From: A comparison of airway management devices in simulated entrapment-trauma: a prospective manikin study
Predictor variable
b
SE
t
95% CI
p value
Time to first successful ventilation
0.08
0.01
7.38
0.06–0.10
< 0.001
Attempts required for successful placement
2.61
0.65
4.02
1.32–3.90
Constant
− 1.92
0.73
− 2.64
− 3.37 to − 0.48