Table 1.
Patients' characteristics
| Characteristic | n (%) |
| Gender | |
| Females | 63 920 (79.1) |
| Males | 16 880 (20.9) |
| Age, years | |
| 60–69 | 5523 (6.8) |
| 70–79 | 18 618 (23.0) |
| 80–89 | 37 362 (46.2) |
| ≥90 | 19 297 (23.9) |
| Treatment | |
| Surgical | 66 893 (82.8) |
| Conservative | 13 907 (17.2) |
| Hospital size (number of acute beds) | |
| ≤199 | 11 243 (13.9) |
| 200–399 | 32 613 (40.4) |
| 400–599 | 23 125 (28.6) |
| ≥600 | 12 099 (15.0) |
| Comorbidities | |
| Malignancy | 4753 (5.7) |
| Diabetes mellitus | 10 795 (13.4) |
| Cardiovascular disease | 6147 (7.6) |
| Cerebrovascular disease | 6438 (8.0) |
| Lung disease | 5179 (6.4) |
| Renal failure | 3554 (4.4) |
| Hepatic failure | 646 (0.8) |
| Number of comorbidities | |
| 0 | 51 544 (63.8) |
| 1 | 22 170 (27.4) |
| ≥2 | 7086 (8.8) |