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| Item | Ex-smokers | Smokers | Never-smokers |
| No. of subjects | 4023 | 9476 | 3143 |
| Age (year) | 48.6* (5.9) | 47.0 (5.9) | 47.7 (6.3) |
| Serum uric acid (mg/dL) | 6.18* (1.36) | 5.98 (1.32) | 6.10 (1.32) |
| Body weight (kg) | 67.3* (8.9) | 65.8 (9.8) | 66.7 (9.4) |
| Alcohol intake (d/wk) | 3.6* (2.3) | 3.4 (2.3) | 2.9 (2.4) |
| BMI (kg/m2) | 23.9* (2.7) | 23.3 (3.1) | 23.8 (3.0) |
Mean (standard deviation)
* : P < 0.001 (compared to smokers)
BMI : body mass index
