Table 2 Urinary volume and solute concentrations in 24-h urine samples of the four study groups
Adults | Children | |||||
|---|---|---|---|---|---|---|
Healthy | Stone formers | p-value | Heatlhy | Stone formers | p-value | |
Volume (mL/24 h) | 1573 (1189–2173) | 1778 (1250–2380) | 0.089 | 876 (672–1180) | 1100 (645–1707) | 0.111 |
Creatinine (mg/L) | 919 (648–1230) | 804 (571–1098) | 0.106 | 970 (763–1294) | 796 (565–1245) | 0.007 |
Calcium (mg/L) | 106 (70–179) | 124 (89–174) | 0.166 | 72 (45–120) | 130 (72–231) | < 0.001 |
Magnesium (mg/L) | 64 (44–86) | 55 (43–76) | 0.143 | 113 (77–142) | 93 (52–125) | 0.081 |
Oxalate (mg/L) | 15 (12–19) | 20 (14–24) | 0.001 | 22 (17–29) | 25 (22–32) | 0.120 |
Phosphorous (mg/L) | 517 (397–784) | 515 (357–637) | 0.207 | 840 (597–1063) | 597 (430–768) | 0.002 |
Uric acid (mg/L) | 369 (272–513) | 343 (258–481) | 0.334 | 548 (393–691) | 411 (298–606) | 0.018 |
Citrate (mg/L) | 435 (286–676) | 322 (226–470) | 0.003 | 517 (373–722) | 347 (205–626) | 0.005 |