Table 2. Comparison of injury mechanism, ISS, and RTS.
| Injuries | No. (%) of patients | ||
|---|---|---|---|
| H-HEMS (n = 63) | GEMS (n = 249) | P value | |
| Injury mechanism | 0.971 | ||
| Motor vehicle accident | 30 (47.6) | 120 (48.2) | |
| Pedestrian injury | 3 (4.8) | 9 (3.6) | |
| Fall | 12 (19.0) | 33 (17.7) | |
| Slip down | 4 (6.3) | 41 (9.2) | |
| Penetrating injury | 1 (1.6) | 9 (0.8) | |
| Machinery | 0 (0.0) | 2 (0.4) | |
| Others | 13 (20.6) | 97 (20.1) | |
| ISS | 22.8 ± 6.6 | 23.0 ± 7.4 | 0.857 |
| RTS | 6.98 ± 1.14 | 7.30 ± 1.08 | 0.039 |
Data are shown as mean ± SD or number (%).
ISS = Injury Severity Score, RTS = revised trauma score, H-HEMS = hospital-based helicopter emergency medical services, GEMS = ground ambulance emergency medical services, SD = standard deviation.