Demographics and clinical features at presentation
| Variable | Died (%) | Discharged (%) | Total (%) |
| Admission hospital | 2508 | ||
| A | 174 (40.6) | 255 (59.4) | 429 (17.1) |
| B | 165 (38.9) | 259 (61.1) | 424 (16.9) |
| C | 96 (39.8) | 145 (60.2) | 241 (9.6) |
| D | 78 (32.9) | 159 (67.1) | 237 (9.4) |
| E | 97 (42.9) | 129 (57.1) | 226 (9.0) |
| F | 46 (27.1) | 124 (72.9) | 170 (6.8) |
| G | 35 (22.4) | 121 (77.6) | 156 (6.2) |
| H | 48 (33.3) | 96 (66.7) | 144 (5.7) |
| I | 19 (22.6) | 65 (77.4) | 84 (3.3) |
| J | 22 (27.2) | 59 (72.8) | 81 (3.2) |
| K | 35 (43.2) | 46 (56.8) | 81 (3.2) |
| L | 24 (32.0) | 51 (68.0) | 75 (3.0) |
| M | 14 (21.2) | 52 (78.8) | 66 (2.6) |
| N | 24 (38.7) | 38 (61.3) | 62 (2.5) |
| O | 6 (25.0) | 18 (75.0) | 24 (1.0) |
| P* | 2 (25.0) | 6 (75.0) | 8 (0.3) |
| Age group (years) | |||
| <65 | 115 (14.7) | 667 (85.3) | 782 (31.2) |
| 65–75 | 305 (44.4) | 382 (55.6) | 687 (27.4) |
| 75–85 | 273 (50.6) | 267 (49.4) | 540 (21.5) |
| >85 | 192 (38.5) | 307 (61.5) | 499 (19.9) |
| Sex | |||
| Female | 377 (32.9) | 768 (67.1) | 1145 (45.7) |
| Male | 508 (37.3) | 855 (62.7) | 1363 (54.3) |
| Median comorbidity count (IQR) | 3 (2–4) | 2 (0.5–3.5) | 2 (0.5–3.5) |
| Supplementary fields | |||
| WIMD† | |||
| Q1—most deprived | 265 (33.9) | 517 (66.2) | 782 (31.2) |
| Q2 | 251 (38.0) | 409 (62.0) | 660 (26.3) |
| Q3 | 163 (34.5) | 310 (65.5) | 473 (18.9) |
| Q4—least deprived | 168 (35.7) | 302 (64.3) | 470 (18.7) |
| WIMD unrecorded | 38 (30.9) | 85 (69.1) | 123 (4.9) |
| CFS score | |||
| 1—very fit | 21 (12.8) | 143 (87.2) | 164 (6.5) |
| 2—fit | 32 (16.1) | 167 (83.9) | 199 (7.9) |
| 3—managing well | 47 (27.3) | 125 (72.7) | 172 (6.9) |
| 4—vulnerable | 63 (39.9) | 95 (60.1) | 158 (6.3) |
| 5—mildly frail | 70 (52.6) | 63 (47.4) | 133 (5.3) |
| 6—frail | 117 (49.6) | 119 (50.4) | 236 (9.4) |
| 7—severely frail | 87 (50.0) | 87 (50.0) | 174 (6.9) |
| 8—very severely frail | 36 (62.1) | 22 (37.9) | 58 (2.3) |
| 9—terminally ill | 7 (63.6) | 4 (36.4) | 11 (0.4) |
| CFS score unrecorded | 405 (33.7) | 798 (66.3) | 1203 (48.0) |
| Ceiling of care | |||
| Intensive care | 102 (30.0) | 238 (70.0) | 340 (13.6) |
| Ward (CPAP) | 98 (42.2) | 134 (57.8) | 232 (9.2) |
| Ward (no CPAP) | 572 (41.2) | 817 (58.8) | 1389 (55.4) |
| Ceiling of care unrecorded | 113 (20.7) | 434 (79.3) | 547 (21.8) |
*Represents three combined centres (<5 patients each).
†WIMD, 1=most deprived, 1909=least deprived.
CFS, Clinical Frailty Scale; CPAP, continuous positive airway pressure; WIMD, Welsh Index of Multiple Deprivation.