TABLE 2.

Multivariate analysis factors affecting airway stenosis and stenosis subtypes

Variable	Airway stenosis	Posterior glottic stenosis	Subglottic stenosis	Tracheal stenosis	Vocal fold immobility	Posterior glottic granuloma
	n = 204	n = 70	n = 48	n = 122	n = 16	n = 14
BMI
25%	22.7	22.3	24.6	23.2	28.3	22.1
50%	29.0	29.0	29.9	29.3	30.6	28.9
75%	36.6	35.1	38.3	37.3	42.1	40.6
Height (cm)
25%	157	160	157	157	159	164
50%	168	1703	166	168	169	179
75%	178	178	178	180	183	187
Weight (kg)
25%	66	65	66	68	75	69
50%	83	80	85	86	85	94
75%	107	101	112	111	117	123
Length of admission (days)
25%	8.8	6.0	10.0	10.0	9.8	8.5
50%	18.0	14.0	18.5	20.5	15.0	22.5
75%	33.3	25.0	32.3	36.5	22.3	33.8
Rural–urban continuum codes
1–3	87	27	23	56	9	6
4–6	52	24	12	26	4	5
7–9	65	19	13	40	3	3
Appalachian status
Yes	99	41	21	52	4	4
No	105	29	27	70	12	10
Distance to hospital (mi)
25%	12.7	17.4	9.4	10.0	9.4	11.9
50%	39.2	45.9	32.7	34.0	20.0	32.7
75%	91.8	87.4	87.9	93.2	35.7	35.8
Median household income ($)
25%	$ 30,071	$ 28,948	$ 34,229	$ 30,071	$ 34,740	$ 32,300
50%	$ 38,323	$ 38,590	$ 39,975	$ 38,323	$ 47,714	$ 45,652
75%	$ 51,093	$ 50,152	$ 51,494	$ 51,093	$ 59,536	$ 51,068