Patient characteristics for our sample*
| 11 English hospitals | 6 Australian hospitals | 5 US hospitals | 6 Dutch hospitals | |||||
|---|---|---|---|---|---|---|---|---|
| Emergency | Elective | Emergency | Elective | Emergency | Elective | Emergency | Elective | |
| Mean age, years (SD) | 58.3 (25.8) | 55.3 (20.0) | 58.1 (25.3) | 54.8 (20.2) | 53.9 (21.9) | 54.9 (17.5) | 48.7 (26.9) | 49.1 (22.8) |
| Male admissions (%) | 429 628 (48.5) | 211 384 (47.2) | 211 409 (51.8) | 87 835 (52.5) | 181 122 (42.0) | 144 749 (44.3) | 82 162 (51.3) | 76 468 (49.3) |
| Comorbidity score (SD) | 6.6 (11.1) | 2.4 (6.8) | 7.3 (12.5) | 3.9 (8.9) | 8.6 (14.9) | 4.2 (11.8) | 4.4 (8.7) | 2.2 (5.9) |
*χ2 test, p<0.0001 for country differences by age, gender and comorbidity score.