Data collection and management
The demographic data, including age, gender, birth weight, mode of delivery, Apgar scores, underlying patient diagnoses, indications for intubation, respiratory support prior to intubation, operator experience, pre-medication use, post-menstrual age, and weight at intubation, were collected for all patients. A pre-assigned staff member who was not a part of the intubation team noted the vital signs, adverse outcomes, and complications during and after the procedure and also collected blood gas one hour after the intubation for each patient.