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

Table 4 Survival analysis of clinicopathological characteristics based on status of station 12a lymph nodes

Variable	No. 12a (+)		No. 12a (-)
	5-YSR (%)	P value	5-YSR (%)	P value
Maximum diameter		0.408		0.142
4 cm or less	0		45.2
More than 4 cm	7.1		32.1
pT stage		0.152		0.158
T1	-		100.0
T2	-		60.7
T3	0		55.6
T4a	6.3		31.4
T4b	0		0
pN stage		0.619		< 0.001
N0	-		60.7
N1	-		31.8
N2	0		31.3
N3a	11.1		20.0
N3b	0		0
Soft tissue invasion		0.003		0.002
+	0		12.5
-	10		45.7
No. 1 LNs		0.873		0.292
+	0		28.6
-	7.7		40.2
No. 2 LNs		0.171		0.407
+	33.3		20.0
-	0		40.3
No. 3 LNs		0.950		< 0.001
+	7.7		12.5
-	0		48.5
No. 4sb LNs		0.408		0.042
+	14.3		0
-	0		42.1
No. 6 LNs		0.290		< 0.001
+	0		10.8
-	14.3		51.1
No. 7 LNs		0.143		0.028
+	0		23.1
-	10		43.7
No. 8a LNs		0.173		< 0.001
+	0		6.3
-	8.3		44.2

5-YSR: Five-year survival rate; LN: Lymph node.