Parameter estimates using the Lasso method and the corresponding effect on the OR when imputing values with MICE for missing values of TXA1
| Predictor variable | VTE | Pulmonary embolism | Deep vein thrombosis | |||
| Parameter estimate | OR | Parameter estimate | OR | Parameter estimate | OR | |
| Injury type: burn | −0.606 | 0.546 | −0.283 | 0.754 | −0.541 | 0.582 |
| Mechanism of injury: knife/sharp object | 0.402 | 1.495 | 0.000 | – | 2.325 | 10.227 |
| AIS extremities | 0.071 | 1.074 | 0.167 | 1.182 | 0.000 | – |
| Mechanism of injury: plane crash | −0.070 | 0.932 | 0.000 | – | −0.618 | 0.539 |
| Mechanism of injury: MVC | 0.061 | 1.063 | 0.488 | 1.629 | 0.055 | 1.057 |
| Service branch: navy | −0.053 | 0.948 | −0.147 | 0.863 | 0.000 | – |
| Service branch: marine | 0.033 | 1.034 | 0.000 | – | 0.000 | – |
| TXA1 | 0.030 | 1.030 | 0.090 | 1.094 | −0.084 | 0.919 |
| Service branch: air force | 0.029 | 1.029 | 0.000 | – | 0.413 | 1.511 |
| Days in ICU | 0.017 | 1.017 | 0.000 | – | 0.009 | 1.009 |
| Tourniquet | −0.015 | 0.985 | 0.000 | – | −0.253 | 0.776 |
| First 24 hours transfusion: platelets | 0.013 | 1.013 | 0.000 | – | 0.053 | 1.054 |
| Days in hospital | 0.005 | 1.005 | 0.005 | 1.005 | 0.005 | 1.005 |
| AIS abdomen | 0.004 | 1.004 | 0.009 | 1.009 | 0.000 | – |
| First 24 hours transfusion: whole blood | −0.003 | 0.997 | −0.008 | 0.992 | 0.000 | – |
| First 24 hours transfusion: PRBC | 0.000 | – | 0.000 | – | 0.000 | – |
| First 24 hours transfusion: cryoprecipitate | 0.000 | – | 0.000 | – | 0.000 | – |
| First 24 hours transfusion: FFP | 0.000 | – | 0.000 | – | 0.003 | 1.003 |
| Estimated blood loss first 24 hours | 0.000 | – | 0.000 | – | 0.000 | – |
| Age | 0.000 | – | 0.000 | – | 0.000 | – |
| Injury year | 0.000 | – | 0.004 | 1.004 | 0.000 | – |
| Composite ISS | 0.000 | – | 0.000 | – | 0.000 | – |
| Days on ventilator | 0.000 | – | 0.000 | – | 0.000 | – |
| AIS head/neck | 0.000 | – | 0.000 | – | 0.000 | – |
| AIS face | 0.000 | – | 0.000 | – | 0.000 | – |
| AIS chest/thorax | 0.000 | – | 0.000 | – | 0.000 | – |
| AIS skin | 0.000 | – | 0.000 | – | 0.068 | 1.070 |
| Service branch: army | 0.000 | – | 0.000 | – | −0.369 | 0.691 |
| Mechanism of injury: bullet/GSW/firearm | 0.000 | – | 0.000 | – | −0.192 | 0.825 |
| Mechanism of injury: crush | 0.000 | – | 0.000 | – | 0.722 | 2.059 |
| Mechanism of injury: explosive | 0.000 | – | 0.000 | – | 0.000 | – |
| Mechanism of injury: helicopter crash | 0.000 | – | 0.000 | – | 0.000 | – |
| Mechanism of injury: machinery/equipment | 0.000 | – | 0.000 | – | 0.000 | – |
| Mechanism of injury: pedestrian | 0.000 | – | 0.000 | – | 0.000 | – |
The variables are sorted by magnitude of the parameter estimates for VTE.
FFP, fresh frozen plasma; GSW, gun shot wound; ICU, intensive care unit; ISS, injury severity score; MICE, multiple imputation using chained equations; MVC, motor vehicle crash; PRBC, packed red blood cell; VTE, venous thromboembolism.