Tumor size as a prognostic factor in patients with advanced gastric cancer in the lower third of the stomach

Table 2 Univariate analysis of the patients’ clinicopathological characteristics for overall survival

Factors	n	5-year OS (%)	χ2	P value
Gender			1.655	0.198
Male	298	54.8
Female	132	51.3
Age (yr)			0.012	0.911
< 60	242	52.6
≥ 60	188	55.1
Tumor size (cm)			78.184	0.000
< 4.8	208	76.7
≥ 4.8	222	32.9
Depth of invasion			69.581	0.000
pT2	117	82.5
pT3	40	56.5
pT4a	273	41.2
Histological type			0.835	0.361
Differentiated	105	66.5
Undifferentiated	325	49.8
Lymph node metastasis			138.815	0.000
pN0	105	85.9
pN1	92	73.0
pN2	94	40.4
pN3	139	21.7
MLR			139.034	0.000
0	70	85.9
1	118	70.1
2	93	54.1
3	149	23.4

OS: Overall 5-year survival rate; MLR: Metastatic lymph node ratio.