Table 1. Baseline characteristics of study participants (n = 3,711).
| Baseline characteristics | Median* or Percentage | Association with eGFR† | |
| β coefficient | P value | ||
| Age, years | 56 (49−64) | −0.810 | <0.001 |
| Women, n (%) | 2,123, 57.2 | −8.156 | <0.001 |
| Mongolian, n (%) | 752, 20.3 | 1.226 | 0.001 |
| Systolic blood pressure, mmHg | 160 (146−178) | −0.010 | 0.269 |
| Diastolic blood pressure, mmHg | 95 (89−103) | −0.072 | <0.001 |
| Pulse rate, beats/min | 75 (69−82) | 0.016 | 0.284 |
| Body mass index, kg/m2 | 23.74 (22.03−25.95) | 0.059 | 0.237 |
| Current smoking, n (%) | 1,443, 38.9 | 0.271 | 0.491 |
| Alcohol drinking, n (%) | 1021, 27.5 | 1.376 | 0.003 |
| Diabetes mellitus, n (%) | 426, 11.5 | −0.898 | 0.076 |
| Serum uric acid, µmol/L | 256.4 (212.2−307.0) | −0.054 | <0.001 |
| Total cholesterol, mmol/L | 5.18 (4.54−5.84) | −0.017 | 0.935 |
| HDL-C, mmol/L | 1.39 (1.19−1.60) | 0.298 | 0.657 |
| Antihypertensive medication, n (%) | 1,446, 39.0 | −0.087 | 0.798 |
| Lipid-lowering drug use, n (%) | 101, 2.7 | −0.024 | 0.981 |
| Serum creatinine, µmol/L | 73.9 (66.8−82.2) | - | - |
| eGFR, ml/min/1.73 m2 | 87.6 (78.2−97.0) | - | - |
| <60, n (%) | 119, 3.2 | - | - |
| 60–90, n (%) | 1,967, 53.0 | - | - |
| ≥90, n (%) | 1,625, 43.8 | - | - |
*With 25th and 75th percentiles.
†
β coefficients and P values estimated with linear regression model adjusted for all other characteristics.
HDL-C, high-density lipoprotein cholesterol; eGFR, estimated glomerular filtration rate.