Table 3.
Univariateanalysis of venous thromboembolism risk factors
| No VTE | VTE | ||||
|---|---|---|---|---|---|
| (%) | (%) | (p) | |||
| Male Gender | 65.7 | 73.6 | 0.044* | ||
| AIS Head ≥ 3 | 34.3 | 40.5 | 0.12 | ||
| AIS Thoracic ≥ 3 | 64.0 | 75.3 | 0.004* | ||
| AIS Abdomen ≥ 3 | 44.2 | 53.2 | 0.031* | ||
| AIS Spine ≥ 3 | 12.9 | 12.0 | 0.75 | ||
| AIS Extremity ≥ 3 | 68.7 | 69.7 | 0.81 | ||
| Pelvic Fracture | 48.1 | 52.2 | 0.32 | ||
| Long Bone Extremity Fracture | 35.6 | 34.6 | 0.86 | ||
| Prophylaxis initiation < 48 h1 | 43.0 | 31.0 | 0.004* | ||
| Prophylaxis initiation < 72 h1 | 55.4 | 43.2 | 0.004* | ||
| Prophylactic IVC filter | 15.6 | 18.9 | 0.31 | ||
| 28-day Mortality | 10.6 | 8.1 | 0.41 | ||
| median | IQR | median | IQR | (p) | |
| Age | 41 | (26–55) | 42 | (25–56) | 0.75 |
| BMI | 26.7 | (23.7–31.0) | 27.8 | (24.7–31.8) | 0.010* |
| ISS | 33 | (22–41) | 34 | (27–43) | 0.002* |
| Total PRBC 24 hrs 0–24 h (U) | 5.0 | (2.8–9.0) | 7.0 | (3.4–12.0) | 0.004* |
| Total FFP 0–24 h (U) | 1.9 | (0–5.3) | 3.1 | (0–7.5) | 0.003* |
| Total Crystalloid 0–24 h (L) | 12.3 | (8.9–17.2) | 14.1 | (9.3–19.1) | 0.063 |
| Total Resuscitation 0–24 h (L) | 18.0 | (13.1–25.1) | 19.4 | (14.1–29.9) | 0.014* |
| Total Resuscitation 0–48 h (L) | 24.6 | (17.6–33.6) | 27.2 | (19.5–39.2) | 0.018* |
| Max. Lactate 0–6 h | 4.5 | (3.2–6.4) | 5.6 | (3.9–7.4) | 0.001* |
| Max. Base deficit 0–6 h | 9.4 | (7.0–12.7) | 10.0 | (6.9–13.7) | 0.19 |
| APACHE II | 28 | (24–33) | 30 | (26–34) | 0.015* |
| Overall LOS | 19 | (11–31) | 27 | (19–38) | <0.001* |
1
-subcutaneous heparin/low-molecular weight heparin; AIS, abbreviated injury score; h, hours; IVC, inferior vena cava; BMI, body mass index; ISS, injury severity score; NISS, new injury severity score; PRBC, packed red blood cells; FFP, fresh frozen plasma; U, units; L, liters; LOS, hospital length of stay. IQR interquartile range