Demographics and comparisons of successful discharge and return to the emergency department (ED)
| Total study (n=233) | Return ED– (n=205) | Return ED+ (n=28) | P | |
| Male | 64% | 65% | 57% | 0.394 |
| Age | 53 (43–62) | 54 (44–63) | 49.5 (38–57) | 0.133 |
| FVC (mL) | 2500 (1900–3200) | 2550 (1950–3270) | 2300 (1735–2600) | 0.074 |
| ED LOS (minutes) | 232 (180–301) | 232 (182–299) | 225 (154–330) | 0.900 |
| Rib fractures | 2 (1–3) | 2 (1–2) | 2 (1–3.5) | 0.217 |
| Pulmonary contusion | 1.7% | 1.5% | 3.6% | 0.403 |
| MVC | 11.2% | 11.7% | 7.1% | 0.749 |
| MCC | 3.9% | 3.4% | 7.1% | 0.295 |
| Fall | 60.9% | 62.0% | 53.6% | 0.394 |
| Assault | 11.6% | 10.2% | 22.2% | 0.109 |
Categorical variables are presented as percentages. Continuous variables are presented as median (IQR).
FVC, forced vital capacity; LOS, length of stay; MCC, motorcycle collision; MVC, motor vehicle collision.