Table 1 Baseline characteristics of patients and univariate Cox proportional analysis for all-cause death
|  | Total (n = 68) | Hazard ratio | p |
|---|---|---|---|
Demographics | |||
 Age (years) | 68.9 ± 9.9 | 1.06 | 0.003* |
 Male, n (%) | 45 (66.2) | 2.03 | 0.08 |
 Body mass index (kg/m2) | 21.1 (19.1–24.3) | 0.95 | 0.30 |
Maintenance hemodialysis data | |||
 Etiology of kidney disease | |||
  Diabetic nephropathy, n (%) | 44 (64.7) | 1.16 | 0.70 |
  Nephrosclerosis, n (%) | 6 (8.8) | 1.74 | 0.33 |
  Others, n (%) | 18 (26.5) | 0.65 | 0.30 |
 Duration of maintenance hemodialysis (months) | 55.5 (27.3–85.5) | 1.00 | 0.95 |
 Frequency (times/week) | 3 (3–3) | NA | NA |
 Each hemodialysis time (hours/day) | 4.0 (4.0–4.0) | 1.05 | 0.88 |
Coexisting/previous conditions, n (%) | |||
 Previous acute pulmonary edema | 24 (35.3) | 1.09 | 0.82 |
 Hypertension | 60 (88.2) | 0.64 | 0.44 |
 Diabetes mellitus | 52 (76.5) | 2.47 | 0.04* |
 Dyslipidemia | 34 (50.0) | 0.97 | 0.94 |
 Current smoking | 10 (14.7) | 0.98 | 0.97 |
 Malignancy | 11 (16.2) | 1.12 | 0.82 |
 Peripheral artery or aortic disease | 21 (30.9) | 2.98 | 0.005* |
 Previous myocardial infarction | 21 (30.9) | 1.00 | 0.99 |
 Previous cerebral infarction | 9 (13.2) | 2.17 | 0.12 |
 Previous cerebral hemorrhage | 4 (5.9) | 1.08 | 0.91 |
Coronary anatomy (n = 50) | |||
 Normal coronary artery, n (%) | 10 (20.0) | 0.87 | 0.80 |
 Left main trunk disease, n (%) | 3 (6.0) | 0.95 | 0.96 |
 Triple vessel disease, n (%) | 10 (20.0) | 1.54 | 0.38 |