Table 2.
Comparative analysis of rollover car crashes (ROCs) with and without ejection.
| ROCs with ejection (Group I = 237) | ROCs without ejection (Group II = 482) | P value | |
|---|---|---|---|
| Age (mean ± SD) | 24.3 ± 10.3 | 29 ± 12.2 | 0.001 |
| Male (%) | 90.7 | 89 | 0.29 |
| Nationality | |||
| Qatari (%) | 54.8 | 34.3 | 0.001 for all |
| Non-Qatari (%) | 45.2 | 65.7 | |
| Position in vehicle | |||
| Driver (%) | 63.2 | 49.6 | 0.001 for all |
| Front passenger (%) | 12 | 17.4 | |
| Back passenger (%) | 9.4 | 18.2 | |
| Unspecified (%) | 15.4 | 14.8 | |
| Mode of transport | |||
| Ambulance (%) | 77 | 83 | 0.003 for all |
| Helicopter (%) | 22.1 | 13.2 | |
| Private vehicle (%) | 0.9 | 2.3 | |
| Private ambulance (%) | 0.0 | 1.5 | |
| Protective devices used | |||
| Seatbelt (%) | 0.0 | 23.4 | 0.001 |
| Airbag (%) | 0.8 | 1.2 | 0.48 |
| Intubation (%) | 57.4 | 18 | 0.001 |
| GCS scene (mean ± SD) | 10.6 ± 5 | 13.7 ± 3.3 | 0.001 |
| ED LOS (hours) (median; range) | 2.6 (<1–50) | 5.7 (<1–77) | 0.001 |
| ED disposition (%) | |||
| ICU | 50.0 | 22.3 | 0.001 for all |
| Operating room | 16.1 | 12.4 | |
| Surgical floor | 23.7 | 59.2 | |
| Died in ED (%) | 10.2 | 4.6 | |
| Transferred | 0 | 1.5 | |
| Associated injuries | |||
| Head (%) | 53.6 | 26.8 | 0.001 |
| Chest (%) | 52.3 | 36.7 | 0.001 |
| Abdomen (%) | 25.7 | 16.6 | 0.003 |
| Spine (%) | 35.9 | 33.6 | 0.30 |
| Pelvis (%) | 25.7 | 11 | 0.001 |
| Upper extremity (%) | 36.7 | 30.3 | 0.05 |
| Lower extremity (%) | 22.4 | 19.9 | 0.25 |
| Head AIS (mean ± SD) | 3.5 ± 1 | 3.3 ± 0.9 | 0.15 |
| Chest AIS (mean ± SD) | 2.9 ± 0.6 | 2.7 ± 0.7 | 0.001 |
| Abdominal AIS (mean ± SD) | 2.7 ± 0.9 | 2.4 ± 0.7 | 0.01 |
| ISS (mean ± SD) | 20.1 ± 11.8 | 12.2 ± 8.9 | 0.001 |
| ICU LOS (days) (median; range) | 6 (1–155) | 3 (1–90) | 0.04 |
| Hospital LOS (days) (median; range) | 8.5 (1–192) | 6 (1–368) | 0.02 |
| Blood transfusion (%) | 33.8 | 11.6 | 0.001 |
| Ethanol mmol/L (mean ± SD) | 34.8 ± 15.5 | 35.5 ± 20.4 | 0.89 |
| Mortality (%) | 24.5 | 6.8 | 0.001 |
GCS: glasgow coma score; ED: emergency department; LOS: length of stay; OR: operation room; ICU: intensive care unit; AIS: abbreviated injury score; ISS: injury severity score.