Table 4 Demographic and clinical characteristics of low sodium or high sodium patients

Number of patients

274

357

N/A

Deaths during follow-up, n (%)

108 (39.4%)

86 (24.1%)

< 0.001

Deaths in cardiovascular disease, n (%)

49 (17.9%)

23 (6.4%)

< 0.001

Age, years

60.6 ± 12.7

61.5 ± 11.7

0.387

Female, n (%)

89 (32.5%)

147 (41.2%)

0.025

Diabetic nephropathy, n (%)

80 (29.2%)

46 (12.9%)

< 0.001

Hemodialysis duration, months

107.4 ± 83.8

112.3 ± 88.0

0.480

Body mass index, kg/m²

21.9 ± 3.3

22.4 ± 3.2

0.114

Kt/V

1.50 ± 0.24

1.51 ± 0.27

0.887

Cumu. mean predia. β₂-M, mg/L

29.1 ± 5.4

28.4 ± 5.2

0.113

Normalized PCR, g/kg/day

1.01 ± 0.19

1.01 ± 0.17

0.688

Creatinine generation rate, %

97.7 ± 21.8

103.0 ± 22.2

0.003

WBC count, 10³/μL

6.32 ± 1.86

5.92 ± 1.75

0.006

Hemoglobin, g/dL

10.5 ± 1.2

10.6 ± 1.1

0.239

Hematocrit, %

32.2 ± 3.8

32.6 ± 3.4

0.111

Platelet count, 10³/μL

199.8 ± 61.7

187.2 ± 52.1

0.006

Albumin, g/dL

3.62 ± 0.36

3.70 ± 0.32

0.003

Urea nitrogen, mg/dL

75.1 ± 17.1

75.4 ± 15.0

0.834

Uric acid, mg/dL

7.59 ± 1.25

7.83 ± 1.11

0.011

Creatinine, mg/dL

11.2 ± 2.7

11.6 ± 2.9

0.064

Mean predialysis sodium, mEq/L

137.3 ± 1.9

141.9 ± 1.3

< 0.001

Potassium, mEq/L

4.93 ± 0.74

4.80 ± 0.66

0.020

Calcium, mg/dL

9.89 ± 0.86

9.78 ± 0.73

0.073

Phosphate, mg/dL

5.11 ± 1.21

5.20 ± 1.05

0.298

Interdialytic weight gain, % of DW

4.81 ± 1.32

4.29 ± 1.26

< 0.001