Table 7.

Cox regression analysis

Variable	Disease-free survival			Overall survival
	OR	95%CI	P value	OR	95%CI	P value
Interval time
> 9 wk vs ≤ 9 wk	0.570	0.328-0.991	0.046	0.825	0.411-1.656	0.589
Postoperative complications	1.322	0.527-3.368	0.544	2.187	0.764-6.255	0.145
ypT
ypT0 vs ypT4	0.047	0.01-0.214	< 0.01	0.065	0.014-0.307	0.001
ypT1 vs ypT4	0.173	0.022-1.337	0.093	0.253	0.031-2.031	0.196
ypT2 vs ypT4	0.102	0.038-0.275	< 0.01	0.076	0.02-0.288	0.001
ypT3 vs ypT4	0.387	0.205-0.731	0.003	0.287	0.128-0.641	0.002
ypN
ypN0 vs ypN2	0.705	0.35-1.421	0.329	0.765	0.282-2.077	0.599
ypN1 vs ypN2	0.967	0.504-1.853	0.919	0.939	0.363-2.426	0.897

OR: Odds ratio.