Table 3. Multivariate Analysis (Cox Proportional Hazard Model) of Prognostic Factors for 513 Patients with the npN^a category.

	HRa	95% CIb	P
pT category			<0.001
T1+T2*	1
T3	1.163	0.747–1.811
T4	2.241	1.386–3.624
nN category			<0.001
npN1a*	1
npN1b	1.291	0.873–1.908
npN2a	1.611	1.062–2.442
npN2b	2.521	1.617–3.932
TDs	1.399	1.037–1.887	0.028
Lymphovascular invasion	2.387	1.649–3.454	<0.001

npN^a: novel pN category.

HR^b: hazard ratio.

CI^c: confidence interval.

^* : reference category.