Fig 1.
Study populations of observational study.
Table 1.
Characteristics of out-of-hospital cardiac arrest patients by airway management techniques.
Table 2.
Characteristics of out-of-hospital cardiac arrest patients by transport time interval.
Table 3.
Multivariable adjusted logistic regression analysis model for outcomes by airway management technique.
Table 4.
Interaction analysis for outcomes of prehospital airway management technique according to transport time interval.