Table 3 Baseline characteristics of the study population

Number

60

30

30

Age, year

54.2 ± 12.7

55.7 ± 11.73

52.8 ± 13.6

0.376

Male gender, n (%)

34(56.6)

17(28.3)

17(28.3)

1

Hemodialysis vintage, month

64.4 ± 49.3

56.7 ± 47.7

72.0 ± 50.4

0.233

Dry weight, kg

59.2 ± 8.47

59.9 ± 8.56

58.5 ± 8.47

0.530

Height, cm

168 ± 7.59

168 ± 6.56

168 ± 8.60

0.827

Body mass index, kg/m²

20.8 ± 2.73

21.1 ± 2.77

20.6 ± 2.70

0.429

Interdialytic weight gain, kg

2.3 ± 0.87

2.0 ± 0.92

2.7 ± 0.70

0.005

Primary kidney disease, n (%)

0.585

Hypertension

16(26.6)

9(15)

7(11.6)

Diabetes mellitus

16(26.6)

9(15)

7(11.6)

Others/unknown

28(46.6)

12(20)

16(26.6)

Statin use, n (%)

9(15)

6(10)

3(5)

0.236

Serum albumin, g/dl

3 ± 0.28

3 ± 0.27

3 ± 0.30

0.788

Serum prealbumin, mg/dl

11.7 ± 3.70

10.9 ± 3.65

12.6 ± 3.60

0.064

Total iron binding capacity, µg/dl

186 ± 19.7

185 ± 24.3

186 ± 14.2

0.928

Total cholesterol, mg/dl

103 ± 23.1

106 ± 27.3

99.6 ± 17.8

0.238

High-sensitivity c-reactive protein, mg/l

6.4 ± 2.41

6.58 ± 2.24

6.40 ± 2.74

0.778

Serum ferritin, ug/l

561 ± 467.8

544 ± 404

578 ± 529

0.780

Hemoglobin, g/dl

9.2 ± 1.56

9.3 ± 1.59

9.1 ± 1.56

0.696

Sodium, mEq/l

140 ± 2.54

140 ± 1.86

141 ± 3.04

0.173

Potassium, mEq/l

4.4 ± 0.64

4.3 ± 0.60

4.5 ± 0.68

0.323

Phosphorus, mg/dl

6 ± 1.43

6 ± 1.29

6 ± 1.58

0.979

Calcium, mg/dl

7.7 ± 0.90

7.7 ± 0.93

7.7 ± 0.88

0.876

Intact parathyroid hormone, pg/ml

464 ± 242

482 ± 215

446 ± 269

0.570

Pre-dialysis urea, mg/dl

146 ± 26.2

152 ± 26.8

140 ± 24.8

0.094

Post-dialysis urea, mg/dl

48.4 ± 9.03

48.8 ± 10.01

47.9 ± 8.08

0.693

Single pool Kt/V

1.3 ± 0.09

1.3 ± 0.10

1.3 ± 0.08

0.153

Creatinine, mg/dl

6.2 ± 1.25

6.3 ± 1.25

6.1 ± 1.26

0.611

Creatinine/Body surface area, mg/dl/m²

3.1 ± 0.64

3.1 ± 0.61

3.1 ± 0.68

0.856

nPNA, g/kg/day

0.75 ± 0.11

0.77 ± 0.11

0.72 ± 0.10

0.064

Lean body mass, kg

48.1 ± 5.74

48.5 ± 5.67

47.7 ± 5.88

0.564

French PEW score, n (%)

0–1

48(80)

24(80)

24(80)

2

11(18.3)

5(16.7)

6(20)

3

1(1.7)

1(3.3)

0(0)

4

0(0)

0(0)

0(0)

French PEW score, median (minimum-maximum)

1(0–3)

1(0–3)

1(0–2)

0.399