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Table 6 Distance to the scene and response time by physician team and vehicle

From: Prehospital response model and time to CT scan in blunt trauma patients; an exploratory analysis of data from the head injury retrieval trial

  GSA HEMS by road, n = 11 GSA HEMS by helicopter, n = 37 HIRT HEMS, all by helicopter, n = 335 P
Nm from base to incident 5 (2–7) 20 (14–28) 11 (7–16) <0.001,*§ ¥
Response time, minutes 15 (10–19) 22 (19–27) 11 (9–14) <0.001,*¥
  1. Nm, nautical mile. All values reported as medians (IQR).
  2. *indicates difference between GSA HEMS by road and GSA HEMS by helicopter at <0.05 level.
  3. §indicates difference between GSA HEMS by road and HIRT HEMS at <0.05 level.
  4. ¥indicates difference between GSA HEMS by helicopter and HIRT HEMS at <0.05 level.