Table 1 Population characteristics

Age (years)

32.5 ± 6.8

Male n (%)

11 (42)

Position

 Seniors n (%)

16 (62)

 Juniors n (%)

10 (38)

Initial formation

 Emergency physician

19 (73)

 Anesthesiologist

3 (12)

 Intensivist

4 (15)

Intubation experience

 Seniors (years)

11.2 ± 3.7

 Juniors (years)

2.4 ± 2.3

Drugs consumption n (%)

 Caffeine in the previous 2 h

16 (62)

 Anxiolytics

0 (0)

 Beta-blockers

0 (0)