Table 2 Duration of mission by mode of transportation and ground distance
0–25 km N = 16 | 25–50 km N = 243 | 50–75 km N = 236 | 75–100 km N = 69 | > 100 km N = 81 | |
|---|---|---|---|---|---|
Duration HEMS, min | 55.7 (46.3 to 65.6) | 57.4 (48.6 to 66.2) | 59.5 (51.5 to 67.0) | 61.5 (54.0 to 75.9) | 77.5 (62.6 to 90.7) |
Missing | 0 | 4 (1.7) | 2 (0.9) | 0 | 0 |
Duration GEMS, min | 34.8 (33.4 to 34.9) | 45.6 (38.2 to 51.2) | 63.8 (57.5 to 67.8) | 77.5 (70.0 to 84.5) | 92.6 (70.1 to 148.0) |
Difference, min HEMS—GEMS | 20.2 (10.8 to 33.2) | 11.4 (1.3 to 21.5) | − 4.2 (− 10.7 to 27.3) | − 20.0 (− 30.3 to − 8.9) | − 16.8 (− 42.8 to − 5.3) |
Missing | 0 | 4 (1.7) | 2 (0.9) | 0 | 0 |