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Table 3 Demographic, injury, and resuscitation characteristics of derivation and validation cohorts

From: Development and validation of a prehospital prediction model for acute traumatic coagulopathy

  Derivation cohort (n = 1963) Validation cohort (n = 285)
Age 44.6 (18.5) 48.2 (19.0)
Male sex 1422 (72.6) 204 (71.6)
Non-white race 349 (18.1) 40 (14.0)
Hispanic 199 (10.3) 18 (6.4)
Minutes from injury to ED arrival 51 (38–70) 56 (40–86)
Blunt injury 1727 (88.0) 285 (100)
Mechanism of injury
 Motor vehicle crash 642 (32.7) 104 (36.5)
 Motorcycle crash 185 (9.4) 50 (17.6)
 Bicycle crash 83 (4.2) 10 (3.5)
 Pedestrian struck 120 (6.1) 51 (17.9)
 Fall 435 (22.2) 44 (15.4)
 Other 498 (25.4) 26 (9.1)
First recorded prehospital vital signs
 Systolic blood pressure (mmHg) 131 (28) 116 (37)
 Heart rate 94 (23) 99 (26)
 Respiratory rate 20 (5.3) 19 (7.6)
First recorded non-intubated GCS 15 (13–15) 14 (8–15)
Pre-hospital interventions
 Cardiopulmonary resuscitation 41 (2.1) 9 (3.2)
 Chest decompression 29 (1.5) 8 (2.8)
 Intubation 317 (16.2) 145 (50.9)
Initial ED temperature 36.3 (1.07) 35.9 (1.23)
Injury severity score 17.3 (12.0) 32.3 (15.1)
Admission INR 1.19 (0.74) 1.25 (0.26)
Acute traumatic coagulopathy 115 (5.9) 26 (9.1)
Death before discharge 175 (8.9) 37 (13.0)
  1. Values reported as median (SD), number (%) or median (IQR). ED emergency department, GCS Glasgow Coma Score, INR international normalized ratio