Demographic data
| Patients requiring 0u pRBC (n=237) | Patients requiring 1u–4u pRBC (n=143) | Patients requiring ≥5u pRBC (n=82) | ||
| Sex, n (%) | Male | 201 (85) | 101 (71)* | 69 (84) |
| Age (years) | 31 (23.5, 40) | 33 (23, 51) | 30 (23, 46) | |
| BMI | 26 (22, 31) | 26 (22, 30) | 26 (22, 32) | |
| MOI | Penetrating | 164 (69) | 65 (45)* | 50 (61) |
| Blunt | 73 (31) | 78 (55)* | 32 (39) | |
| Transfer, n (%) | 39 (16) | 32 (22) | 9 (11) | |
| ISS | 10 (5, 19) | 22 (14, 35)† | 29 (19, 39)†‡ | |
| RI | 2.5 (1.8, 3.4) | 7.5 (5.1, 10.2)† | 24.6 (18.6, 42.2)†‡ | |
| Crystalloid (%) | 97 | 39† | 11†‡ | |
| EBL (L) | 0.2 (0.05, 0.5) | 1.0 (0.5, 1.5)† | 3.0 (1.65, 5.0)†‡ | |
| Duration of operation (min) | 144 (115, 189) | 150 (113, 205) | 171 (119, 233) | |
| Fluid administered (mL/hour) | 952 (731, 1293) | 991 (747, 1379) | 910 (635, 1159) | |
| (mL/kg/hour) | 12 (9, 15) | 12 (9, 19) | 11 (7, 14)‡ | |
All data presented as number (percentage) or median (25% percentile, 75% percentile).
*P<0.05 (χ2).
†P<0.05 vs. 0 pRBC.
‡P<0.05 vs. 1–4 pRBC.
BMI, Body Mass Index, EBL, Estimated Blood Loss; ISS, injury severity score, MOI, Mechanism of Injury, RI, Resuscitation Intensity; pRBC, Packed Red Blood Cells; u, unit.