Table 2.

Local control and overall survival rates according to the clinical variables

Variables	Categories	5-year local control (%)	P	5-year overall survival (%)	P
Age	<60 years	79.2	0.447	66.9	0.065
	≥60 years	69.3		28.1
Gender	Male	77.7	0.373	53.3	0.899
	Female	74.1		51.9
Alcohol consumption	No	63.3	0.254	57.1	0.681
	Yes	85.9		58.1
Tobacco consumption	No	76.2	0.755	77.8	0.074
	Yes	76.7		48.8
Tumor site	Oral cavity	57.1	0.002	49.2	0.527
	Oropharynx	100.0		43.5
	Larynx/hypopharynx	100.0		83.3
HPV	Negative	80.1	0.457	54.3	0.496
	Positive	72.1		47.5
pT stage	pT1/T2	81.9	0.859	63.8	0.023
	pT3/T4	74.1		41.4
pN stage	pN0	85.9	0.556	56.9	0.548
	pN+	73.5		51.4
Extracapsular spread	No	83.1	0.598	56.5	0.447
	Yes	68.2		45.4
Margins	Negative	74.6	0.271	55.6	0.919
	Close/positive	78.6		48.7
Lymphvascular invasion	No	82.1	0.228	57.5	0.041
	Yes	34.3		25.5
Perineural invasion	No	75.5	0.769	56.7	0.148
	Yes	75.0		16.7
Postoperative radiotherapy	No	79.0	0.726	44.0	0.070
	Yes	76.7		57.6