Baseline demographics of the patients
| Characteristic | Neuroscience ICU (n=341) | Trauma ICU (n=207) | P value |
| Median age, years (IQR) | 57 (34, 73) | 44 (28, 61) | <0.001 |
| Male gender | 68% | 73% | 0.252 |
| High-speed mechanism | 34% | 71% | <0.001 |
| Transfer | 46% | 19% | <0.001 |
| Comorbidities | 22% | 13% | 0.007 |
| Preinjury anticoagulant use | 7% | 2% | 0.010 |
| Median head AIS score (IQR) | 3 (2, 4) | 3 (3, 4) | 0.471 |
| Median ISS (IQR) | 16 (10, 24) | 25 (17, 34) | <0.001 |
AIS, Abbreviated Injury Scale; ICU, intensive care unit; ISS, Injury Severity Score.