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Table 5 Comparative data of in-flight intubation from the present and previous studies

From: Intubation during a medevac flight: safety and effect on total prehospital time in the helicopter emergency medical service system

  Harrison T, et al. [4] (1997) Thomas SH, et al. [5] (1999) This study (flight group) (2020)
Number 120 246 192
Age, y 27 (2–75)a NA 74 (60–82)b
Medical (%) 23.0 NA 56.3
Trauma (%) 77.0 NA 28.6
CA (%) 42.0 NA 39.1
Success rate (%)
 Total 94.2 95.5 98.4
 First attempt 75.0 71.9 88.5
 Two or more attempts 19.2 23.6 9.9
Hypoxia, excluding CA (%) NA NA 3.4
Hypotension, excluding CA (%) NA NA 5.1
  1. Abbreviations: CA Cardiac arrest, IQR Interquartile range. a median (range) b median (IQR)