.8 ± 36.5 | <0.001 |
| HDL-C | 56.6 ± 14.4 | 55.8 ± 13.8 | 55.8 ± 15.1 | 54.5 ± 15.6 | 0.02 |
| LDL-C | 108.3 ± 24.9 | 113.0 ± 25.3 | 115.8 ± 27.1 | 121.7 ± 28.3 | <0.001 |
| Triglycerides | 99.8 ± 53.8 | 111.5 ± 65.7 | 126.9 ± 81.5 | 147.6 ± 91.2 | <0.001 |
| Cigarette smoking (No., %) | 209 (21.7) | 233 (21.8) | 179 (18.8) | 200 (20.5) | 0.334 |
| Alcohol intake (No., %) | 239 (23.7) | 268 (24.3) | 243 (24.5) | 247 (24.4) | 0.979 |
| Regular exercise (No., %) | 523 (52.0) | 573 (51.9) | 562 (56.6) | 549 (54.2) | 0.105 |
BMI = body mass index; WC = waist circumference; FPG = fasting plasma glucose; HDL-C = high-density lipoprotein cholesterol; LDL-C = low-density lipoprotein cholesterol.