Table 1 Clinical characteristics of participants in the first 2 years after PD initiation

Age

54.3 ± 16.8

/

/

Male, n(%)

130(60.2%)

/

/

CAPD,n(%)

202(93.5%)

/

/

BMI (kg/m2)

22.4 ± 3.3

23.3 ± 3.6^*

23.6 ± 3.8

SBP (mmHg)

140(130,155)

130(117,145)

131(120,141)

DBP (mmHg)

80(73,90)

80(70,90)

80(72,90)

MAP

100.7(93.3,110.0)

96.7(89.7,106.7)^*

98.0(90.0,106.7)^*

LVDd (cm)

5.0(4.6,5.4)

4.9(4.5,5.3)^*

4.9(4.4, 5.2)^*

PWT (cm)

1.1(0.9,1.2)

1.0(0.9,1.1)^*

1.0(0.9,1.2)^*

IVS (cm)

1.1(1.0,1.3)

1.1(1.0,1.3)

1.1(1.0,1.3)

LVMI (g/m²)

128.9(107.7, 154.9)

115.9(98.1,136.6)^*

116.6(93.3,139.6)^*

LVEF (%)

66.0(62.0,71.0)

67.0(64.0,71.0)

67.0(63.0,72.0)

E/A ratio

0.79(0.63,1.00)

0.73(0.61,0.90)

0.71(0.59,0.87)

Dialysis-related variables

  nPCR (g/kg/24 h)

0.91 ± 0.19

0.95 ± 0.20

0.92 ± 0.22

  Urinary output(L/24 h)

1.10(0.63,1,50)

0.80(0.40,1.33)^*

0.55(0.08,1.10)^*#

  Total Ccr (L/week)

78.4(62.4,96.7)

64.9(52.5,80.2)^*

54.5(47.5,72.1)^*#

  Residual renal Ccr (L/week)

43.0(27.4,64.2)

30.7(13.6,46.7)^*

17.1(0.83,38.2)^*

  Total Kt/V

2.04(1.76,2.42)

1.86(1.62,2.14)

1.79(1.58,2.08)^*

  Residual renal Kt/V

0.84(0.50,1.21)

0.63(0.24,0.93)^*

0.33(0.01, 0.72)^*#

  Volume of dialysate (per 1000 mL/24 h)

5.98(5.51,6.37)

6.21(5.75,7.89)^*

6.60(6.00,8.70)^*#

  Proportion of 1.5%-glucose dialysate(%)

100(100,100)

70.8(66.7,100)

100(66.7,100)

Biochemical parameters

 Hemoglobin (g/L)

86.7 ± 19.0

106.1 ± 16.7^*

107.0 ± 16.9^*

 Ferritin (ng/ml)

192.1(86.4,370.5)

212.6(140.7,344.5)

216.9(131.3,305.5)

 Serum iron (umol/L)

10.3(7.7,14.1)

12.6(9.9,17.4)^*

12.8(9.9,16.6)^*

 Iron saturation (%)

27.0(20.0,37.0)

33.0(25.0, 43.0)^*

32.0(24.0,41.0)^*

 Albumin (g/L)

35.3 ± 5.1

35.9 ± 5.0

36.4 ± 4.8^*

 Calcium (mmol/L)

2.05(1.89, 2.19)

2.18(2.05, 2.34)^*

2.24(2.09,2.37)^*

 Phosphate (mmol/L)

1.62(1.30,1.97)

1.49(1.25,1.72)^*

1.49(1.24,1.79)^*

 iPTH (pg/ml)

270.5(158.4,440.0)

261.2(156.5,408.6)

255.5(164.0,389.5)

 CHO (mmol/L)

4.13(3.54,5.11)

4.24(3.65,4.93)

4.18(3.61,5.02)

 TG (mmol/L)

1.39(1.05,1.98)

1.68(1.15,2.47)^*

1.72(1.15,2.56)^*

 LDL (mmol/L)

2.33(1.87,2.93)

2.17(1.74,2.66)^*

2.19(1.72,2.71)^*

 HDL (mmol/L)

0.95(0.81,1.18)

0.91(0.77,1.13)

0.90(0.75,1.12)^*

 ApoA1 (g/L)

0.97(0.84,1.10)

1.00(0.88,1.15)^*

0.99(0.87,1.17)

 ApoB (g/L)

0.65(0.55,0.81)

0.66(0.56,0.78)

0.66(0.57.0.77)

 NT-proBNP (per 1000 pg/ml)

1.81(0.83,6.45)

1.31(0.57,3.08)^*

1.89(0.70,6.41)^#

 hsCRP (mg/L)

2.11(0.47,4.46)

0.86(0.33,2.79)^*

0.85(0.41,2.67)^*

 FIB (g/L)

3.48(2.95,4.32)

3.80(3.39,4.40)^*

3.82(3.32,4.45)^*