Table 3. Multivariate Cox proportional hazards model for DFS and OS.

	DFS			OS
	HR	95 % CI	P value	HR	95 % CI	P value
IL-35 expression	2.796	1.919–4.161	< 0.001*	2.659	1.711–4.223	< 0.001*
T stage	1.701	1.129–2.541	0.008*	3.981	1.854–9.173	< 0.001*
N stage	3.698	2.049–6.701	< 0.001*	3.321	1.813–6.203	< 0.001*
M stage	4.402	1.299–14.551	0.011*	8.001	2.403–26.815	< 0.001*

*P < 0.05 indicates a significant association among the variables.