From: Defining the learning curve of point-of-care ultrasound for confirming endotracheal tube placement by emergency physicians
N = 20
Age, mean (year)
64.1 ± 15.2
Female sex, no. (%)
11 (55)
Weight, mean (kg)
80.1 ± 13.3
Height, mean (cm)
171 ± 10.4
BMI, mean (kg/m2)
27.3 ± 3.3
Difficult airway, no. (%)
4 (20)