Prognostic factors in patients with node-negative gastric carcinoma: A comparison with node-positive gastric carcinoma

Table 3 Prognostic significance by univariate analysis of variables for patients with lymph node-negative gastric carcinoma

Variables	5-year survival (%)	P value
Age (yr)		< 0.01
< 65	79.1
≥ 65	70.7
Gender		NS
Male	74.4
Female	81.3
Tumor size (cm)		< 0.001
< 2.0	88.5
2 - 4.9	79.2
≥ 5	53.6
Depth of invasion		< 0.001
T1, T2	88.4
T3, T4	55.4
Location		< 0.001
Upper third	49.9
Middle third	67.9
Lower third	62.3
Histologic type		NS
Differentiated	78.4
Undifferentiated	75.7
Operative type		< 0.001 NS
Total	61.5
Subtotal	80.9
Extent of lymph node dissection
< D2	67.6
≥ D2	77.3
Stage		< 0.001
I	88.4
II	61.5
III	17.9
IV	22.3

NS, not significant