Table 1.

Airway findings observed during DLB based on patient and clinical characteristics.

		Airway Lesion Present (n/total)	%	P-value
All		66/81	81.5%
Time to DLB				0.087
	<6 months	37/49	75.5%
	>6 months	29/32	90.6%
Symptoms before DLB				0.027*
	Yes	34/37	91.9%
	No	32/44	72.7%
Indication for tracheostomy				0.42
	Ventilator dependence	34/52	65.4%
	Tracheobronchomalacia	20/30	66.7%
	Respiratory failure	13/14	92.9%
	Vocal cord paralysis	4/5	80.0%
	Congenital upper airway obstruction	3/3	100.0%
	Sleep apnea	2/2	100.0%
	Bronchopulmonary dysplasia	0/1	0.0%
Age at tracheostomy				0.30
	0-5 months	23/39	59.0%
	6-11 months	14/16	87.5%
	1-9 years	17/25	68.0%
	10-18 years	1/1	100.0%
Continued ventilation support after tracheostomy				0.54
	Yes	23/27	85.2%
	No	43/54	79.6%
Sex				0.39
	Female	30/35	85.7%
	Male	36/46	78.3%
Preterm				0.69
	Term	37/43	91.9%
	Preterm (<40 weeks)	13/16	81.3%

DLB=Diagnostic laryngoscopy and bronchoscopy