Table 4.
Twenty-four-hour urine composition by DASH score in younger women (NHS II)
| Component | Quintile 1 | Quintile 2 | Quintile 3 | Quintile 4 | Quintile 5 | P for Trend |
|---|---|---|---|---|---|---|
| Calcium (mg) | 196 | 207 | 212 | 200 | 219 | 0.05 |
| Oxalate (mg) | 27 | 26 | 28 | 28 | 28 | 0.03 |
| Citrate (mg) | 665 | 728 | 780 | 764 | 772 | 0.002 |
| Uric acid (mg) | 503 | 504 | 506 | 522 | 518 | 0.09 |
| Sodium (mEq) | 152 | 148 | 155 | 152 | 150 | 0.97 |
| Sulfate (mmol) | 16 | 17 | 17 | 17 | 18 | 0.01 |
| Potassium (mEq) | 48 | 52 | 56 | 59 | 64 | <0.001 |
| Magnesium (mg) | 90 | 96 | 100 | 105 | 105 | <0.001 |
| Phosphate (mg) | 832 | 834 | 835 | 853 | 857 | 0.15 |
| pH (units) | 5.9 | 6.0 | 6.1 | 6.1 | 6.1 | <0.001 |
| Volume (L) | 1.49 | 1.65 | 1.68 | 1.84 | 1.96 | <0.001 |
| RSS | ||||||
| calcium oxalate | 1.93 | 1.64 | 1.71 | 1.48 | 1.49 | <0.001 |
| brushite | 1.66 | 1.57 | 1.71 | 1.47 | 1.56 | 0.32 |
| uric acid | 2.23 | 1.86 | 1.70 | 1.51 | 1.39 | <0.001 |
Means adjusted for age, kidney stone history (yes or no), BMI, hypertension, diabetes, thiazide use, and 24-hour urinary creatinine.