Impact of the Number of Dissected Lymph Nodes on Survival for Gastric Cancer after Distal Subtotal Gastrectomy

Table 2

Univariate analysis of variables for patients with curative distal gastrectomy.

Characteristics	𝑁	5-year survival (%)	χ2	𝑃
Gender			<0.001	0.991
Male	467	58.1
Female	167	56.3
Age (years)			0.641	0.423
<60	370	58.9
≥60	264	56.0
Tumor diameter (cm)			4.409	0.036
≤4	343	61.0
>4	291	53.6
Tumor location			5.693	0.058
Lower	521	57.7
Middle	71	63.7
Lower and middle	42	45.4
Digestive tract construction			5.508	0.064
Billroth I	469	60.7
Billroth II	148	48.5
Roux-en-Y	17	51.0
Pathology			9.135	0.003
Differentiated	140	68.1
Undifferentiated	494	54.6
Depth of invasion			65.354	0.000
pT1	118	90.6
pT2	106	67.2
pT3	68	60.1
pT4a	342	42.9
pN category			116.863	0.000
pN0	195	83.3
pN1	115	63.6
pN2	117	44.5
pN3	207	31.2
Number of resected LNs			65.288	0.000
0~9 LNs	32	30.9
10~14 LNs	75	37.2
15~19 LNs	111	51.6
20~24 LNs	161	59.7
25~29 LNs	118	62.0
30~34 LNs	78	69.6
≥35 LNs	59	77.7
Adjuvant chemotherapy*			1.829	0.117
Yes	382	51.0
No	134	47.8