Table 1 Baseline characteristics of the study population
Variables | Overall | Males | Females | |
|---|---|---|---|---|
N (%) | 144 (100) | 91 (63.2) | 53 (36.8) | |
Mean age, year, (SD) | 49.2 (14.1) | 50 (14) | 48 (15) | |
Age, min-max, year | 15–74 | 22–74 | 15–74 | |
Underlying nephropathy, n (%) | Hypertensive nephropathy | 36 (25) | 28 (19.4) | 8 (5.6) |
Unknown | 27 (18.8) | 13 (9) | 14 (9.7) | |
Diabetic nephropathy | 22 (15.3) | 18 (12.5) | 4 (2.8.) | |
Chronic glomerulonephritis | 23 (16) | 16 (11.1) | 7 (4.9) | |
Chronic interstitial nephropathy | 8 (5.6) | 8 (5.6) | 0 (0) | |
Gout nephropathy | 7 (4.9) | 0 (0) | 7 (4.9) | |
Polycystic kidneys | 7 (4.9) | 1 (0.7) | 6 (4.2) | |
Hypertension and diabetes | 6 (4.2) | 4 (2.8.) | 2 (1.4) | |
HIV associated nephropathy | 6 (4.2) | 3 (2.1) | 3 (2.1) | |
Hepatitis C nephropathy | 1 (0.7) | 1 (0.7) | 0 (0) | |
Focal and segmental hyalinosis | 1 (0.7) | 0 (0) | 1 (0.7) | |
Comorbidities, n (%) | Hypertension | 128 (88.9) | 84 (58.3) | 44 (30.6) |
Hyperuricemia | 118 (81.9) | 71 (40.9) | 47 (32.6) | |
Excess weight | 47 (32.6%) | 30 (20.8) | 17 (11.8) | |
Diabetes | 33 (22.9) | 23 (16) | 10 (6.9) | |
Cardiopathies | 24 (16.7) | 17 (11.8) | 7 (4.9) | |
Past history of cerebral stroke | 12 (8.4) | 9 (6.3) | 3 (2.1) | |
Hepatitis C | 18 (12.5) | 12 (8.3) | 6 (4.2) | |
HIV | 7 (4.9) | 3 (2.1) | 4 (2.8) | |
Hepatitis B | 3 (2.1) | 3 (2.1) | 0 (0) | |
Past history of gout | 16 (11.1) | 14 (9.7) | 2 (1.4) | |
Tobacco consumption | 4 (2.8) | 4 (2.8) | 0 (0) | |
Mean BMI, Kg/m2 (SD) | 23.8 (3.6) | 23.6 (2.7) | 24.1 (4.9) | |
Residual diuresis, n (%) | < 100 mL/24 h | 91 (63.2) | 61 (42.4) | 30 (20.8) |
≥100 mL/24 h | 53 (36.8) | 30 (20.8) | 23 (16) | |
Median time on HD replacement [Q25-Q75], year | 3 [1; 6] | 3 [1; 6] | 2 [1; 5] | |
Interval between dialytic sessions, n (%) | < 3 days | 24 (16.7) | 15 (10.4%) | 9 (6.3%) |
≥3 days | 120 (83.3) | 76 (52.8%) | 44 (30.6%) | |
Vascular access, n (%) | Fistula | 124 (86.1) | 79 (54.9) | 45 (31.3) |
Catheter | 20 (13.9) | 12 (8.3) | 8 (5.6) | |
Size of the dialysis membrane, n (%) | FX10 | 105 (72.9) | 73 (50.7) | 32 (22.2) |
FX8 | 37 (25.7) | 17 (11.8) | 20 (13.9) | |
FX5 | 2 (1.4) | 1 (0.7) | 1 (0.7) | |
Blood efflux, n (%), | < 300 ml/min | 75 (52.1) | 43 (29.9) | 32 (22.2) |
≥300 ml/min | 69 (47.9) | 48 (33.3) | 21 (14.6) | |
Mean Kt/VUrea (SD) | 1.3 (0.2) | 1.2 (0.2) | 1.5 (0.2) | |