Association between patient factors and mortality
| Factor | Group, mean ± SD | p value | |
|---|---|---|---|
| Survivors | Nonsurvivors | ||
| Female sex | 0.16 ± 0.37 | 0.45 ± 0.51 | 0.02 |
| ISS | 11.40 ± 8.00 | 23.20 ± 15.40 | 0.003 |
| Temperature | 36.80 ± 1.00 | 35.80 ± 1.00 | 0.01 |
| INR | 1.30 ± 0.40 | 2.30 ± 1.60 | 0.047 |
| Base deficit | −4.40 ± 4.60 | −11.00 ± 5.00 | < 0.001 |
| GCS | 11.00 ± 5.00 | 7.00 ± 5.00 | 0.001 |
| Battle injury | 0.63 ± 0.48 | 0.40 ± 0.50 | 0.04 |
| Explosive injury | 0.43 ± 0.50 | 0.30 ± 0.47 | 0.25 |
| Heart rate, bpm | 116.00 ± 28.00 | 123.00 ± 46.00 | 0.50 |
| Systolic blood pressure, mm Hg | 116.00 ± 20.00 | 105.00 ± 35.00 | 0.20 |
| Respiratory rate, bpm | 27.00 ± 10.00 | 22.00 ± 8.00 | 0.20 |
| SpO2 | 99.00 ± 3.00 | 92.00 ± 24.00 | 0.25 |
| Hematocrit | 32.00 ± 6.00 | 33.00 ± 10.00 | 0.80 |
| pCO2 | 46.00 ± 34.00 | 52.00 ± 16.00 | 0.20 |
| No. systems injured | 3.90 ± 2.70 | 3.60 ± 2.80 | 0.60 |
bpm = beats or breaths/min; GCS = Glasgow Coma Scale; ISS = injury severity score; INR = international normalized ratio; pCO2 = pressure of carbon dioxide; SD = standard deviation; SpO2 = peripheral capillary oxygen saturation.