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Table 3 The results of 24-h urine analysis and supersaturation indices of the study groups at baseline and the end of the treatment by vitamin D supplement (cholecalciferol)

From: Effect of two vitamin D repletion protocols on 24-h urine calcium in patients with recurrent calcium kidney stones and vitamin D deficiency: a randomized clinical trial

 

Study groups

Time effect

Group effect

2000/daily

50,000/weekly

β (95% CI)

p- value

β (95% CI)

p- value

Before

After

Before

After

24-U volume (mL/24 h)

2098 (898)

2414 (1094)

1806 (687)

2196 (768)

357 (174, 539)

 < 0.001***

− 255 (− 653, 144)

0.210

24-U creatinine (gr/24 h)

1.18 (0.35)

1.19 (0.35)

1.16 (0.37)

1.22 (0.31)

0.03 (− 0.03, 0.10)

0.296

0.003 (− 0.15, 0.16)

0.966

24-U calcium (mg/24 h)

160.29 (62.07)

233.50 (64.90)

155.26 (67.81)

222.06 (93.56)

69.70 (52.34, 87.06)

 < 0.001***

− 8.23 (− 39.18, 22.72)

0.602

24-U sodium (meq/24 h)

134.48 (74.83)

154.90 (53.65)

159.38 (64.41)

156.29 (57.29)

7.52 (− 11.32, 26.38)

0.434

13.14 (− 11.21, 37.50)

0.290

24-U potassium (meq/24 h)

49.98 (16.71)

53.07 (17.45)

49.86 (24.77)

57.08 (27.16)

5.35 (− 0.98, 11.68)

0.098

1.96 (− 6.72, 10.61)

0.660

24-U phosphate (gr/24 h)

0.66 (0.24)

0.73 (0.26)

0.65 (0.23)

0.71 (0.28)

0.06 (− 0.008, 0.13)

0.085

− 0.01 (− 0.11, 0.08)

0.750

24-U magnesium (mg/24 h)

64.47 (21.46)

81.31 (34.14)

65.41 (24.85)

92.05(35.58)

22.21 (14.03, 30.39)

 < 0.001***

5.83 (− 6.24, 17.92)

0.344

24-U citrate (mg/24 h)

741.26 (352.89)

810.64 (348.32)

626.44 (337.74)

891.38 (373.75)

181.27 (99.33, 263.20)

 < 0.001***

− 11.89 (− 167.71, 143.92)

0.881

24-U oxalate (mg/24 h)

41.11 (15.71)

43.90 (18.76)

37.09 (15.98)

43.00 (18.49)

4.50 (0.14, 9.14)

0.058

− 2.46 (− 9.53, 4.60)

0.494

24-U urea (gr/24 h)

27.07 (9.04)

30.63 (8.62)

27.94 (9.71)

30.59 (9.56)

3.06 (0.44, 5.67)

0.022*

0.41 (− 3.26, 4.08)

0.827

24-U uric acid (mg/24 h)

431.54 (146.79)

416.78 (139.60)

467.09 (216.64)

478.56 (175.28)

− 0.37 (− 46.56, 45.56)

0.987

48.66 (− 22.44, 119.77)

0.180

pH

5.39 (0.83)

5.50 (0.96)

5.12 (0.48)

5.38 (0.82)

0.19 (− 0.05, 0.43)

0.120

− 0.19 (− 0.50, 0.10)

0.207

CaOx SS

5.52 (2.83)

6.23 (2.13)

5.27 (2.42)

6.05 (2.60)

0.74 (− 0.00, 1.50)

0.052

− 0.22 (− 1.19, 0.75)

0.654

CaP SS

0.58 (1.16)

0.58 (1.19)

0.20 (0.24)

0.68 (1.45)

0.26 (− 0.06, 0.58)

0.110

− 0.13 (− 0.59, 0.31)

0.550

  1. The groups were compared using general linear model (GLM) with generalized estimating equations (GEE) approach. The values of before and after of study groups stand for mean (standard deviation)
  2. CI, confidence interval; 24-U, 24-Hour urine; CaOx SS, calcium oxalate supersaturation; CaP SS, calcium phosphate supersaturation
  3. *p < 0.05; **p < 0.01; ***p < 0.001. Bold values emphasize statistical significance