Table 3.

Comparison of Characteristic, Factor of Initial Surgery and Information of Locally Recurrences between R0 Group and Non-R0 Group

	R0 group n=17	non-R0 group n=16	p value
Gender (Male/Female)	12/5	12/4	0.78
age (Years)	65.2±9.0	69.9±10.4	0.18
Factor of initial surgery
T factor (2/3/4a/4b)*	3/10/2/1	1/9/3/2	0.81
N factor (0/1/2)*	7/7/2002	10/3/2002	0.54
Stage(I/II/III/IV)*	1/5/9/1	1/7/2/5	0.051
Location of locally recurrences (anterior/posterior/lateral/anastomosis)	1/3/2/11	4/2/1/9	0.37
Period until recurrence (days)	580.6±343.5	504.9±388.1	0.57

*, Pathological data according to UICC classification. Unknown data were excluded