Table 2.

Twenty-four-hour urine composition by DASH score in men (HPFS)

ComponentQuintile 1Quintile 2Quintile 3Quintile 4Quintile 5P for Trend
Calcium (mg)1951842012062010.12
Oxalate (mg)3839403945<0.001
Citrate (mg)6616747087107330.004
Uric acid (mg)6016076236106450.04
Sodium (mEq)1861831831851770.26
Sulfate (mmol)2224232425<0.001
Potassium (mEq)6675777987<0.001
Magnesium (mg)115120122127135<0.001
Phosphate (mg)103510661052110711000.002
pH (units)5.85.85.95.95.90.01
Volume (L)1.551.711.721.711.79<0.001
RSS
    calcium oxalate2.081.861.951.931.970.61
    brushite1.381.181.341.371.350.57
    uric acid2.682.492.352.352.260.02
  • Means adjusted for age, kidney stone history (yes or no), BMI, hypertension, diabetes, thiazide use, and 24-hour urinary creatinine.