Baseline characteristics of the study population
| Total population (N=53 829) (100%) | No comorbidity (n=43 239) (78%) | Non-complex comorbidity (n=5053) (9%) | Complex comorbidity n=5537 (10%) | |
| Hospital, n (%) | ||||
| Erasmus MC | 18 024 (34) | 11 150(26) | 2821 (56) | 4053 (73) |
| St Mary’s Hospital | 15 556 (28) | 13 809 (32) | 1218 (24) | 529 (10) |
| General Hospital Vienna | 21 249 (38) | 18 280(42) | 1014 (20) | 955 (17) |
| Age | ||||
| Median (IQR) | 4.0 (1.5–8.9) | 3.7 (1.4–8.5) | 5.7 (2.1–10.9) | 5.0 (1.7–9.7) |
| Sex, n (%) | ||||
| Female | 24 041 (45) | 19 594 (45) | 2109 (42) | 2338 (42) |
| Triage urgency, n (%) | ||||
| Emergent/very urgent | 5116 (10) | 3482 (8) | 801 (16) | 833 (15) |
| Urgent | 16 557 (31) | 11 944 (28) | 1914 (38) | 2699 (49) |
| Standard/non-urgent | 32 156 (60) | 27 813 (64) | 2338 (46) | 2005 (36) |
| Disposition, n (%) | ||||
| ICU or mortality at the ED | 537 (1) | 232 (0.5) | 116 (2.3) | 189 (3.4) |
| Hospital admission | 6416 (12) | 3834 (8.9) | 1005 (20) | 1577 (28) |
| Discharge/other | 46 876 (87) | 39 173 (91) | 3932 (78) | 3771 (68) |
ED, emergency department; ICU, intensive care unit.