Table 3 Clinical exposure of each helicopter bases, physicians, and paramedics involved in the avalanche rescue missions. Rega-Swiss Air Ambulance Helicopter Emergency Medical Service (HEMS) avalanche rescue missions between 1.01.2001 and 31.12.2015

Annual avalanche accidents per HEMS base ^a

1.1 (0.5–2.5; 0.1–7.8)

–

Annual avalanche victims per HEMS base ^a

1.5 (0.5–3.3;0.1–10.6)

0.5 (0.1–1.1;0–3.3)

Avalanche victims per physician over the study period ^b

2 (1–4;1–18)

1 (0–1;0–10)

Avalanche victims per paramedic over the study period ^b

4 (1–10.5;1–69)

1 (0–3;0–20)

0 mission

0

–

< 1 mission/year

5 (38)

–

1–4 missions/year

6 (46)

–

5–8 missions/year

2 (15)

–

0 victim

0

2 (15)

< 1 victim/ year

5 (38)

7 (54)

1–4 victims/year

5 (38)

4 (31)

5–11 victims/year

3 (23)

0

0 victim

not available

90 (48)

1 victim

89 (48)

61 (33)

2–5 victims

66 (35)

32 (17)

6–10 victims

22 (12)

3 (2)

11–20 victims

9 (5)

0

0 victim

not available

22 (34)

1 victim

18 (28)

15 (23)

2–5 victims

20 (31)

19 (30)

6–10 victims

10 (16)

3 (5)

11–20 victims

8 (13)

5 (8)

21–30 victims

4 (6)

0

31–60 victims

3 (5)

0

61–90 victims

1 (2)

0