Table 2.

Clinicopathological characteristics related to 5-year disease specific survival (DSS). Number and percent of patients in each group, and in addition percentage of patients with 5-year DSS

Variable		n	%	DSS %	p *(DSS)
Gender	Male	92	61.3	70.7	0.702
	Female	58	38.7	69.0
Age (year) group	≤ 50	29	19.3	79.3	0.015
	51–60	29	19.3	65.5
	61–70	44	29.3	70.5
	71–80	31	20.7	67.7
	≥ 81	17	11.3	64.7
pT 8th Edition	pT1	48	35.6	87.5	0.006
	pT2	53	39.3	64.2
	pT3	34	25.2	64.7
N**	N0	108	72.0	82.4	0.001
	N+	40	26.7	37.5
	Nx/Unknown	2	1.3
Stage	Low stage	77	55.0	82.8	< 0.001
	High stage	63	42.0	44.6
	Nx/Unknown	10	6.7

*Significant at 0.05 level

**Combination of cN and pN. If neck dissection was performed the result on pN was superior to cN