Table 5.

Factors associated with unsuccessful intubation attempts (n = 363) vs. successful attempts (n = 258).

Condition	Unadjusted OR (95% CI)
Laryngoscopic view*	Grade 1	Ref
	Grade 2	3.07 (2.08–4.53)
	Grade 3	13.52 (6.87–26.60)
	Grade 4	N/A
Physicians' expertise	Neonatologist	Ref
	Pediatric resident	1.74 (1.26–2.41)
Physicians' experience#	More than 40	Ref
	Between 10 and 40	1.84 (1.27–2.67)
	<10	1.54 (0.99–2.38)
Nurses' expertise	Specialized nurse+	Ref
	Nurse	1.24 (0.90–1.71)
Nurses' experience§	More than 40	Ref
	Between 10 and 40	1.66 (1.11–2.48)
	<10	1.60 (1.04–2.46)
Gastric tube in place (n = 135)	Yes	Ref
	No	0.78 (0.53–1.16)
Videolaryngoscopy (n = 112)	Yes	Ref
	No	1.220 (0.80–1.84)

CI, confidence interval; N/A, not applicable; OR, odds ratio; ref, reference.

^*Grades refer to Cormack-Lehane, data available for 604/621 attempts.

^#Number of intubations previously performed.

⁺Specialized nurses have received structured, postgraduate training in neonatal intensive care nursing.

^§Number of intubations previously assisted, data available for 610/621 attempts.