Table 3.

Univariate analyses of prognostic factors for survival

Variables	No. of patients	Cumulative 12-month preogresion free survival rate	P	Cumulative 2-year overall survival rate	P
Age
< 50	22	49.0%	0.725	50.0%	0.152
≧50	35	68.6%		68.0%
Gender
male	55	61.5%	0.878	65.2%	0.553
female	2	50.0%		50.0%
Site
oral cavity	24	41.7%		45.5%	0.093
oropharynx	21	66.7%	0.101	66.6%
Hypopharynx/larynx	12	81.8%	0.035*	83.3%
Stage
IVa	10	80.0%	0.119	90.0%	0.049*
IVb	47	57.2%		54.7%
T stage
0-2	6	66.7%	0.396	66.7%	0.694
3-4	51	60.5%		60.3%
N stage
negative	12	50.0%	0.837	72.9%	0.350
positive	45	57.3%		57.8%
Radiation
≦6000 cGy	20	55.0%	0.304	55.0%	0.412
> 6000 cGy	37	64.5%		64.1%
Alcohol
never	11	63.6%	1.000	63.6%	0.754
yes	46	60.6%		64.8%
Smoking
never	9	66.7%	0.614	66.7%	0.679
yes	48	60.1%		60.0%
Betel nuts
never	20	70.0%	0.638	74.0%	0.123
yes	37	56.3%		54.1%
ERCC1
low expression	31	73.7%	< 0.001*	74.2%	0.023*
high expression	26	42.3%		44.4%