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Table 1 Baseline characteristics of all, high ferritin and low ferritin patients

From: Systemic inflammation modulates the ability of serum ferritin to predict all-cause and cardiovascular mortality in peritoneal dialysis patients

 

All patients (n = 221)

Ferritin ≥100 μg/L (n = 152)

Ferritin < 100 μg/L (n = 69)

P

hsCRP > 3 mg/L (n = 96)

hsCRP≤ 3 mg/L (n = 56)

hsCRP> 3 mg/L (n = 45)

hsCRP≤ 3 mg/L (n = 24)

Ferritin, μg/L

291.4 ± 334.1

435.3 ± 384.2

355.4 ± 266.1

42.1 ± 26.0

36.1 ± 24.1

0.000

Demographics

 Age, years

53.0 ± 14.1

55.0 ± 14.6

52.5 ± 13.0

52.5 ± 16.1

47.8 ± 10.8

0.308

 Male, n (%)

122(55.5)

63 (65.6)

34 (60.7)

22 (48.9)

3 (12.5)

0.000

 Body mass index, kg/m2

22.6 ± 4.6

21.9 ± 4.2

22.0 ± 4.7

22.5 ± 3.7

21.3 ± 3.9

0.377

Causes of ESKD, % (n)

 Chronic glomerulonephritis

93 (42.1)

30 (31.3)

32 (57.1)

20 (44.4)

11 (45.9)

0.018

 Diabetes mellitus

51 (23.1)

21 (21.9)

11 (19.6)

13 (28.9)

6 (25.0)

0.716

 Hypertension

31 (14.0)

20 (20.8)

3 (5.4)

7 (15.6)

1 (4.2)

0.027

 Obstructive nephropathy

18 (8.1)

9 (9.4)

3 (5.4)

4 (8.9)

2 (8.3)

0.847

 Lupus nephritis

17 (7.7)

9 (9.4)

3 (5.4)

1 (2.2)

4 (16.7)

0.143

 Others

11 (5.0)

7 (7.2)

4 (7.1)

0 (0.0)

0 (0)

0.154

Deaths

 All-cause death, % (n)

50 (22.6)

31 (32.3)

8 (14.3)

8 (17.8)

3 (12.5)

0.025

 Cardiovascular death, % (n)

23 (10.4)

15 (15.6)

3 (5.3)

3 (6.7)

2 (8.3)

0.163

Biochemical parameters

 24 h Urine Amount, mL

1366.8 ± 639.5

1326.5 ± 636.0

1371.9 ± 638.1

1347.0 ± 667.1

1427.8 ± 711.1

0.952

 SBP, mmHg

156.0 ± 21.7

157.8 ± 20.5

153.0 ± 24.0

153.0 ± 23.9

159.0 ± 24.0

0.416

 DBP, mmHg

87.8 ± 13.4

88.2 ± 12.5

86.5 ± 13.0

87.8 ± 14.8

89.1 ± 15.9

0.871

 Kt/V

2.0 ± 0.6

2.0 ± 0.6

2.3 ± 1.0

2.0 ± 0.4

2.0 ± 0.4

0.739

 PET D/Pcr

0.7 ± 0.1

0.6 ± 0.1

0.7 ± 0.1

0.7 ± 0.1

0.7 ± 0.1

0.484

 BUN, mmol/L

29.6 ± 12.6

29.7 ± 13.8

31.7 ± 12.0

27.2 ± 12.0

29.3 ± 9.4

0.377

 Creatinine, μmol/L

790.6 ± 258.0

785.8 ± 282.0

807.2 ± 211.3

812.0 ± 253.2

742.9 ± 273.3

0.731

 eGFR, mL/min/1.73 m2

6.0 ± 2.6

6.4 ± 2.7

5.3 ± 2.2

5.6 ± 2.1

6.1 ± 3.4

0.271

 Phosphorus, mmol/L

2.0 ± 0.6

2.1 ± 0.7

2.1 ± 0.6

2.0 ± 0.6

2.1 ± 0.5

0.854

 Calcium, mmol/L

1.9 ± 0.3

1.9 ± 0.3

2.0 ± 0.3

1.9 ± 0.3

2.0 ± 0.2

0.431

 Cholesterol, mmol/L

4.7 ± 1.5

4.7 ± 1.7

4.7 ± 1.3

4.6 ± 1.2

5.4 ± 1.6

0.153

 Triglyceride, mmol/L

1.7 ± 1.0

1.6 ± 1.0

1.7 ± 0.9

1.8 ± 1.1

1.7 ± 1.1

0.787

 LDL-C, mmol/L

2.9 ± 1.1

2.9 ± 1.2

2.9 ± 1.0

3.1 ± 1.1

3.1 ± 1.1

0.745

 HDL-C, mmol/L

1.1 ± 0.3

1.1 ± 0.3

1.1 ± 0.3

1.1 ± 0.3

1.3 ± 0.4

0.067

 apolipoproteinA, g/L

1.0 ± 0.2

1.0 ± 0.3

1.1 ± 0.2

1.0 ± 0.2

1.1 ± 0.3

0.319

 Uric acid, μmol/L

538.0 ± 140.2

552.0 ± 138.9

550.0 ± 126.6

493.2 ± 136.2

539.5 ± 169.8

0.132

 hs-CRP, mg/L

21.0 ± 36.3

37.1 ± 43.2

0.7 ± 0.1

20.3 ± 35.0

1.1 ± 0.8

0.000

 Albumin, g/L

32.7 ± 5.4

31.9 ± 5.2

34.3 ± 6.0

32.3 ± 4.6

33.0 ± 5.7

0.067

 Prealbumin, g/L

0.3 ± 0.2

0.3 ± 0.1

0.4 ± 0.1

0.4 ± 0.3

0.3 ± 0.1

0.145

 Hemoglobin, g/L

82.0 ± 20.0

78.9 ± 21.6

81.0 ± 17.6

84.4 ± 20.8

84.1 ± 15.8

0.427

 iPTH, pg/mL

349.0 ± 292.2

307.2 ± 281.3

368.2 ± 238.2

382.9 ± 368.8

391.7 ± 295.6

0.587

 TAST, %

0.3 ± 0.2

0.3 ± 0.2

0.4 ± 0.2

0.3 ± 0.2

0.4 ± 0.2

0.407

 Fe (iron), μmol/L

48.1 ± 44.1

48.4 ± 49.8

50.7 ± 42.0

44.4 ± 33.0

42.5 ± 40.4

0.909

  1. Values expressed as mean ± SD, or number (percent)