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Table 3 Time intervals for each phase of care by prehospital treatment model

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

  Road paramedics (n = 505) HIRT HEMS (n = 336) GSA HEMS (n = 48) p-value
Time to team arrival at patient from FKS (mins) 10 (7–14) 18 (16–21) 39 (33–48) <0.001,*§ ¥
Total scene time (mins) 17 (12–26) 25 (18–35) 56 (43–69) <0.001,*§ ¥
Transport time (mins) 16 (10–23) 15 (11–20) 17 (13–25) 0.04,§ ¥
Total prehospital time (mins) 46 (34–58) 53 (41–58) 92 (79–116) <0.001,*§ ¥
Time from ED arrival to CT scan (mins) 70 (45–116) 59 (39–95) 74 (49–106) <0.001,*§ ¥
Time from FKS to CT scan (hours) 2.0 (1.5-2.9) 1.9 (1.6-2.6) 3.0 (2.3-3.8) <0.001,§ ¥
  1. Statistics reported as median (IQR). FKS, First Key Stroke of emergency call into computerised dispatch system. ED, Emergency Department. CT, Computerised Tomography.
  2. *indicates difference between Road Paramedics and HIRT HEMS at <0.05 level.
  3. §indicates difference between Road paramedics and GSA HEMS at <0.05 level.
  4. ¥indicates difference between HIRT HEMS and GSA HEMS at <0.05 level.