Table 1 Baseline characteristics of the CVC group and non-CVC group

Male [n(%)]

42(56.8)

106(70.7)

 < 0.05

Age(year)

68.9 ± 9.9

51.8 ± 13.9

 < 0.05

Dialysis duration (m,\(\overline{\mathrm{x} }\)±s)*

21.9 ± 8.3

17.4 ± 7.7

 < 0.05

BMI(kg/m²,‾x ± s)

22.93 ± 3.15

23.22 ± 3.45

0.549

CVD [n(%)]

20(27.0)

24(16.0)

0.051

DM [n(%)]

18(24.3)

37(24.7)

0.955

HBP [n(%)]

71(95.9)

147(98.0)

0.399

Smoking [n(%)]

4(5.4)

23(15.3)

 < 0.05

RBC(× 10^¹²/L,‾x ± s)

3.70 ± 0.63

3.74 ± 0.54

0.573

Hb (g/L,‾x ± s)

109.7 ± 15.5

111.6 ± 15.3

0.407

Plt (× 10^⁹/ L,‾x ± s)

192.9 ± 54.1

199.1 ± 54.5

0.426

albumin(g/L,‾x ± s)

36.4 ± 3.7

38.70 ± 3.2

 < 0.05

BUN (mmol/L,‾x ± s)

22.5 ± 6.0

25.3 ± 6.0

 < 0.05

SCr (μmol/L,‾x ± s)

896.9 + 216.6

1089.7 ± 268.1

 < 0.05

Ca (mmol/ L,‾x ± s)

2.26 ± 0.28

2.32 ± 0.25

0.105

P (mmol/L,‾x ± s)

1.88 ± 0.62

2.11 ± 0.66

 < 0.05

iPTH(pg/ml,‾x ± s)

379.7 ± 319.2

365.0 ± 268.6

0.723

25(OH)D(nmol/L)

30.2(21.2 ~ 44.1)

26.3(18.8 ~ 39.1)

0.118

TC(mmol/L,‾x ± s)

4.19 ± 0.89

4.23 ± 1.00

0.880

HDL-C (mmol/L,‾x ± s)

1.05 ± 0.40

1.06 ± 0.34

0.961

LDL-C (mmol/L,‾x ± s)

2.51 ± 0.76

2.46 ± 0.87

0.827

NT-proBNP(pg/ml)

4854(2163 ~ 10,345)

3065(1568 ~ 6009)

 < 0.05

hsCRP(mg/L,‾x ± s)

6.39 ± 10.10

6.50 ± 9.23

0.936

Primary renal disease [n(%)]

 CG

21(28.4%)

69(46.0%)

 < 0.05

 DN

12(16.2%)

26(17.3%)

0.834

 HN

7(9.5%)

5(3.3%)

0.055

 PKD

7(9.5%)

10(6.7%)

0.458

 Other

23(31.1%)

40(26.7%)

0.131