Risk of station 12a lymph node metastasis in patients with lower-third gastric cancer

Table 3 Multivariate analysis of risk factors for survival of patients with lower-third gastric cancer

Variable	Cox regression analysis1		Cox regression analysis2
	95%CI	P value	95%CI	P value
Station 12a lymph node metastasis	0.775-2.576	0.260	1.659-5.043	< 0.001
Maximum diameter	0.690-1.559	0.859	0.722-1.644	0.682
pT stage	0.852-1.439	0.446	0.926-1.524	0.175
pN stage	1.291-1.809	< 0.001
Soft tissue invasion	1.189-3.063	0.007	1.334-3.386	0.002
Adjuvant chemotherapy	0.841-2.028	0.234	0.823-1.969	0.279

¹Five factors with significance (P < 0.05) in the univariate analysis of survival were included in the multivariate analysis.

²Four factors with significance excluding pN stage.

CI: Confidence interval.