Baseline characteristics of the study population
| Characteristic | Total (n=12 317) |
| Age (years, median (IQR)) | 60 (41–73) |
| Female, n (%) | 5847 (47.5) |
| Chief complaint*, n (%) | |
| Stomach aches | 1313 (10.7) |
| General malaise | 1143 (9.3) |
| Shortness of breath | 757 (6.1) |
| Chest pain | 670 (5.4) |
| Neurological deficit | 601 (4.9) |
| ED length of stay (hours, median (IQR)) | 3.8 (2.6–5.3) |
| Admitted, n (%) | 5004 (40.6) |
| 30-day mortality, n (%) | 476 (3.9) |
*Only complaints with a frequency over 500 are presented.