Table 3.

Overall survival by characteristics

	Overall survival rate
Clinical stage	1-y	2-y	3-y	p value
I	92.5 %	78.0 %	67.6 %
II	73.9 %	64.5 %	53.9 %
III	63.2 %	46.6 %	33.3 %
IV	54.8 %	30.6 %	23.5 %
Clinical T stage				<0.0001
cT1	87.2 %	75.4 %	67.5 %
cT2	77.7 %	67.6 %	59.1 %
cT3	65.0 %	48.2 %	35.7 %
cT4	52.9 %	25.0 %	15.1 %
Age (years old)				0.049
> 70	60.5 %	44.4 %	34.6 %
< 70	72.9 %	55.8 %	45.4 %
Cycles of chemotherapy				0.0004
One	43.2 %	29.3 %	17.6 %
Two	67.5 %	51.3 %	41.8 %
Three	79.2 %	66.7 %	53.5 %
Four	77.1 %	56.7 %	49.3 %