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Table 1 Comparison of variables before and after propensity score matching in high vs. low estimated albumin leakage (EAL) groups

From: Effects of high albumin leakage on survival between online hemodiafiltration and super high-flux hemodialysis: the HISTORY study

Item

Before matching

After matching

High EAL group

Low EAL group

P value

High EAL group

Low EAL group

P value

(a) Super high-flux hemodialysis

Patients, n

286

69

 

69

69

 

Age, years

71.8 ± 10.9

76.3 ± 10.2

0.003

73.1 ± 10.2

76.3 ± 10.2

0.084

Dialysis vintage, months

95.7 ± 92.2

104.7 ± 92.1

0.195

92.6 ± 86.2

104.7 ± 92.1

0.342

Diabetes mellitus, % with/without

32.3/67.7

26.1/73.9

0.019

33.3/66.7

26.1/73.9

0.456

Body mass index, kg/m2

21.9 ± 3.8

19.9 ± 3.5

 < 0.001

21.7 ± 4.0

19.9 ± 3.5

0.005

Normalized protein catabolism rate, g/kg/day

0.8 ± 0.2

0.8 ± 0.2

0.326

0.8 ± 0.2

0.8 ± 0.2

0.166

Albumin, g/dL

3.3 ± 0.4

3.3 ± 0.4

0.205

3.4 ± 0.3

3.3 ± 0.4

0.157

Corrected calcium, mg/dL

9.2 ± 0.7

9.3 ± 0.7

0.177

9.1 ± 0.7

9.3 ± 0.7

0.198

Phosphorus, mg/dL

5.0 ± 1.5

4.8 ± 1.5

0.296

5.2 ± 1.5

4.8 ± 1.5

0.093

Hemoglobin, g/dL

11.1 ± 1.1

10.7 ± 1.2

0.014

11.1 ± 1.0

10.7 ± 1.2

0.028

High-sensitivity C-reactive protein, mg/dL

0.520 ± 1.289

0.758 ± 1.700

0.292

0.715 ± 1.605

0.759 ± 1.700

0.633

Kt/V

1.7 ± 0.3

1.8 ± 0.5

0.047

1.7 ± 0.3

1.8 ± 0.5

0.164

(b) Online hemodiafiltration

Patients, n

224

204

 

147

147

 

Age, years

60.7 ± 11.3

69.4 ± 10.4

 < 0.001

64.1 ± 10.2

67.0 ± 10.4

 < 0.001

Dialysis vintage, months

159.2 ± 120.6

129.5 ± 114.7

0.005

144.8 ± 116.6

146.8 ± 124.2

0.904

Diabetes mellitus, % with/without

27.7/72.3

38.7/61.3

0.018

32.0/68.0

32.7/67.3

 > 0.999

Body mass index, kg/m2

22.9 ± 3.5

22.5 ± 4.2

0.084

22.8 ± 3.3

22.3 ± 4.3

0.034

Normalized protein catabolism rate, g/kg/day

0.9 ± 0.1

0.8 ± 0.2

0.172

0.9 ± 0.1

0.9 ± 0.2

0.713

Albumin, g/dL

3.4 ± 0.3

3.4 ± 0.3

0.691

3.4 ± 0.3

3.4 ± 0.3

0.495

Corrected calcium, mg/dL

9.2 ± 0.7

9.2 ± 0.7

0.537

9.2 ± 0.7

9.2 ± 0.6

0.728

Phosphorus, mg/dL

5.8 ± 1.5

5.3 ± 1.3

0.001

5.6 ± 1.3

5.4 ± 1.3

0.203

Hemoglobin, g/dL

11.3 ± 1.2

11.0 ± 1.3

 < 0.001

11.1 ± 1.1

11.0 ± 1.3

0.217

High-sensitivity C-reactive protein, mg/dL

0.417 ± 1.248

0.398 ± 1.111

0.678

0.360 ± 1.139

0.415 ± 1.135

0.246

Kt/V

1.6 ± 0.3

1.6 ± 0.3

0.210

1.6 ± 0.3

1.6 ± 0.3

0.311