Table 3.

Summary of important risk factors for overall survival in multivariate Cox regression analysis

Factors	n	β	S.E.	P*	HR	95% CI
AJCC, American Joint Committee on Cancer; S.E., standard error; *, all the P values were calculated by multivariate Cox regression model; HR, hazard ratio; 95% CI, 95% confidence interval.
AJCC stage
1	11				1.000
2-3	48	1.136	0.441	0.010	3.115	1.31-7.40
Tumor budding
≤17	28				1.000
>17	31	0.956	0.365	0.009	2.601	1.27-5.31
Parasympathetic neurogenesis
≤15	20				1.000
>15	39	0.898	0.343	0.009	2.454	1.25-4.81