Table 4. Hierarchical logistic regression analysis for multiple-RTI patients.
| Parameter | Estimate | P-value | OR | 95% Wald Confidence Limits | |
|---|---|---|---|---|---|
| lower | upper | ||||
| x1 age (ref: ≥65y) | |||||
| x1-1 0-14y | -0.101 | 0.853 | 1.106 | 0.379 | 3.226 |
| x1-2 15-24y | 1.477 | <0.001 | 0.228 | 0.110 | 0.473 |
| x1-3 25-34y | 0.570 | 0.034 | 0.566 | 0.334 | 0.956 |
| x1-4 35-44y | 0.515 | 0.045 | 0.598 | 0.361 | 0.989 |
| x1-5 45-54y | 0.694 | 0.003 | 0.500 | 0.318 | 0.786 |
| x1-6 55-64y | 0.672 | 0.003 | 0.511 | 0.327 | 0.798 |
| x2 admission pathway (ref: ED admission*) | |||||
| x2-1 non-local referral* | 0.390 | 0.108 | 0.677 | 0.421 | 1.088 |
| x2-2 local referral* | 0.742 | <0.001 | 0.476 | 0.314 | 0.723 |
| x3 prehospital time (ref: >24h) | |||||
| x3-1 ≤1h | 1.066 | 0.007 | 0.344 | 0.158 | 0.751 |
| x3-2 1-3h | 0.524 | 0.064 | 0.592 | 0.340 | 1.031 |
| x3-3 3-24h | 0.318 | 0.124 | 0.728 | 0.485 | 1.092 |
| x4 LOS (ref: ≥31d) | |||||
| x4-1 ≤3d | -3.667 | <0.001 | 39.134 | 17.418 | 87.925 |
| x4-2 4-7d | -1.333 | <0.001 | 3.792 | 2.256 | 6.375 |
| x4-3 8-14d | -0.683 | 0.004 | 1.980 | 1.244 | 3.150 |
| x4-4 15-30d | -0.618 | 0.005 | 1.855 | 1.210 | 2.844 |
| x5 number of body region (ref: 7) | |||||
| x5-1 2 | 20.643 | <0.001 | 1.084E-09 | 2.632E-10 | 4.461E-09 |
| x5-2 3 | 20.841 | <0.001 | 8.889E-10 | 2.433E-10 | 3.247E-09 |
| x5-3 4 | 20.925 | <0.001 | 8.173E-10 | 2.322E-10 | 2.877E-09 |
| x5-5 5 | 21.238 | <0.001 | 5.977E-10 | 1.592E-10 | 2.244E-09 |
| x5-6 6 | 20.354 | – | – | – | – |
| x6 head (ref: yes) | 0.133 | 0.569 | 0.875 | 0.555 | 1.382 |
| x7 thorax (ref: yes) | 0.545 | 0.010 | 0.580 | 0.383 | 0.877 |
| x8 abdomen (ref: yes) | 0.248 | 0.446 | 0.780 | 0.413 | 1.476 |
| x9 upper limb (ref: yes) | 0.026 | 0.888 | 0.974 | 0.679 | 1.397 |
| x10 lower limb (ref: yes) | 0.111 | 0.563 | 0.895 | 0.615 | 1.301 |
| x11 FJI* (ref: yes) | -0.393 | 0.171 | 1.481 | 0.844 | 2.600 |
| x12 SSTI* (ref: yes) | 0.229 | 0.222 | 0.795 | 0.550 | 1.150 |
| x13 CNSI* (ref: yes) | 0.538 | 0.004 | 0.584 | 0.406 | 0.839 |
| x14 PC* (ref: yes) | -0.180 | 0.392 | 1.197 | 0.792 | 1.810 |
| x15 TOI* (ref: yes) | 0.811 | 0.016 | 0.444 | 0.229 | 0.862 |
| x16 DC* (ref: yes) | 0.385 | 0.021 | 0.680 | 0.491 | 0.942 |
| x17 apnea (ref: yes) | 1.556 | 0.218 | 0.211 | 0.018 | 2.508 |
| x18 CA* (ref: yes) | 0.239 | 0.848 | 0.787 | 0.069 | 8.965 |
| x19 CH* (ref: yes) | 2.601 | 0.099 | 0.074 | 0.003 | 1.635 |
| x20 WED* (ref: yes) | 0.876 | 0.059 | 0.416 | 0.168 | 1.034 |
| x21 ABI* (ref: yes) | -0.045 | 0.963 | 1.046 | 0.156 | 7.030 |
| x22 ARF* (ref: yes) | 0.623 | 0.281 | 0.536 | 0.173 | 1.665 |
| x23 MODS* (ref: yes) | 1.539 | 0.003 | 0.215 | 0.078 | 0.591 |
| x24 BI* (ref: yes) | 0.315 | 0.177 | 0.730 | 0.462 | 1.152 |
| x25 ISS* (ref: ≥25) | |||||
| x25-1 1–8 | 0.985 | 0.001 | 0.373 | 0.204 | 0.684 |
| x25-2 9–15 | 0.341 | 0.145 | 0.711 | 0.449 | 1.125 |
| x25-1 16–24 | 0.220 | 0.299 | 0.803 | 0.530 | 1.216 |
| x26 coma (ref: yes) | 0.674 | 0.015 | 0.510 | 0.296 | 0.877 |
* ED admission: emergency department admission; non-local referral: referral from hospitals in other cities; local referral: referral from hospitals in Shanghai; FJI: fracture and joint injuries; SSTI: skin and soft tissue injuries; CNSI: central nervous system injuries; PC: pulmonary contusion; TOI: traumatic organ injuries; DC: disturbance of consciousness; CA: cardiac arrest; CH: cerebral hernia; WED: water and electrolyte disturbance; ABI: acid-Base imbalance; ARF: acute renal failure; MODS: multiple organ dysfunction syndrome; BI: bacterial infection; ISS: injury severity score.