Table 4.

Results of a Cox regression model for lymph node yield for overall survival and disease-free survival

	Parameter	p-value	HR	95% CI
OS	Sex	0.59	0.90	0.61–1.33
	Age	≤ 0.001	1.04	1.02–1.05
	pT	0.02	1.23	1.04–1.46
	ECS	< 0.001	3.17	2.15–4.68
	LNY	0.01	0.98	0.96–1.00
DFS	Sex	0.35	0.85	0.60–1.20
	Age	≤ 0.001	1.03	1.01–1.05
	pT	0.02	1.21	1.04–1.41
	ECS	< 0.001	2.22	1.57–3.16
	LNY	0.004	0.98	0.96–0.99