Table 2 Patient background
| Â | 2009 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | P value |
|---|---|---|---|---|---|---|---|---|
Number of patients | 89 | 131 | 164 | 190 | 181 | 215 | 224 | Â |
Men/women | 62 (69.7)/27 (30.3) | 89 (67.9)/42 (32.1) | 102 (62.2)/62 (37.8) | 125 (65.8)/65 (34.2) | 113 (62.4)/68 (37.6) | 136 (63.3)/79 (36.7) | 140 (62.5)/84 (37.5) | 0.801* |
Median age (IQR), years | 68 (61.0–76.5) | 71 (64.0–77.0) | 71 (65.0–78.0) | 72 (65.0–78.0) | 72 (65.0–79.0) | 71 (66.0–78.0) | 72 (66.0–79.0) | 0.127** |
Median duration of HD (IQR), months | 63 (29.0–98.0) | 75 (27.0–137.0) | 68.5 (32.0–136.5) | 60 (31.5–119.3) | 65 (34.0–142.0) | 71 (32.0–136.0) | 77 (33.0–151.0) | 0.402** |
Primary cause of CKD | ||||||||
 Diabetes mellitus | 41 (46.1) | 65 (49.6) | 78 (47.6) | 94 (49.5) | 84 (46.4) | 98 (45.6) | 106 (47.3) |  |
 Chronic glomerulonephritis | 24 (27.0) | 35 (26.7) | 41 (25.0) | 41 (21.6) | 41 (22.7) | 50 (23.3) | 42 (18.8) |  |
 Nephrosclerosis | 6 (6.7) | 8 (6.1) | 20 (12.2) | 20 (10.5) | 22 (12.2) | 26 (12.1) | 34 (15.2) | 0.787* |
 Other | 6 (6.7) | 8 (6.1) | 9 (5.5) | 15 (7.9) | 17 (9.4) | 22 (10.2) | 21 (9.4) |  |
 Unknown | 12 (13.5) | 15 (11.5) | 16 (9.8) | 20 (10.5) | 17 (9.4) | 19 (8.8) | 21 (9.4) |  |
Dialysis method | ||||||||
 HD | 89 (100) | 121 (93.8) | 142 (86.6) | 137 (72.1) | 103 (56.9) | 92 (42.8) | 78 (34.8) | < 0.001* |
 OHDF | 0 (0) | 8 (6.2) | 18 (11.0) | 47 (24.7) | 75 (41.4) | 113 (52.6) | 129 (57.6) | |
 I-HDF | 0 (0) | 0 (0) | 4 (2.4) | 6 (3.2) | 3 (1.7) | 10 (4.7) | 17 (7.6) | |
PMMA membrane dialyzer | 4 (4.5) | 17 (13.0) | 42 (25.6) | 45 (23.7) | 36 (19.9) | 45 (20.9) | 33 (14.7) | < 0.001* |
Median spKt/Vurea [IQR] | 1.6 [1.4, 1.8] | 1.6 [1.4, 1.8] | 1.7 [1.4, 1.9] | 1.6 [1.5, 1.8] | 1.7 [1.5, 1.8] | 1.7 [1.5, 1.8] | 1.7 [1.5, 1.9] | < 0.01** |