Table 1.
Clinical characteristics of the study population
| Clinical characteristic | Ultrafiltration (n = 96) | Control (n = 45) |
|---|---|---|
| Age, years | 54.2±12.9 | 54.0±12.1 |
| Men | 63 (65%) | 34 (76%) |
| Race | ||
| White | 12 (13%) | 2 (4%) |
| Black | 81 (84%) | 42 (93%) |
| Other | 3 (3%) | 1 (2%) |
| Predialysis weight, kg | 83.7±19.3 | 84.9±20.5 |
| Postdialysis weight, kg | 80.7±18.7 | 82.1±19.9 |
| Body mass index | 27.3±5.8 | 27.2±6.6 |
| Years of dialysis | 3.9±4.8 | 4.7±6.0 |
| Etiology of end-stage renal disease | ||
| Diabetes mellitus | 37 (38%) | 17 (38%) |
| Hypertension | 46 (47%) | 22 (49%) |
| Glomerulonephritis | 4 (4%) | 1 (2%) |
| Polycystic kidney disease | 3 (3%) | 0 (0%) |
| Other | 6 (6%) | 5 (11%) |
| Current smokers | 31 (32%) | 16 (36%) |
| History of | ||
| Congestive heart failure | 16 (17%) | 3 (7%) |
| Myocardial infarction | 14 (15%) | 5 (11%) |
| Stroke | 9 (9%) | 4 (9%) |
| Urea reduction ratio | 74.3±6.8 | 73.5±6.4 |
| Albumin, g/dl | 3.7±0.5 | 3.7±0.4 |
| Hemoglobin, g/dl | 12.2±1.1 | 12.0±1.3 |
| Presence of edema1 | 18 (19%) | 6 (13%) |
| Number receiving antihypertensive drugs | 83 (86%) | 35 (78%) |
| Number of antihypertensives in users | 2.7±1.4 | 2.6±1.3 |
1
Missing in 2 patients in the ultrafiltration group.