Characteristics of Patients With and Without Medical Injury
| Characteristics | Without Medical Injury (n = 484,650) | With Medical Injury (n = 77,666) |
|---|---|---|
| All differences statistically significant at P <.001. | ||
| * Comorbidity index score, with possible range of scores 0.0–33.81; higher score indicates greater comorbidity.13 | ||
| Mean age, years (± SD) | 53.3 ± 24.7 | 59.2 ± 21.4 |
| 0–15, % | 6.1 | 3.9 |
| 16–44, % | 32.0 | 20.4 |
| 45–64, % | 22.0 | 27.4 |
| >65, % | 39.9 | 48.3 |
| Sex, female, % | 60.2 | 54.8 |
| Mean length of stay, days (± SD) | 5.0 ± 5.6 | 8.0 ± 9.5 |
| Comorbidity index, mean (± SD)* | 1.00 ± 1.99 | 1.84 ± 2.61 |
| Number of procedures, % | ||
| 0 | 40.2 | 30.9 |
| 1 | 25.9 | 22.3 |
| 2 | 15.3 | 14.9 |
| 3 | 9.1 | 10.0 |
| 4 | 4.2 | 6.3 |
| 5 | 2.6 | 5.9 |
| 6+ | 2.9 | 9.7 |
| Procedure type, % | ||
| No procedure | 40.2 | 30.9 |
| Operative only | 7.1 | 5.7 |
| Nonoperative only | 41.3 | 42.9 |
| Both | 11.4 | 20.5 |