Table 3 Clinical parameters

Recirculation fraction [%]

13.0 ± 6.7

14.4 ± 9.0

12.1 ± 6.6

12.5 ± 8.7

13.8 ± 8.5

13.1 ± 7.4

NS

None

1 vs.2-6

Ionic Kt/V

1.37 ± 0.33

1.27 ± 0.34

1.39 ± 0.36

1.44 ± 0.41

1.60 ± 0.39

1.66 ± 0.38

<0.0001

1 vs.5,6

1 vs.2-4

Urea Kinetic Volume [Liters]

31.3 ± 5.5

31.0 ± 6.8

33.2 ± 7.3

33.0 ± 7.0

31.7 ± 7.3

33.7 ± 7.9

NS

None

1 vs.2-6

Clearance [ml/min]

183 ± 36

172 ± 50

196 ± 36

209 ± 32

219 ± 31

235 ± 31

<0.0001

1 vs.3-6

1 vs.2

Minimum RBV [%]

82.5 ± 7.3

80.1 ± 7.2

80.3 ± 8.6

80.3 ± 8.3

82.4 ± 8.5

85.2 ± 7.4

<0.001

2 vs.6

1 vs .2-6

Haemoglobin post HDF [g/dL]

9.4 ± 2.7

10.1 ± 2.6

9.8 ± 2.8

9.7 ± 2.9

9.0 ± 2.7

8.4 ± 2.4

<0.0001

1 vs.2

1 vs.3-6

Haemoglobin pre HDF [g/dL]

7.2 ± 1.8

7.5 ± 1.9

7.2 ± 1.8

7.2 ± 2.0

6.8 ± 1.8

6.7 ± 1.8

<0.0001

2 vs.6

1 vs.2-6

pre HDF BWC [%]

86.4 ± 1.4

86.1 ± 1.6

86.4 ± 1.6

86.4 ± 1.8

86.7 ± 1.7

86.8 ± 1.6

NS

None

1 vs.2-6

post HDF BWC [%]

84.5 ± 2.3

83.9 ± 2.3

84.2 ± 2.4

84.3 ± 2.5

85.0 ± 2.1

85.4 ± 2.1

<0.0001

1 vs.5-6

1 vs.2-4

Δ Haemoglobin [g/dL]

2.2 ± 1.3

2.7 ± 1.4

2.6 ± 1.5

2.5 ± 1.4

2.2 ± 1.3

1.8 ± 1.0

<0.0001

1 vs.2-4

1 vs.5,6

Δ BWC [g/dL]

1.9 ± 1.1

2.2 ± 1.2

2.2 ± 1.3

2.1 ± 1.2

1.8 ± 1.1

1.4 ± 0.9

<0.0001

1 vs.2-4

1 vs.5,6.