Demographic data by the number of uncrossmatched units received in 24-hour survivors
| ≤2 units | >2 units | P values | |
| Patients (n) | 29 | 87 | |
| Age, mean (SD) | 50 (17) | 47 (18) | 0.365 |
| Female | 12 (41.4%) | 35 (40.2%) | 1.000 |
| Penetrating | 2 (6.9%) | 17 (19.5%) | 0.151 |
| Trauma etiology (%) | 24 (82.8%) | 80 (92.0%) | 0.171 |
| Abdominal aortic aneurysms | 0 | 2 | |
| Medical anemia | 2 | 0 | |
| Ear, nose and throat-related | 1 | 0 | |
| Gastrointestinal bleeds | 1 | 3 | |
| Gynecology-related | 1 | 2 | |
| Injury Severity Score, median (range) | 21.5 (2–34) | 26 (4–50) | 0.119 |
| Glasgow Coma Scale score, median (range) | 14 (3–15) | 14 (3–15) | 0.118 |
| Abbreviated Injury Scale score, head, median (range) | 0 (0–4) | 0 (0–5) | 0.905 |