. Author manuscript; available in PMC: 2014 Aug 1.

Published in final edited form as: Laryngoscope. 2013 Feb 7;123(8):1918–1925. doi: 10.1002/lary.24022

Table 3.

Logistic Regression Results

Dependent Variable:Prophylactic Tube Placement
		All Radiation Tx Cases N = 8,306			Excluding Surgical Cases N = 3,100
		OR	95% CI		OR	95% CI
Socio-demographic factors
Age		0.99	0.98 - 1.00	^*	1.00	0.98 - 1.01
Gender	Male	(Referent)
	Female	0.93	0.73 - 1.18		0.89	0.67 - 1.19
Race	White	(Referent)
	Black	1.40	1.05 - 1.87	^**	1.34	0.96 - 1.87	^*
	Other	1.84	1.29 - 2.63	^***	1.28	0.79 - 2.07
Marital Status	Married	(Referent)
	Single	1.51	1.11 - 2.06	^***	1.69	1.17 - 2.44	^***

	Separated	3.55	1.78 - 7.08	^***	2.91	1.14 - 7.44	^**
	Divorced	1.55	1.12 - 2.13	^***	1.60	1.10 - 2.34	^**
	Widowed	1.68	1.27 - 2.24	^***	1.55	1.10 - 2.20	^**
	Unknown	1.47	0.92 - 2.33		1.58	0.92 - 2.69	^*
Disease-specific
Tumor Site	Larynx	(Referent)
	Hypopharynx	1.39	0.98 - 1.96	^*	1.42	0.96 - 2.09	^*
	Nasopharynx	0.45	0.23 - 0.88	^**	0.47	0.20 - 1.13	^*
	Oral Cavity	0.67	0.47 - 0.95	^**	0.55	0.33 - 0.91	^**
	Oropharynx	1.19	0.93 - 1.52		1.06	0.80 - 1.43
Stage	Localized	(Referent)
	Regional	2.55	1.96 - 3.32	^***	2.63	1.89 - 3.67
Treatment-related
Surgery		0.33	0.27 - 0.41	^***	NA
Chemotherapy		1.22	0.99 - 1.51	^*	1.12	0.87 - 1.44
Comorbidity	0	(Referent)
	1-2	1.33	0.92 - 1.90		1.09	0.68 - 1.75
	3+	1.21	0.84 - 1.74		1.08	0.70 - 1.67

p < 0.10

^**

p < 0.05

^***

p < 0.01