Characteristics of the study population before and after service reconfiguration in Greater London and the rest of England
| Greater London | The rest of England | |||||||
| Before | After | Before | After | |||||
| Weekend | Weekday | Weekend | Weekday | Weekend | Weekday | Weekend | Weekday | |
| Total number of admissions | 5237 | 15 281 | 10 187 | 29 202 | 38 750 | 112 807 | 76 026 | 219 679 |
| Number (%) of 7-day in-hospital deaths | 509 (9.7) | 1292 (8.5) | 732 (7.2) | 1939 (6.6) | 4497 (11.6) | 11 350 (10.1) | 6820 (8.9) | 17 134 (7.8) |
| Number (%) of 30-day in-hospital deaths | 946 (18.1) | 2485 (16.3) | 1567 (15.4) | 4057 (13.9) | 7324 (18.9) | 19 344 (17.1) | 13 481 (16.8) | 34 228 (14.8) |
| Age at admission, mean (SD) | 73.3 (15.2) | 73.1 (15.0) | 72.8 (15.2) | 72.3 (15.4) | 75.9 (13.1) | 75.3 (13.3) | 75.5 (13.5) | 74.8 (13.6) |
| Female (%) | 51.0 | 50.1 | 49.8 | 48.6 | 53.3 | 52.2 | 52.0 | 50.7 |
| Index of multiple deprivation quintile | ||||||||
| 1 (least deprived) | 9.8 | 10.8 | 9.9 | 9.9 | 17.4 | 17.6 | 19.9 | 19.8 |
| 2 | 15.2 | 13.7 | 13.9 | 13.5 | 21.8 | 21.3 | 22.6 | 22.4 |
| 3 | 19.2 | 18.0 | 17.7 | 17.9 | 21.9 | 22.0 | 21.5 | 21.4 |
| 4 | 23.2 | 23.7 | 22.6 | 22.8 | 20.7 | 20.9 | 19.6 | 19.6 |
| 5 (most deprived) | 30.9 | 32.0 | 33.8 | 34.0 | 17.7 | 17.8 | 16 | 16.5 |
| 6 (unknown) | 1.7 | 1.8 | 2.1 | 1.9 | 0.5 | 0.4 | 0.4 | 0.3 |
| Charlson index of comorbidity (HES adaptation) | ||||||||
| 0 | 42.3 | 42.5 | 36.7 | 36.8 | 46.4 | 45.7 | 39.3 | 39.1 |
| 1–4 | 16.8 | 15.9 | 15.0 | 14.3 | 14.1 | 14.3 | 13.5 | 13.8 |
| 5–9 | 7.6 | 8.3 | 7.2 | 7.3 | 9.3 | 9.0 | 8.7 | 8.9 |
| 10–14 | 20.2 | 20.2 | 23.9 | 23.9 | 17.9 | 18.2 | 21.0 | 20.8 |
| 15–24 | 9.4 | 8.9 | 11.1 | 11.6 | 8.7 | 9.2 | 11.7 | 11.7 |
| >24 | 3.7 | 4.2 | 6.1 | 6.1 | 3.6 | 3.6 | 5.8 | 5.7 |
| No. of emergency admissions in previous 12 months | ||||||||
| 0 | 68.1 | 67.8 | 66.9 | 66.9 | 68.4 | 68.8 | 68.3 | 69.0 |
| 1 | 18.8 | 19.3 | 18.6 | 18.9 | 19.8 | 19.6 | 19.4 | 18.9 |
| 2 | 6.5 | 6.9 | 7.6 | 7.3 | 6.8 | 6.8 | 6.9 | 6.9 |
| 3 | 6.6 | 6.0 | 6.9 | 6.9 | 5.0 | 4.8 | 5.4 | 5.2 |
| Stroke diagnosis | ||||||||
| I61 | 15.5 | 14.8 | 16.0 | 15.2 | 12.9 | 12.7 | 12.9 | 12.5 |
| I63 | 67.0 | 66.8 | 74.9 | 75.0 | 64.1 | 64.4 | 74.7 | 74.4 |
| I64 | 17.5 | 18.4 | 9.1 | 9.8 | 23.0 | 22.9 | 12.4 | 13.1 |
| Admitted from home | 85.8 | 84.7 | 86.4 | 86.8 | 93.6 | 93.9 | 93.0 | 93.6 |
| Ethnic group | ||||||||
| White | 69.1 | 69.8 | 60.4 | 61.3 | 87.9 | 87.8 | 89.9 | 89.8 |
| Non-white | 30.1 | 30.2 | 39.6 | 38.7 | 12.1 | 12.2 | 10.1 | 10.2 |
HES, Hospital Episode Statistics.