. Author manuscript; available in PMC: 2016 Oct 12.

Published in final edited form as: Head Neck. 2012 May 22;35(5):684–688. doi: 10.1002/hed.23024

TABLE 3.

Risk of locoregional progression estimated by duration of therapy.

Exposure	Locoregional progression no/yes	Crude OR (95% CI)	^*Adjusted OR (95% CI)	^†Adjusted OR (95% CI)
RT duration
≤56 d (reference)	111/11	1	1	1
		6.42	8.1	7.67
≥57 d	11/7	(2.07–9.92)	(2.13–30.85)	(2.01–29.22)
		p < .01	p < .01	p < .01

Abbreviations: OR, odds ratio; CI, confidence interval; RT, radiation therapy.

OR was adjusted by age, pretreatment hemoglobin, and pretreatment percentage of ideal body weight.

^†

OR was adjusted by age, pretreatment hemoglobin, pretreatment percentage of IBW, and stage of disease.