Table 1. Baseline Characteristics, Serum and Urinary Biochemical Profiles of Patients Stratified according to Tertiles of 12-h Urinary Sodium Excretion .
| All | Urinary Sodium | ||||||||
| 1 (< 87.442 mEq/L) | 2 (87.442 – 145.441 mEq/L) | 3 (>145.441 mEq/L) | |||||||
| 185 | 61 | 63 | 61 | p* | |||||
| Mean | SD | Mean | SD | Mean | SD | Mean | SD | ||
| Age (yr) | 56.01 | 4.99 | 55.49 | 4.15 | 56.08 | 5.83 | 56.08 | 5.83 | 0.561 |
| Weight (kg) | 72.60 | 13.01 | 72.45 | 12.84 | 71.70 | 12.02 | 14.25 | 0.700 | |
| Menarche (yr) | 13.97 | 1.47 | 14.11 | 1.52 | 13.81 | 1.53 | 13.98 | 1.37 | 0.513 |
| Menopause(yr) | 48.49 | 5.45 | 48.87 | 4.01 | 48.67 | 4.50 | 47.92 | 7.31 | 0.594 |
| Calcium (mg) | 744.27 | 235.25 | 779.16 | 265.517 | 723.94 | 206.08 | 730.38 | 231.24 | 0.365 |
| Sodium (mg) | 3566.92 | 925.61 | 3605.31 | 984.91 | 3513.65 | 887.02 | 3583.56 | 916.27 | 0.848 |
| Potassium (mg) | 2511.29 | 693.55 | 2613.16 | 692.62 | 2428.44 | 611.36 | 2494.98 | 768.84 | .327 |
| Serum | |||||||||
| 1,25(OH) 2 D 3 (ng/ml) | 30.93 | 1.86 | 35.48 | 1.94 | 30.90 | 1.96 | 27.54 | 1.94 | 0.112 |
| PTH (mg/mL) | 23.98 | 1.91 | 26.00 | 1.89 | 21.13 | 2.04 | 25.11 | 1.77 | 0.167 |
| Urine | |||||||||
| Calcium (mg/dl) | 5.88 | 1.51 | 5.01** | 1.51 | 5.75 ** | 1.44 | 6.91 | 1.51 | 0.002 |
| Phosphorous (mg/dl) | 50.11 | 1.58 | 44.66♯ | 1.65 | 50.11♯ | 1.47 | 54.95 | 1.54 | 0.045 |
| Potassium (mEq/L) | 35.70 | 2.18 | 33.11 | 2.81 | 66.06 ǂ | 1.65 | 70.79 ǂ | 1.54 | 0.006 |
| ORAI (%) | 0.935 | ||||||||
| <9 point | 60.52 | 32.10 | 33.94 | 33.96 | |||||
| ≥9 point | 39.53 | 34.21 | 34.27 | 31.52 | |||||
| Usage of estrogen (%) | 2.7 | 8.2 | 0 | 8.2 | 0.653 | ||||
*Using ANOVA and Post Hoc (Tukey HSD) for quantitative variables and chi square for Qualitative variables
**Significantly different compared to the third tertile (p<0.021)
♯Significantly different compared to the third tertile (p<0.042)
ǂ significantly different compared to the first tertile (p<0.034)