Table 1 Demographic, injury and prehospital characteristics
Variables | Overall groupa | Hypocalcemia (iCa < 1.10 mmol/L) | p valueb | Missing valuesa | |
|---|---|---|---|---|---|
(n = 2141) | Noa (n = 763) | Yesa (n = 1378) | |||
Patient characteristics | |||||
Age (years) | 39 [26–57] | 40 [25–58] | 38 [26–56] | 0.6 | 0 |
Sex | 0.3 | 6 (0.3) | |||
Male | 1544 (72.3) | 561 (73.7) | 983 (71.5) | ||
Antiplatelet use | 126 (6.0) | 52 (6.9) | 74 (5.5) | 0.2 | 50 (2.3) |
Anticoagulation use | 64 (3.1) | 26 (3.5) | 38 (2.8) | 0.4 | 50 (2.3) |
Mechanism of trauma | 0.022 | 7 (0.3) | |||
Fall | 496 (23.2) | 174 (22.9) | 322 (23.5) | ||
Firearm | 145 (6.8) | 54 (7.1) | 91 (6.6) | ||
Pedestrian hit by vehicle | 217 (10.2) | 75 (9.9) | 142 (10.3) | ||
Stab wound | 245 (11.5) | 112 (14.7) | 133 (9.7) | ||
Other | 100 (4.7) | 33 (4.3) | 67 (4.9) | ||
Blunt trauma | 1744 (81.7) | 595 (78.2) | 1149 (83.7) | 0.002 | 7 (0.3) |
AIS head > 3 | 535 (25.8) | 179 (24.5) | 356 (26.6) | 0.3 | 70 (3.3) |
Polytrauma (Newcastle definition) | 1240 (59.9) | 398 (54.4) | 842 (62.8) | < 0.001 | 70 (3.3) |
Prehospital | |||||
Lowest SBP (mmHg) | 80 [60–100] | 86 [68–105] | 80 [60–98] | < 0.001 | 315 (15) |
Highest HR (beat/min) | 110 [85–130] | 108 [85–130] | 110 [85–130] | 0.3 | 289 (13) |
Shock Index | 1.3 [1.0–1.7] | 1.2 [0.9–1.6] | 1.4 [1.1–1.8] | < 0.001 | 593 (28) |
Initial GCS | 14 [5–15] | 14 [6–15] | 13 [5–15] | < 0.001 | 54 (2.5) |
Endotracheal intubation | 1,182 (55.4) | 370 (48.7) | 812 (59.1) | < 0.001 | 8 (0.4) |
Prehospital cardiac arrest | 251 (11.7) | 65 (8.5) | 186 (13.5) | < 0.001 | 0 |
Prehospital time (min) | 75 [55–105] | 71 [51–99] | 77 [55–107] | 0.012 | 554 (26) |
Prehospital Transfusion | 152 (7.2) | 49 (6.5) | 103 (7.5) | 0.4 | 17 (0.8) |
Fluid expansion (mL) | 1000 [500–1500] | 1000 [500–1500] | 1000 [500–1500] | < 0.001 | 156 (7.3) |