Table 1 Characteristics of Study Patients
hip fractures N=49,097 | ankle fractures N=10,474 | tibial plateau fractures N=1,594 | Appendectomy N=40,898 | |
|---|---|---|---|---|
Age (mean ± SD) | 80.4 ± 12.1 | 53.9 ± 18.3 | 52.0 ± 16.0 | 40.4 ± 16.5 |
Female | 34,122 (69.5%) | 6,479 (61.9%) | 855 (53.6%) | 20,315 (49.7%) |
Neighbourhood income quintile | ||||
1 (lowest) | 10,718 (21.8%) | 2,130 (20.3%) | 356 (22.3%) | 7,614 (18.6%) |
2 | 9,884 (20.1%) | 2,050 (19.6%) | 324 (20.3%) | 7,780 (19.0%) |
3 | 9,635 (19.6%) | 2,019 (19.3%) | 308 (19.3%) | 7,962 (19.5%) |
4 | 9,549 (19.4%) | 2,205 (21.1%) | 311 (19.5%) | 8,846 (21.6%) |
5 (highest) | 9,041 (18.4%) | 2,020 (19.3%) | 287 (18.0%) | 8,509 (20.8%) |
Living in a rural area | 6,559 (13.4%) | 1,267 (12.1%) | 282 (17.7%) | 4,241 (10.4%) |
Charlson Index (mean ± SD) | 1.7 ± 1.8 | 1.1 ± 1.6 | 1.0 ± 1.6 | 0.5 ± 1.1 |
0 | 6,838 (13.9%) | 1,091 (10.4%) | 173 (10.9%) | 4,717 (11.5%) |
1 | 6,188 (12.6%) | 365 (3.5%) | 48 (3.0%) | 616 (1.5%) |
2 | 3,924 (8.0%) | 253 (2.4%) | 32 (2.0%) | 437 (1.1%) |
3 | 2,570 (5.2%) | 171 (1.6%) | 20 (1.3%) | 131 (0.3%) |
4 | 1,354 (2.8%) | 69 (0.7%) | ≤5 | 53 (0.1%) |
≥5 | 1,812 (3.7%) | 99 (0.9%) | 17 (1.1%) | 100 (0.2%) |
Number of ED visitsa, median (IQR) | 2 (1-3) | 1 (1-2) | 1 (1-2) | 1 (1-2) |
Number of hospitalization daysa, median (IQR) | 10 (5-22) | 5 (3-11) | 4 (2-8) | 3 (2-6) |
Method of entry into hospital: | ||||
From ED | 43,108 (87.8%) | 9,025 (86.2%) | 1,327 (83.2%) | 40,179 (98.2%) |
Direct | 5,989 (12.2%) | 1,449 (13.8%) | 267 (16.8%) | 719 (1.8%) |
Long term care resident | 7,691 (15.7%) | 117 (1.1%) | 8 (0.5%) | 42 (0.1%) |
Community hospital | 35,391 (72.1%) | 7,276 (69.5%) | 824 (51.7%) | 30,440 (74.4%) |
Teaching hospital | 13,706 (27.9%) | 3,198 (30.5%) | 770 (48.3%) | 10,458 (25.6%) |