Table 1.
Baseline characteristics of patients depending on survival
| Characteristics | All patients (n = 357) | Patients who survived (n = 193) | Patients who died (n = 164) | P-value |
|---|---|---|---|---|
| Age (year) | 74.9 (65.0–81.7) | 72.6 (60.0–79.3) | 77.8 (72.0–83.0) | <0.001 |
| Gender (% female) | 36.7 | 38.3 | 34.8 | 0.5 |
| Observed pre-dialysis values | ||||
| SBP (mmHg) | 150.8 ± 1.7 | 155.3 ± 2.2 | 145.6 ± 2.5 | 0.004 |
| DBP (mmHg) | 71.0 ± 0.9 | 73.5 ± 1.2 | 68.1 ± 1.3 | 0.003 |
| BW (kg) | 71.1 (61.8–82.2) | 71.1 (61.8–82.1) | 71.2 (61.8–82.2) | 0.9 |
| BMI (kg/m2) | 27.0 ± 0.4 | 27.4 ± 0.5 | 26.5 ± 0.6 | 0.3 |
| Initial renal disease (%) | 0.004 | |||
| Glomerulonephritis | 19.1 | 23.3 | 14.0 | |
| Diabetic nephropathy | 13.5 | 8.3 | 19.5 | |
| Other | 67.4 | 68.4 | 66.5 | |
| Blood laboratory values | ||||
| Albumin (g/L) | 34.8 ± 0.7 | 34.7 ± 0.9 | 35.0 ± 1.1 | 0.8 |
| CRP (mg/L) | 7.0 (3.0–18.5) | 7.8 (2.7–15.9) | 7.0 (3.0–22.7) | 0.6 |
| Comorbidities (%) | ||||
| Hypertension | 87.0 | 90.9 | 82.6 | 0.02 |
| Diabetes | 39.7 | 40.6 | 38.5 | 0.7 |
| Coronary disease | 37.4 | 31.0 | 44.7 | 0.008 |
| Peripheral vascular disease | 33.9 | 26.2 | 42.9 | 0.001 |
| Dysrhythmia | 26.2 | 17.7 | 36.0 | <0.001 |
| Congestive heart failure | 21.3 | 16.0 | 27.3 | 0.01 |
| Chronic respiratory disease | 16.4 | 11.8 | 21.7 | 0.01 |
| Active malignancy | 11.8 | 10.7 | 13.0 | 0.5 |
| Myocardial infarction | 9.8 | 8.6 | 11.2 | 0.4 |
| Cerebrovascular disease | 8.9 | 9.1 | 8.7 | 0.9 |
| Smoking (%) | 0.2 | |||
| Current | 6.0 | 4.3 | 8.1 | |
| Former | 24.1 | 22.5 | 26.1 | |
| Non-smoker | 69.8 | 73.3 | 65.8 | |
| Antihypertensive therapies (%) | 25.5 | 27.1 | 23.6 | 0.4 |
| First dialysis in emergency (%) | 29.9 | 25.1 | 35.6 | 0.03 |
| Vascular access (%) | <0.001 | |||
| Catheter | 37.3 | 34.7 | 40.2 | |
| Arteriovenous fistula | 40.9 | 52.9 | 26.8 | |
| Other | 21.9 | 12.4 | 32.9 | |
Mean ± standard error of the mean (SEM) or median (IQR). P-values are for the comparison between patients who survived and patients who died.
The first observations available within the first week on dialysis were considered baseline values. The sample size was 294 for SBP, DBP and BW, 90 for albumin and 63 for CRP. Prescription of antihypertensive therapies within the first 3 months was considered.
CRP, C reactive protein.