Table 2.
Baseline Characteristics for Patients with AIS Head ≤2
| LR (n = 65) | NS (n = 418) | P value | |
|---|---|---|---|
| ISS | 26 (17–35) | 19 (13–29) | <0.001 |
| AIS head | 0 (0–1) | 0 (0–0) | <0.001 |
| AIS chest | 3 (0–4) | 3 (0–3) | 0.831 |
| AIS abdomen | 2 (0–4) | 2 (0–4) | 0.656 |
| AIS extremity | 3 (0–4) | 2 (0–3) | <0.001 |
| Age (year) | 41.1 ± 20.1 | 38.8 ± 17.8 | 0.492 |
| Sex (% male) | 73.8 | 77.3 | 0.543 |
| Mechanism | |||
| Blunt (%) | 56.9 | 56.5 | 0.944 |
| Penetrating (%) | 43.1 | 43.5 | – |
| Pre-hospital intubation (%) | 70.8 | 20.7 | <0.001 |
| Pre-hospital transport time (min) | 57 ± 34 | 51 ± 29 | 0.283 |
| Pre-hospital fluid volume (mL) | 1520 ± 1280 | 890 ± 650 | <0.001 |
AIS, Abbreviated Injury Scale; ISS, Injury Severity Score; LR, lactated Ringer's; NS, normal saline.