Table 1.
Baseline characteristics and clinical data of study population.
| Characteristics | low-salt-intake (n = 273) |
med-salt-intake (n = 271) |
high-salt-intake (n = 276) |
P value |
|---|---|---|---|---|
| Male gender | 190 (69.6) | 137 (50.6) | 130 (47.1) | <0.001 |
| Age, yr | 38.78 ± 14.00 | 35.88 ± 11.51 | 37.07 ± 11.97 | 0.029 |
| Body mass intake (kg/m2) | 24.93 ± 4.22 | 25.10 ± 4.56 | 26.43 ± 4.25 | <0.001 |
| Waist circumference (cm) | 80.60 ± 11.44 | 82.04 ± 11.93 | 85.15 ± 12.45 | <0.001 |
| Current smoker | 25 (9.4) | 29 (11.3) | 22 (8.5) | 0.156 |
| History of hypertension | 23 (8.4) | 17 (6.3) | 34 (12.3) | 0.060 |
| Systolic PB, mmHg | 106.71 ± 12.82 | 105.83 ± 12.56 | 107.45 ± 13.67 | 0.351 |
| Diastolic BP, mmHg | 71.23 ± 9.36 | 70.54 ± 9.55 | 72.34 ± 10.68 | 0.101 |
| Serum BUN level | 15.31 ± 3.37 | 15.21 ± 3.55 | 15.12 ± 3.73 | 0.812 |
| Serum creatinine level | 0.94 ± 0.17 | 0.98 ± 0.23 | 0.98 ± 0.21 | 0.052 |
| Serum sodium level | 138.96 ± 3.12 | 139.11 ± 3.22 | 139.25 ± 3.23 | 0.551 |
| Urine creatinine level | 119.24 ± 46.61 | 133.82 ± 44.21 | 145.66 ± 49.54 | <0.001 |
| Urine albumin | 43.07 ± 37.48 | 46.55 ± 38.18 | 53.56 ± 47.60 | 0.011 |