Table 3.

Twenty-four-hour urine composition by DASH score in older women (NHS I)

ComponentQuintile 1Quintile 2Quintile 3Quintile 4Quintile 5P for Trend
Calcium (mg)1801902012021980.008
Oxalate (mg)29283030310.001
Citrate (mg)5896126436606610.001
Uric acid (mg)4344474514504470.29
Sodium (mEq)1381421421391410.70
Sulfate (mmol)1616161818<0.001
Potassium (mEq)5259606469<0.001
Magnesium (mg)959699107110<0.001
Phosphate (mg)7157727327747740.002
pH (units)5.95.96.06.16.1<0.001
Volume (L)1.591.761.791.842.04<0.001
RSS
    calcium oxalate1.761.551.651.601.450.003
    brushite1.281.181.271.381.240.68
    uric acid1.811.681.571.421.22<0.001
  • Means adjusted for age, kidney stone history (yes or no), BMI, hypertension, diabetes, menopause, thiazide use, and 24-hour urinary creatinine.