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Table 2 Comparison of variables before and after propensity score matching in super high-flux hemodialysis patients by estimated albumin leakage (EAL) and serum albumin concentration (s-Alb)

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 and high s-Alb group

High EAL and low s-Alb group

P value

High EAL and high s-Alb group

High EAL and low s-Alb group

P value

(a) High EAL and high s-Alb group versus high EAL and low s-Alb group

Patients, n

152

134

 

79

79

 

Age, years

68.0 ± 11.3

76.0 ± 8.8

 < 0.001

72.0 ± 11.1

72.5 ± 8.8

0.917

Dialysis vintage, months

93.4 ± 93.9

98.2 ± 90.6

0.404

98.9 ± 99.0

105.6 ± 90.6

0.417

Diabetes mellitus, % with/without

41.4/58.6

41.8/58.2

 > 0.999

41.8/58.2

40.5/59.5

 > 0.999

Body mass index, kg/m2

22.6 ± 4.1

21.0 ± 3.3

0.001

22.1 ± 3.6

21.6 ± 3.2

0.285

Normalized protein catabolism rate, g/kg/day

0.9 ± 0.2

0.8 ± 0.2

 < 0.001

0.8 ± 0.1

0.8 ± 0.2

0.858

Corrected calcium, mg/dL

9.0 ± 0.6

9.4 ± 0.7

 < 0.001

9.2 ± 0.6

9.2 ± 0.7

0.990

Phosphorus, mg/dL

5.3 ± 1.5

4.6 ± 1.3

0.001

5.0 ± 1.5

4.9 ± 1.2

0.580

Hemoglobin, g/dL

11.3 ± 1.1

10.8 ± 1.1

 < 0.001

11.0 ± 1.1

10.9 ± 1.0

0.789

High-sensitivity C-reactive protein, mg/dL

0.206 ± 0.313

0.877 ± 1.791

 < 0.001

0.262 ± 0.383

0.268 ± 0.279

0.224

Kt/V

1.7 ± 0.3

1.7 ± 0.3

0.378

1.7 ± 0.3

1.7 ± 0.3

0.917

(b) High EAL and high s-Alb group versus low EAL and high s-Alb group

Patients, n

152

31

 

30

30

 

Age, years

68.0 ± 11.3

73.9 ± 10.5

0.008

73.3 ± 7.8

73.2 ± 10.0

0.830

Dialysis vintage, months

93.4 ± 93.9

94.9 ± 70.2

0.374

85.7 ± 83.7

96.4 ± 70.9

0.363

Diabetes mellitus, % with/without

41.4/58.6

29.0/71.0

0.230

43.3/56.7

30.0/70.0

0.422

Body mass index, kg/m2

22.6 ± 4.1

21.3 ± 3.6

0.076

21.4 ± 3.9

21.5 ± 3.4

0.965

Normalized protein catabolism rate, g/kg/day

0.9 ± 0.2

0.8 ± 0.1

0.194

0.8 ± 0.2

0.8 ± 0.1

 > 0.999

Corrected calcium, mg/dL

9.0 ± 0.6

9.1 ± 0.6

0.482

9.2 ± 0.5

9.1 ± 0.6

0.310

Phosphorus, mg/dL

5.3 ± 1.5

4.9 ± 1.3

0.137

4.7 ± 1.4

4.9 ± 1.3

0.446

Hemoglobin, g/dL

11.3 ± 1.1

11.0 ± 1.2

0.231

10.9 ± 1.0

10.9 ± 1.1

0.756

High-sensitivity C-reactive protein, mg/dL

0.206 ± 0.313

0.281 ± 0.584

0.669

0.170 ± 0.280

0.289 ± 0.592

0.337

Kt/V

1.7 ± 0.3

1.7 ± 0.4

0.461

1.7 ± 0.3

1.7 ± 0.4

0.859

(c) High EAL and high s-Alb group versus low EAL and low s-Alb group

Patients, n

152

38

 

19

19

 

Age, years

68.0 ± 11.3

78.2 ± 9.6

 < 0.001

74.5 ± 9.8

74.8 ± 9.4

0.918

Dialysis vintage, months

93.4 ± 93.9

112.8 ± 107.1

0.191

97.1 ± 89.8

126.9 ± 105.1

0.286

Diabetes mellitus, % with/without

41.4/58.6

23.7/76.3

0.230

36.8/63.2

26.3/73.7

0.728

Body mass index, kg/m2

22.6 ± 4.1

18.9 ± 3.1

 < 0.001

19.3 ± 3.1

20.0 ± 2.8

0.439

Normalized protein catabolism rate, g/kg/day

0.9 ± 0.2

0.8 ± 0.2

0.004

0.9 ± 0.2

0.8 ± 0.2

0.413

Corrected calcium, mg/dL

9.0 ± 0.6

9.5 ± 0.8

0.001

9.4 ± 0.7

9.3 ± 1.0

0.759

Phosphorus, mg/dL

5.3 ± 1.5

4.7 ± 1.6

0.067

5.0 ± 1.3

5.1 ± 1.1

0.965

Hemoglobin, g/dL

11.3 ± 1.1

10.4 ± 1.2

 < 0.001

10.6 ± 1.0

10.4 ± 1.3

0.781

High-sensitivity C-reactive protein, mg/dL

0.206 ± 0.313

1.149 ± 2.165

 < 0.001

0.285 ± 0.552

0.383 ± 0.641

0.082

Kt/V

1.7 ± 0.3

1.8 ± 0.5

0.018

1.8 ± 0.4

1.9 ± 0.4

0.651