Table 1 Clinical characteristics of the HICBs and non-HICBs groups

Age, years

64.4 ± 9.6

65.0 ± 10.1

0.8857

Male, n (%)

6 (50.0)

6 (50.0)

1.0000

Hemodialysis duration, years

26.3 ± 7.9

20.8 ± 6.7

0.0785

Observation period, months

61.9 ± 16.3

58.0 ± 12.2

0.5120

Diabetes mellitus, n (%)

2 (16.7)

1 (8.3)

0.8913

Dry weight, kg

51.3 ± 9.6

47.13

0.2595

Body mass index, kg/m²

20.5 ± 3.6

19.4 ± 2.5

0.7984

Cardiothoracic rate, %

50.7 ± 4.9

51.7 ± 4.8

0.3092

Systolic blood pressure before dialysis, mmHg

137.6 ± 25.9

140.4 ± 14.1

0.7551

Diastolic blood pressure before dialysis, mmHg

74.8 ± 14.9

75.1 ± 10.3

0.9497

BMIPP summed score at first BMIPP SPECT

6 (3.0–17.5)

6 (2.0–9.5)

0.3645

Hemoglobin, g/dl

10.8 ± 0.5

10.6 ± 0.5

0.4212

Urea nitrogen, mg/dl

57.8 ± 7.12

58.7 ± 7.5

0.7738

Creatinine, mg/dl

9.0 ± 2.3

10.1 ± 2.7

0.3126

Calcium mg/dl

8.7 ± 0.45

8.6 ± 0.6

0.7557

Inorganic phosphorus, mg/dl

5.3 ± 0.8

5.5 ± 0.8

0.4139

Albumin, g/dl

3.7 ± 0.3

3.6 ± 0.44

0.6687

β2-microglobulin, mg/l

23.0 ± 4.6

29.2 ± 5.2

0.0056

C-reactive protein, mg/dl

0.42 (0.14–0.98)

0.58 (0.16–1.1)

0.9310

Parathyroid hormone-intact, pg/ml

88.7 (29.5–166.3)

62.8 (16.3–139.5)

0.3708

Dialysis mode (hemodialysis/hemodiafiltration), n

12/0

10/2

0.4783

Dialysis time, h

4.2 ± 0.4

4.6 ± 0.6

0.0538

Single pool Kt/V urea

1.93 ± 0.27

2.01 ± 0.32

0.5016

Normalized protein catabolism rate, g/kg/day

0.86 ± 0.11

0.89 ± 0.09

0.4212

Geriatric Nutritional Risk Index

92.9 ± 4.2

90.9 ± 9.5

0.5092

Creatinine generation rate, %

93.5 ± 20.8

109.0 ± 26.5

0.1234

 α1 blockers, n (%)

1 (8.3)

2 (16.7)

0.5371

 β1 blockers, n (%)

1 (8.3)

4 (33.3)

0.1316

 Calcium channel blockers, n (%)

6 (50.0)

7 (58.3)

0.6820

 Nitrates, n (%)

0 (0.0)

0 (0.0)

–

 Angiotensin-converting enzyme inhibitors, n (%)

1 (8.3)

2 (16.7)

0.5371

 Angiotensin II receptor blockers, n (%)

2 (16.7)

2 (16.7)

1.0000

 Antiplatelet drugs, n (%)

5 (41.7)

3 (25.0)

0.3865

 Stains, n (%)

1 (8.3)

1 (8.3)

1.0000