Relationship between celiac artery variation and number of lymph nodes dissection in gastric cancer surgery

Table 2 The relationship between the number of lymph nodes dissection and the clinicopathological features of radical D2 lymphadenectomy for gastric cancer

Influence factors	n	mean ± S	SS	MS	t or F value	P value
Gender
Male	306	22.869 ± 0.573	-	-	0.097	0.922
Female	115	22.765 ± 0.839
Agein yr
≤ 45	77	23.091 ± 1.313	15.536	7.768	0.081	0.922
46-60	189	22.937 ± 0.625
> 60	155	22.600 ± 0.817
Variation of celiac artery
Yes	110	20.391 ± 0.693	-	-	3.651	0.000
No	311	23.707 ± 0.587
Tumor stage
I	90	18.722 ± 0.814	-	-	13.365	0.000
II	109	22.284 ± 0.910
III	222	24.784 ± 0.676
Tumor location
Proximal stomach	51	21.588 ± 1.273	510.539	170.180	1.801	0.146
Gastric body	59	21.509 ± 1.199
Gastric antrum	281	23.000 ± 0.576
Whole stomach	30	26.100 ± 2.207
Pathology classification
Adenocarcinoma	369	22.846 ± 0.511	54.376	18.125	0.190	0.903
Mucous carcinoma	15	24.333 ± 2.656
Signet ring cell carcinoma	15	21.733 ± 1.963
Undifferentiated carcinoma	22	22.500 ± 2.123
Borrmann classification
I	19	17.053 ± 1.733	2492.710	830.903	9.261	0.000
II	105	20.171 ± 0.842
III	218	23.303 ± 0.655
IV	79	26.506 ± 1.165

MS: Mean square;SS: Standard deviation square.