Characteristics of hospital audit population
| All | Planned | Unplanned | Exclusions | |
| N (%) | 999 (100) | 463 (46.4) | 292 (29.2) | 244 (24.4) |
| Gender | ||||
| Male | 626 (62.7) | 272 (58.7) | 193 (66.1) | 161 (66.0) |
| Female | 373 (37.3) | 191 (41.3) | 99 (33.9) | 83 (34.0) |
| Mean (SD) age, years | 57.3 (15.4) | 57.9 (14.9) | 55.1 (15.6) | 58.9 (16.0) |
| Ethnicity | ||||
| White | 268 (26.8) | 125 (27.0) | 78 (26.7) | 65 (26.6) |
| South Asian | 233 (23.3) | 121 (26.1) | 66 (22.6) | 46 (18.9) |
| Black | 154 (15.4) | 75 (16.2) | 39 (13.4) | 40 (16.4) |
| Other | 197 (19.7) | 88 (19.0) | 67 (22.9) | 42 (17.2) |
| Unknown * | 147 (14.7) | 54 (11.7) | 42 (14.4) | 51 (20.9) |
| Deceased | ||||
| Over all follow-up | 217 (21.7) | 69 (14.9) | 75 (25.7) | 73 (29.9) |
| Within 90 days RRT | 59 (5.9) | 13 (2.8) | 12 (4.1) | 34 (13.9) |
| Inpatient at RRT start | ||||
| No | 440 (44.0) | 356 (76.9) | 75 (25.7) | 9 (3.7) |
| Yes | 433 (43.3) | 106 (22.9) | 213 (72.9) | 114 (46.7) |
| Unknown | 126 (12.6) | 1 (0.2) | 4 (1.4) | 121 (49.6) |
| Modality | ||||
| HD | 728 (72.9) | 279 (60.3) | 231 (79.1) | 219 (89.8) |
| PD | 270 (27.0) | 184 (39.7) | 61 (20.9) | 25 (10.2) |
| Access | ||||
| CVC | 277 (27.7) | 43 (9.3) | 118 (40.4) | 116 (47.5) |
| Tunnelled line | 249 (24.9) | 103 (22.2) | 117 (40.1) | 29 (11.9) |
| AVF/AVG | 150 (15.0) | 132 (28.5) | 3 (1.0) | 15 (6.1) |
| Tenckhoff | 210 (21.0) | 152 (32.8) | 53 (18.2) | 5 (2.0) |
| Moncrief | 35 (3.5) | 33 (7.1) | 1 (0.3) | 1 (0.4) |
| Missing data | 78 (7.8) | 0 | 0 | 78 (32.0) |
| Diagnosis from hospital record at RRT | ||||
| Diabetes | 287 (28.7) | 134 (28.9) | 90 (30.8) | 63 (25.8) |
| IgA nephropathy | 47 (4.7) | 24 (5.2) | 16 (5.5) | 7 (2.9) |
| Hypertension | 46 (4.6) | 23 (5.0) | 15 (5.1) | 8 (3.3) |
| Polycystic kidney | 34 (3.4) | 15 (3.2) | 6 (2.1) | 13 (5.3) |
| Glomerulonephritis | 26 (2.6) | 14 (3.0) | 5 (1.7) | 7 (2.9) |
| Missing data | 297 (29.7) | 117 (25.3) | 79 (27.1) | 101 (41.4) |
| Acute kidney injury identified from hospital record | 196 | 1 | 72 | 123 |
| eGFR at RRT start | ||||
| Median (IQR) | 8 (4) | 8 (4) | 8 (4) | 8 (5) |
| Missing data | 20 (2.0) | 5 (1.1) | 7 (2.4) | 8 (3.3) |
↵*Unknown ethnic group=not stated or missing.
AVF, arteriovenous fistula; AVG, arteriovenous graft; CVC, central venous catheter; eGFR, estimated glomerular filtration rate; HD, haemodialysis; PD, peritoneal dialysis; RRT, renal replacement therapy.