Table 1.

Patient characteristics for the two groups

	Flight Group	Ground Group	p-value
	(n = 192)	(n = 184)
Age, median (IQR), y	74 (60–82)	73 (59–83)	0.91
Male, No. (%)	135 (70.3)	115 (62.5)	0.13
Medical conditions, No. (%)	108 (56.3)	105 (57.1)	0.92
Heart disease	45 (23.4)	40 (21.7)	0.71
Respiratory disease	3 (1.6)	11 (6.0)	0.03
Stroke	35 (18.2)	37 (20.1)	0.70
Sepsis	2 (1.0)	0 (0)	0.50
Others	23 (12.0)	17 (9.2)	0.41
Trauma and others, No. (%)	84 (43.7)	79 (42.9)	0.92
Trauma	55 (28.6)	48 (26.1)	0.64
Suffocation	11 (5.7)	5 (2.7)	0.20
Others	18 (9.4)	26 (14.1)	0.20
Vital sign, median (IQR)a
Respiratory rate	22 (18–30)	22 (16–28)	0.56
Heart rate	100 (80–126)	89 (70–120)	0.08
Systolic blood pressure	130 (80–180)	129 (83–189)	0.80
Glasgow Coma Scale	6 (3–11)	6 (3–7)	0.19
CA, No. (%)	75 (39.1)	89 (48.4)	0.08

Abbreviations: CA Cardiac arrest, IQR Inter quartile range

^aexcluding cardiac arrest