Variable | Plasma group | P value | |
YOUNG | OLD | ||
Demographics | n=93 | n=137 | |
Age, years, mean (SD) | 45.7 (17.7) | 45.3 (17.2) | 0.84 |
Male gender, No. (%) | 65 (70) | 99 (72) | 0.70 |
Race, No. (%) | 0.21 | ||
White | 88 (95) | 119 (87) | |
Black | 4 (4) | 10 (7) | |
Other | 0 (0) | 0 (0) | |
Unknown | 0 (0) | 2 (1) | |
Hispanic, No. (%) | 2 (2.3) | 4 (3.1) | 0.71 |
Current smoking, No. (%) | 41 (54) | 42 (41) | 0.09 |
Body mass index, mean (SD) | 30.7 (9.5) | 30.0 (6.5) | 0.58 |
Prehospital and injury | |||
Penetrating injury, No. (%) | 20 (22) | 26 (19) | 0.64 |
Injury severity score, median (IQR) | 22.0 (13.0, 34.0) | 22.0 (16.0, 29.0) | 0.59 |
Traumatic brain injury, No. (%) | 17 (36.2) | 19 (34.5) | 0.86 |
Hospital transfer, No. (%) | 22 (23.7) | 30 (22.1) | 0.78 |
Prehospital interval, median (IQR) | 3 (3.2) | 4 (2.9) | 0.89 |
Hospital | |||
Admission heart rate, mean (SD) | 105.2 (31.7) | 101.9 (28.9) | 0.41 |
Admission systolic blood pressure, mean (SD) | 100.7 (39.2) | 100.7 (40.8) | 1.00 |
Admission INR, median (IQR) | 1.2 (1.1, 1.4) | 1.2 (1.1, 1.3) | 0.58 |
Admission hemoglobin, median (IQR) | 10.9 (9.0, 13.3) | 10.8 (9.4, 12.7) | 0.88 |
Admission rapid thromboelastography | |||
Lysis at 30 min, %, median (IQR) | 0.1 (0.0, 1.4) | 0.2 (0.0, 1.1) | 0.75 |
Max amplitude, min, median (IQR) | 59.6 (52.0, 63.5) | 56.4 (47.8, 64.7) | 0.48 |
Alpha angle, degrees, median (IQR) | 70.8 (62.3, 74.9) | 70.2 (61.6, 74.7) | 0.60 |
K-time, min, median (IQR) | 1.8 (1.2, 2.7) | 1.8 (1.2, 3.0) | 0.95 |
Activated clotting time, median (IQR) | 113.0 (97.0, 136.0) | 113.0 (105.0, 136.0) | 0.46 |
PRBC in 24 hours, median (IQR) | 3.0 (2.0, 6.0) | 2.0 (0.0, 7.0) | 0.35 |
Plasma in 24 hours, median (IQR) | 0.0 (0.0, 3.0) | 0.0 (0.0, 3.0) | 0.90 |
Platelets in 24 hours, median (IQR) | 0.0 (0.0, 1.0) | 0.0 (0.0, 1.0) | 0.63 |
Crystalloid in 24 hours, median (IQR) | 4434 (2372, 6200) | 4375 (2200, 6600) | 0.96 |
Multisystem organ failure, No. (%) | 61 (65.6) | 84 (61.3) | 0.51 |
No., number; PRBC, packed red blood cells.