From: A comparison of airway management devices in simulated entrapment-trauma: a prospective manikin study
Mean
Median
SD
95% CI
LMA Supreme
1.7
1.0
1.2–2.1
Laryngeal tube
2.5
2.0
1.8–3.2
Macintosh
3.7
3.5
2.9–4.5
Airtraq
4.5
4.0
3.7–5.3