Table 3.
Association between gender, age, BMI, uric acid excretion and uric acid concentration to SUA level
| Variables | SUA* | P value | RR | 95% CI | |
| High-normal and high (%) | Normal (%) | ||||
| Gender | |||||
| Men | 237 (32.3) | 69 (9.4) | <0.001 | 2.60 | 2.22–3.05 |
| Women | 127 (17.3) | 300 (40.9) | |||
| Age (years) | |||||
| Men | |||||
| 30–39† | 52 (17.0) | 11 (3.6) | – | 1 | – |
| 40–49 | 104 (34.0) | 22 (7.2) | 1000 | 1.00 | 0.87–1.15 |
| 50–59 | 81 (26.5) | 36 (11.8) | 0.053 | 0.84 | 0.71–0.99 |
| Women | |||||
| 30–39† | 22 (5.2) | 85 (19.9) | – | 1 | – |
| 40–49 | 40 (9.4) | 128 (30.0) | 0.530 | 1.16 | 0.73– 1.84 |
| 50–59 | 65 (15.2) | 87 (20.4) | <0.001 | 2.08 | 1.37–3.15 |
| BMI‡ | |||||
| Overweight–obese | 171 (23.3) | 154 (21.0) | 0.153 | 1.13 | 0.96–1.32 |
| Underweight–normal | 193 (26.3) | 215 (29.3) | |||
| Uric acid excretion (24 hours)§ | |||||
| High | 169 (23.1) | 130 (17.7) | 0.002 | 1.32 | 1.10–1.57 |
| Normal | 195 (26.6) | 239 (32.6) | |||
| Uric acid concentration¶ | |||||
| Normal | 200 (27.3) | 202 (27.5) | 0.956 | 1.00 | 087–1.16 |
| High | 164 (22.4) | 167 (22.8) | |||
*SUA, normal: <5 mg/dL, high-normal: 5–7 mg/dL, high: ≥7 mg/dL.
†Reference category.
‡BMI, underweight: <18.5 kg/m2, normal: 18.5–24.9 kg/m2, overweight: 25–29.9 kg/m2, obese: >30 kg/m2.
§Uric acid excretion, normal: <435.08 mg/day, high: ≥435.08 mg/day.
¶Uric acid concentration (mg per 100 mL of urine), normal: <46.63 mg%, high: ≥46.63 mg%.
BMI, body mass index; SUA, serum uric acid.