Table 1.
Patient characteristics and mortality
| In-hospital mortality |
30-day mortality |
|||||
|---|---|---|---|---|---|---|
| Alive | Dead | p-value | Alive | Dead | p-value | |
| n | 36,326 | 1,694 | NA | 34,210 | 3,810 | NA |
| Women, n (%) | 26,959 (74.2) | 969 (57.2) | < 0.001 | 25,671 (75.0) | 2,257 (59.2) | < 0.001 |
| Age, years a | 82.5 (7.7) | 86.2 (7.2) | < 0.001 | 82.3 (7.6) | 86.1 (7.4) | < 0.001 |
| Length of stay (days) b | 9 (2–23) | 6 (2–20) | < 0.001 | 9 (2–23) | 5 (2–18) | < 0.001 |
| Time to operation, hours b | 22.1 (4.5–64.4) | 24.5 (4.6–74.8) | < 0.001 | 22.1 (4.5–64.4) | 23 (4.5–69.9) | 0.003 |
| ASA, n (%) | < 0.001 | < 0.001 | ||||
| ASA 1 | 3,591 (9.9) | 47 (2.8) | 3,529 (10.3) | 109 (2.9) | ||
| ASA 2 | 19,068 (52.5) | 514 (30.3) | 18,334 (53.6) | 1,248 (32.8) | ||
| ASA 3 | 12,054 (33.2) | 831 (49.1) | 11,025 (32.2) | 1,860 (48.8) | ||
| ASA 4 | 1,594 (4.4) | 290 (17.1) | 1,309 (3.8) | 575 (15.1) | ||
| ASA 5 | 19 (0.1) | 12 (0.7) | 13 (0.04) | 18 (0.5) | ||
| Type of fracture, n (%) | < 0.001 | < 0.001 | ||||
| Femoral neck fracture | 18,783 (51.7) | 766 (45.2) | 17,847 (52.2) | 1,702 (44.7) | ||
| Pertrochanteric fracture | 14,975 (41.2) | 781 (46.1) | 13,976 (40.9) | 1,780 (46.7) | ||
| Subtrochanteric fracture | 2,568 (7.1) | 147 (8.7) | 2,387 (7.0) | 328 (8.6) | ||
a Values are mean (SD).
b Values are median (range).
ASA score, 1–5: ASA 1, normal healthy patient; ASA 2, mild systemic disease; ASA 3, severe systemic disease; ASA 4, severe systemic disease that is a constant threat to life; ASA 5, a moribund patient who is not expected to survive more than 24 h with or without an operation.
NA: not applicable.