Table 4.

Multivariate analysis of potentially predictive factors of disease-free survival

Variable	Comparison	Hazard Ratio	p- value	Hazard Ratio	p- value
Dysplasia at margin	Moderate/Severe v Mild/None	2.84 (1.30–6.19)	0.0086
Dysplasia at margin	Severe v None			2.57 (0.81–8.16)	0.11
Dysplasia at margin	Moderate v None			2.66 (1.07–6.64)	0.036
Dysplasia at margin	Mild v None			0.57 (0.13–2.54)	0.46
Histologic Grade	Poor v Well/Mod/Unk	3.21 (1.27–8.08)	0.013	3.34 (1.31–8.53)	0.011
Pack years	Continuous	0.99 (0.97–1.01)	0.86	0.99 (0.99–1.01)	0.90
Neck Dissection	No vs yes	2.18 (0.91–5.23)	0.082	2.20 (0.92–5.25)	0.077
Age	Continuous	1.01 (0.98–1.03)	0.66	1.01 (0.91–1.03)	0.65
Skeletal Muscle	Yes v No	1.97 (0.92–4.22)	0.08	1.98 (0.92–4.23)	0.080
pT	2 v 1	1.46 (0.51–4.24)	0.48	1.42 (0.49–4.09)	0.51