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Table 4 Comparative data of prehospital intubation by physician 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

  Helm M, et al. [7] (2013) Sunde GA, et al. [11] (2015) Piegeler T, et al. [12] (2016) Caruana E, et al. [13] (2015) Kamiutsuri K, et al. [14] (2013) This study (2020)
Number 150 2144 988 1251 742 376
Age, y 40 (21–61)a 53 (0–95)a 49.7 (25.7–65.9)a b 60.3 (18.6)d CA 61.8 (20.9)d 74 (60–82)e
   52.7 (34.5–66.5) a c   Non CA 50.7 (20.4)d  
Medical (%) 22.0 55.0 NA NA 68% (CA), 13.6% (Non-CA) 56.4
Trauma (%) 78.0 44.0 NA NA 32% (CA), 86.4% (Non-CA) 27.7
CA (%) 0.0 42.0 46.4 57.4 61.3 44.0
Success rate (%)
 Total 100.0 98.7 99.5 99.5 99.1 97.9
 First pass 92.0 85.5 96.4 63.8 NA 91.8
 Second or additional passes 8.0 13.2 3.1 35.7 NA 7.7
Hypoxia, excluding CA (%) 12.0 2.1 NA 10.0 NA 3.7
Hypotension, excluding CA (%) NA 3.0 NA 1.3 NA 5.2
  1. Abbreviations: CA Cardiac arrest, IQR Interquartile range. a median (range) b first attempt success c two or more attempts success d mean (SD) e median (IQR)