Table 2.
Comparison of the demographics across patients who experienced adverse events (ie, composite outcome of unplanned ICU admission, mortality or cardiac arrest) in terms of admissions across the development and validation sets, where percentages represent a proportion of number of admissions and SD
| Demographics | OUH development set | OUH validation set | PH validation set |
| No of admissions with at least one adverse event | 3052 | 869 | 9988 |
| No of observations | 13 565 | 3776 | 43 688 |
| Females (%) | 1359 (44.5) | 400 (46.0) | 4717 (47.2) |
| Mean age (SD) | 70.0 (17.5) | 73.8 (16.5) | 76.0 (14.8) |
| 16–25 year olds (%) | 57 (1.9) | 12 (1.4) | 75 (0.8) |
| 26–39 year olds (%) | 172 (5.6) | 35 (4.0) | 215 (2.2) |
| 40–59 year olds (%) | 518 (17.0) | 116 (13.4) | 1042 (10.4) |
| 60–79 year olds (%) | 1189 (39.0) | 302 (34.5) | 3692 (37.0) |
| 80 year olds (%) | 1116 (36.6) | 404 (46.5) | 4964 (49.7) |
ICU, intensive care unit; OUH, Oxford University Hospitals; PH, Portsmouth Hospitals.