Table 2.

Univariate and multivariate analysis

Univariate	Local Control		Overall Survival
	HR	95% CI	HR	95% CI
Over 21 drinks per week	1.53	0.48-4.87	1.22	0.51-2.88
Smoking > 50 pack-years	2.02	0.71-5.77	2.41	1.11-5.25
Age > 65 years	1.41	0.49-4.09	1.43	0.66-3.09
T4	2.68	0.84-8.58	1.40	0.53-3.75
N0	0.85	0.28-2.53	0.42	0.17-1.03
Chemotherapy	1.84	0.61-5.49	1.07	0.43-2.66
Multivariate
Smoking > 50 pack years			2.5	1.07-5.88