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Table 1 Baseline characteristics of patients and mission details

From: Helicopter emergency medical service for time critical interfacility transfers of patients with cardiovascular emergencies

 

Cerebral n = 364

Cardiac n = 252

Vascular n = 29

Age, years

69.5 (56.8 to 78.0)

65.0 (55.0 to 75.0)

73.0 (64.0 to 79.0)

Male sex

202 (55.5)

190 (75.4)

26 (89.7)

NACA score

4 (4 to 5)

4 (4 to 5)

5 (4 to 5)

Intubated

72 (19.8)

23 (9.1)

2 (6.9)

Origin

 Level I university hospital (n = 3)

9 (2.5)

2 (0.8)

0

 Level II major hospital (n = 44)

185 (50.8)

110 (43.7)

16 (55.2)

 Level III regional hospital (n = 10)

70 (19.2)

36 (14.3)

3 (10.3)

 Level IV regional hospital (n = 12)

78 (21.4)

72 (28.6)

10 (34.5)

 Level V regional hospital (n = 10)

21 (5.8)

32 (12.7)

0

 Special clinics (n = 1)

1 (0.3)

0

0

Destination

 Level I university hospital (n = 5)

241 (66.2)

134 (53.2)

23 (79.3)

 Level II major hospital (n = 15)

118 (32.4)

83 (32.9)

6 (20.7)

 Level III regional hospital (n = 3)

2 (0.5)

2 (0.8)

0

 Level IV regional hospital (n = 3)

2 (0.5)

32 (12.7)

0

 Level V regional hospital (n = 1)

0

1 (0.4)

0

 Specialty clinics (n = 1)

1 (0.3)

0

0

Response time, min

22.8 (18.1 to 29.8)

21.7 (16.7 to 27.2)

20.6 (15.2 to 27.5)

 Missing

1 (0.3)

2 (0.8)

0

Total mission time, min

59.6 (50.9 to 72.9)

60.8 (52.0 to 70.6)

57.6 (53.0 to 67.2)

 Missing

4 (1.1)

2 (0.8)

0

Distance HEMS, min

37.8 (29.3 to 48.5)

37.5 (26.8 to 43.6)

38.1 (28.2 to 44.2)

Distance GEMS, min

60.0 (42.0 to 69.6)

58.4 (44.7 to 72.9)

52.0 (43.9 to 69.2)

  1. Data was complete if not otherwise stated. Continuous variables were skewed and therefore presented with median and (interquartile range). Counts are presented with percentages in (parentheses). The numbers in parentheses per level for the Origin and Destination variables represent the number of institutions in this level
  2. NACA = National Advisory Committee for Aeronautics, presented by median and interquartile range. Response time = Duration from emergency call to landing at referral hospital. Total mission time = Duration from emergency call to landing at destination hospital. Distance HEMS = Air-line distance for Helicopter Emergency Medical Service. Distance GEMS = Route distance for Ground Emergency Medical Service