Table 2A.

Overall NRFS by clinical factors

Variable	Patients (N = 1302)	Univariate Analysisb		Multivariate Analysisc
		5-year NRFS, %	P	Hazard Ratio (CI)	P
Sex			0.564
Female	590	82.7
Male	712	82.6
Age			0.169
<60	551	85.2
≥60	751	80.8
Alcohol			0.148
Never	381	80.3
Ever	914	83.7
Not Knowna	7
Tobacco			0.011		0.029
Never	455	79.0		Reference
Ever	842	84.8		0.72 (0.53–0.97)
Not Knowna	5
Site			0.006		0.014
Retromolar Trigone	62	93.8		Reference
Lower Gum	166	89.2		1.54 (0.51–4.62)
Buccal Mucosa	80	91.2		1.64 (0.49–5.45)
Tongue	690	81.6		2.28 (0.84–6.21)
Floor of Mouth	173	83.5		2.53 (0.88–7.34)
Upper Gum	95	70.9		3.82 (1.32–11.06)
Hard Palate	36	69.7		4.30 (1.34–13.80)
Nodal Dissection			0.063
None	496	79.9
Elective	806	84.5

NRFS: neck recurrence-free survival; CI: confidence interval.

^anot included in analyses

^bKaplan Meier

^cCox proportional hazard