The Prognostic Value of Lymph Nodes Dissection Number on Survival of Patients with Lymph Node-Negative Gastric Cancer

Table 1

Overall survival univariate analysis for predictive factors of survival.

Variables	Number, 𝑛 (%)	Survival, Mo	𝜒^2 value	𝑃  value
Gender			0.912	0.364
Male	205 (68.3%)	51.2±27.3
Female	95 (31.7%)	48.5±26.7
Age (years)			2.562	0.195
<60	172 (57.3%)	45.5±24.6
≥60	128 (42.7%)	50.7±30.1
Tumor Size (cm)			0.352	0.624
<4	185 (61.7%)	50.4±27.2
≥4	115 (38.3%)	46.5±23.4
Tumor Location			4.256	0.405
Upper third	42 (14.0%)	42.2±27.7
Middle third	52 (17.3%)	46.4±27.2
Lower third	206 (68.7%)	48.8±32.7
T Category			41.012	<0.001
T1	90 (30.0%)	46.1±29.1
T2	55 (18.3%)	48.9±31.2
T3	117 (39.0%)	53.0±31.0
T4	38 (12.7%)	55.0±31.4
Histopathological type			15.375	0.079
Adenocarcinoma	249 (83.0%)	41.3±25.5
Mucinous adenocarcinoma	21 (7.0%)	44.3±18.4
Signet ring cell carcinoma	30 (10.0%)	49.5±14.5
Histopathological grading			25.654	0.125
Well/medicate differentiated	199 (66.3%)	53.2±24.7
Poor/undifferentiated	101 (33.7%)	46.2±26.7
Examined Lymph nodes, 𝑛			46.23	<0.001
1–15	74 (24.7%)	43.7±28.0
16–20	53 (17.7%)	48.4±25.5
21–25	45 (15.0%)	52.7±32.8
26–30	36 (12.0%)	62.0±31.3
≥30	92 (30.6%)	49.7±31.8

Data in survival present with median ± SD. Chi-square test was used to compare the categorical variables. 𝑃<0.05 considered statistically significant.