Table 1 Clinical and biological parameters of patients among the three groups.

Male [n (%)]

11 (55.00)

15 (51.70)

15 (51.70)

0.11

Age (years)

45.00 ± 8.90

43.10 ± 7.80

48.00 ± 7.20

2.87

Education (years)

11.10 ± 3.06

11.24 ± 2.46

10.83 ± 2.25

0.19

Type of kidney diseases

9.88

Chronic glomerulonephritis

—

17

15

Diabetic nephropathy

—

1

5

Benign arteriolar nephrosclerosis

—

0

1

Polycystic kidney

—

1

1

IgA nephropathy;

—

0

1

Medullary sponge kidney

—

0

1

Chronic kidney disease of unknown etiology

—

6

5

Nephrotic syndrome

—

3

0

Systemic lupus erythematosus nephropathy

—

1

0

HB (g/L)

142.20 ± 20.20

107.90 ± 13.00

108.90 ± 12.80

37.23

HCT (L/L)

0.43 ± 0.05

0.33 ± 0.04

0.33 ± 0.04

38.54

WBC (10 ^9/L )

6.14 ± 1.26

5.99 ± 1.80

5.79 ± 1.61

0.29

RBC (10 ^12/L )

4.94 ± 0.45

3.69 ± 0.50

3.69 ± 0.52

47.15

BUN (mmol/L)

4.40 ± 0.85

27.55 ± 5.71

24.33 ± 4.42

179.30

Cr (umol/L)

71.55 ± 8.65

1052.00 ± 195.90

965.00 ± 172.50

258.40

ALB (g/L)

46.04 ± 2.49

40.04 ± 1.99

41.46 ± 4.03

24.40

Dialysis duration (months)

—

71.52 ± 38.13

78.07 ± 47.39

0.58

Calcium (mmol/L)

—

2.15 ± 0.24

2.25 ± 0.29

1.34

Phosphate (mmol/L)

—

2.25 ± 0.70

2.07 ± 0.69

0.96

PTH (pg/mL)

—

534.3 ± 478.2

420.5 ± 362.6

1.02

Dry weight (kg)

—

61.42 ± 11.25

58.00 ± 8.28

1.32