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Table 4 Comparison of clinical characteristics among nephrolithiasis patients with normal and low bone mass

From: Association between low bone mass and the serum RANKL and OPG in patients with nephrolithiasis

Clinical characteristics Normal Osteoporosis/ Osteopenia P- value
Median(25th,75th) Median(25th,75th)
Age(years) 40(35.5,47) 56(42,64) 0.05
BMI (Kg/m2) 28.95(27.3,30.52) 27.43(24.49,30.39) 0.1
OPG(pmol/l) 3.1(2.8,3.7) 3.9(2.9,4.4) 0.03
sRANKL(pmol/l) 0.2(0.1,0.3) 0.2(0.1,0.2) 0.19
OPG/RANKL 14.5(10.17,29) 20(14,39) 0.08
Na(mEq/l) 137.30(136.65,138) 137.6(136.9139.2) 0.23
BUN(mg/dl) 13.6(12.1,15.9) 16.3(14.1,17.7) 0.25
Creatinie(mg/dl) 0.8(0.8,1.1) 1(0.8,1.3) 0.62
Uric acid (mg/dl) 5.3(4.4,6.1) 5.9(3.9,7) 0.94
Calcium(mg/dl) 9.6(9.1,9.9) 9.4(8.9,10) 0.62
Phosphorous(mg/dl) 3.3(3.25,4.2) 3.5(3.1,4.1) 0.94
Urine volume (ml/24 h) 900(775,1950) 1700(1100,2250) 0.21
Urine creatinine (mg/24 h) 1104(850,1570) 1360(946,1740) 0.59
Urine uric acid (mg/24 h) 702(369,876.5) 572(400,800) 0.52
Urine ca (mg/24 h) 195(99,294) 234(160,352) 0.51
Urine p(mg/24 h) 828(614,1134) 682(590,864) 0.21
PTH(pg/ml) 31.1(19.2,38.6) 37.5(27,61.4) 0.09
Vitamin D(nmol/l) 36.25(20.5,57.83) 36.8(26.15,64.95) 0.54
Urine citrate (mg/24 h) 496.5(259.25,743.75) 356(267,733) 0.67
eGFR(ml/minute) 111(100.04,129.6) 83.96(72.77, 112.75) 0.002
kidney stone disease duration (years) 1.25(1, 10.75) 5.5(3,11) 0.002