TABLE 3.

Odds ratios (OR) and 95% confidence intervals (95% CI) for the development of airway stenosis and stenosis subtypes

	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
Variable	OR (95% CI)	p	OR (95% CI)	p	OR (95% CI)	p	OR (95% CI)	p	OR (95% CI)	p	OR (95% CI)	p
Age
Univariate	—	—	—	—	—	—	—	—	—	—	—	—
Multivariate	1.01 (1.00–1.02)	.16	1.03 (1.01–1.04)	.006	0.993 (0.975–1.01)	.45	0.996 (0.983–1.01)	.58	1.00 (0.97–1.03)	.96	0.995 (0.961–1.03)	.75
BMI
Univariate	1.02 (1.00–1.01)	.02	1.02 (0.993–1.04)	.17	1.02 (0.990–1.04)	.24	1.02 (0.971–1.01)	.25	1.03 (0.991–1.07)	.14	1.01 (0.965–1.06)	.67
Multivariate	0.962 (0.845–1.10)	.56	0.911 (0.776–1.07)	.25	0.907 (0.760–1.08)	.28	0.987 (0.863–1.13)	.85	0.927 (0.685–1.25)	.62	0.751 (0.496–1.14)	.18
Height (cm)
Univariate	—	—	—	—	—	—	—	—	—	—	—	—
Multivariate	0.971 (0.917–1.03)	.32	0.954 (0.886–1.03)	.20	0.945 (0.871–1.03)	.17	0.992 (0.933–1.06)	.81	0.944 (0.814–1.10)	.45	0.941 (0.802–1.10)	.45
Weight (kg)
Univariate	—	—	—	—	—	—	—	—	—	—	—	—
Multivariate	1.02 (0.975–1.07)	.37	1.04 (0.983–1.10)	.17	1.04 (0.978–1.11)	.21	1.01 (0.962–1.06)	.71	1.04 (0.939–1.15)	.46	1.10 (0.968–1.25)	.14
Length of admission (days)
Univariate	—	—	—	—	—	—	—	—	—	—	—	—
Multivariate	1.01 (1.00–1.02)	.07	0.998 (0.989–1.01)	.65	1.00 (0.991–1.01)	.87	1.01 (1.00–1.02)	.03	0.984 (0.950–1.02)	.37	1.00 (0.984–1.02)	.84
Race
Univariate	0.687 (0.337–1.40)	.30	0.490 (0.146–1.65)	.25	1.81 (0.713–4.63)	.21	1.07 (0.497–2.29)	.87	6.06 (1.98–18.6)	.002	0.900 (0.114–7.09)	.92
Multivariate	0.535 (0.249–1.15)	.11	0.504 (0.143–1.77)	.29	1.60 (0.601–4.25)	.35	0.773 (0.344–1.74)	.53	6.07 (1.56–23.6)	.009	0.444 (0.047–4.20)	.48
Male gender
Univariate	—	—	—	—	—	—	—	—	—	—	—	—
Multivariate	1.27 (0.71–2.30)	.42	0.978 (0.427–2.24)	.96	1.33 (0.538–3.28)	.54	1.45 (0.755–2.77)	.27	0.727 (0.160–3.30)	.68	0.970 (0.150–6.27)	.10
Ethnicity
Univariate	0.223 (0.026–1.93)	.17	–	–	1.58 (0.181–13.8)	.68	0.498 (0.058–4.31)	.53	5.38 (0.592–49.0)	.14	–	–
Multivariate	0.190 (0.021–1.68)	.14	–	–	1.56 (0.166–14.7)	.70	0.511 (0.057–4.61)	.55	4.75 (0.422–53.4)	.21	–	–
Rurality (RUCC codes 1–9)
Univariate	0.956 (0.889–1.03)	.22	0.970 (0.878–1.07)	.55	0.929 (0.824–1.05)	.22	0.954 (0.879–0.104)	.26	0.836 (0.675–1.04)	.10	0.919 (0.742–1.14)	.44
Multivariate	1.02 (0.904–1.16)	.72	0.884 (0.743–1.05)	.17	1.05 (0.859–1.28)	.65	1.08 (0.949–1.24)	.23	1.34 (0.898–2.01)	.15	1.11 (0.800–1.55)	.52
Appalachian status
Univariate	0.695 (0.479–1.01)	.06	1.28 (0.763–2.14)	.35	0.646 (0.354–1.18)	.16	0.549 (0.360–0.836)	.005	0.278 (0.088–0.876)	.03	0.337 (0.104–1.09)	.07
Multivariate	0.625 (0.344–1.14)	.12	2.13 (0.951–4.79)	.07	0.830 (0.321–2.15)	.70	0.369 (0.191–0.713)	.003	0.750 (0.126–4.45)	.75	0.231 (0.043–1.25)	.09
Distance to hospital (mi)
Univariate	0.996 (0.992–0.999)	.02	0.998 (0.993–1.00)	.32	0.995 (0.988–1.00)	.10	0.996 (0.992–1.00)	.06	0.980 (0.964–0.996)	.01	0.990 (0.977–1.00)	.14
Multivariate	0.996 (0.991–1.00)	.07	0.995 (0.987–1.00)	.19	1.00 (0.987–1.00)	.28	0.998 (0.993–1.00)	.34	0.978 (0.949–1.01)	.15	0.994 (0.976–1.01)	.55
Median household income ($)
Univariate	1.00 (0.999–1.00)	.85	1.00 (1.00–1.00)	.49	1.00 (1.00–1.00)	.35	1.00 (1.00–1.00)	.71	1.00 (1.00–1.00)	.09	1.00 (1.00–1.00)	.84
Multivariate	1.00 (1.00–1.00)	.70	1.00 (1.00–1.00)	.38	1.00 (1.00–1.00)	.43	1.00 (1.00–1.00)	.65	1.00 (1.00–1.00)	.12	1.00 (1.00–1.00)	.42

Note: Statistically significant results have been bolded with the p values italicized.