Table 4.
Logistic regression analysisa
| Non-TBI versus TBI patients | Regression coefficient β | Standard error of the mean | P value | Odds ratio (95% CI) |
|---|---|---|---|---|
| No TBI | ||||
| FFP:pRBC ratio >1:2 | -0.36 | 0.28 | 0.200 | 0.70 (0.04 to 1.21) |
| RISC score | 0.75 | 0.09 | <0.001 | 2.13 (1.77 to 2.56) |
| Emergency operation | 0.09 | 0.30 | 0.759 | 1.10 (0.61 to 1.98) |
| Constant | 0.02 | 0.26 | 0.947 | 1.02 |
| TBI | ||||
| FFP:pRBC ratio >1:2 | -0.73 | 0.27 | 0.006 | 0.48 (0.29 to 0.81) |
| RISC score | 0.56 | 0.07 | <0.001 | 1.75 (1.52 to 2.02) |
| Emergency operation | 0.45 | 0.29 | 0.112 | 1.57 (0.90 to 2.75) |
| Constant | 0.14 | 0.24 | 0.543 | 1.16 |
aTBI, traumatic brain injury; 95% CI, 95% confidence interval; FFP, fresh frozen plasma; pRBC, packed red blood cell; RISC, Revised Injury Severity Classification. Logistic regression analysis was performed with mortality as a dependent variable and FFP:pRBC ratio, RISC score and emergency operations as independent variables according to the presence or absence of TBI.