Table 2.
Demographic and clinical characteristics of the STAAMP cohort stratified by TEG sampling
| Variable | Overall (n=903) | YES-TEG (n=837) | NO-TEG (n=66) | P value |
| Age | 39.0 (26.0–55.0) | 38.0 (26.0–55.0) | 39.5 (25.0–61.0) | 0.57 |
| Male | 668 (74.0%) | 624 (74.6%) | 44 (66.7%) | 0.16 |
| Blunt Injury | 755 (83.6%) | 702 (83.9%) | 53 (80.3%) | 0.45 |
| TBI | 212 (23.6%) | 196 (23.4%) | 16 (25.4%) | 0.72 |
| ISS | 12.0 (5.0–22.0) | 12.0 (5.0–22.0) | 14.0 (5.0–29.0) | 0.13 |
| Prehospital GCS | 15.0 (11.0–15.0) | 15.0 (12.0–15.0) | 14.0 (3.0–15.0) | <0.01 |
| Transfer | 127 (14.3%) | 113 (13.7%) | 14 (21.5%) | 0.08 |
| Prehospital Intubation | 230 (25.5%) | 204 (24.4%) | 26 (39.4%) | <0.01 |
| Prehospital SBP | 124 (88–146) | 125 (88–147) | 100 (78–140) | <0.01 |
| 24-hour whole blood | 0.0 (0.0–1.0) | 0.0 (0.0–1.0) | 0.0 (0.0–1.0) | 0.05 |
| 24-hour PRBC | 0.0 (0.0–1.0) | 0.0 (0.0–1.0) | 0.0 (0.0–4.0) | <0.01 |
| 24-hour plasma | 0.0 (0.0–0.0) | 0.0 (0.0–0.0) | 0.0 (0.0–1.0) | <0.01 |
| 24-hour platelets | 0.0 (0.0–0.0) | 0.0 (0.0–0.0) | 0.0 (0.0–0.0) | 0.03 |
| INR | 1.1 (1.0–1.2) | 1.1 (1.0–1.2) | 1.2 (1.1–1.5) | 0.04 |
| Lactate | 2.8 (1.8–4.0) | 2.7 (1.8–3.9) | 3.9 (2.3–5.8) | <0.01 |
| 30-day mortality | 81 (9.0%) | 57 (6.8%) | 24 (36.4%) | <0.01 |
| MOF | 72 (8.0%) | 69 (8.2%) | 3 (4.5%) | 0.29 |
| VTE | 36 (4.0%) | 35 (4.2%) | 1 (1.5%) | 0.29 |
Values are represented by numbers (percentages) and means (IQR).
GCS, Glascow Coma Score; INR, international normalized ratio; ISS, Injury Severity Score; MOF, multiple organ failure; NO-TEG, patients unable to be sampled; SBP, systolic blood pressure; STAAMP, Study of Tranexamic Acid During Air Medical and Ground Prehospital Transport; TBI, traumatic brain injury; TEG, thromboelastography; VTE, venous thromboembolism; YES-TEG, patients that received TEG.