Table 2 Data related to intubation

Number of blade insertions

1.33 ± 0.522

1.63 ± 0.691

 − 0.56, − 0.04

0.032

Number of trials

1.28 ± 0.666

1.05 ± 0.305

0.01, 0.45

0.016

The first trial success rate

81.4% (35)

97.7% (42)

9.6

0.014

The time between opening the mouth and connecting the tube to the ventilator

49.77 ± 21.574

57.33 ± 21.418

 − 16.78, 1.66

0.040

Cormack and Lehane grade

1

41.9% (18)

67.4% (29)

-

0.045

2

41.9% (18)

30.2% (13)

3

11.6% (5)

2.3% (1)

4

4.7% (2)

0.0% (0)

Need for cricoid pressure

25.6% (11

7.0% (3

0.22

0.019

Need for tube introducer

9.3% (4

0.0% (0

2.1

0.041