Association between Helicobacter pylori status and metachronous gastric cancer after endoscopic resection

Table 4 Comparisons of the clinical characteristics of patients with or without matachronous gastric cancer in the Helicobacter pylori tested group n (%)

	Non-metachronous gastric cancer group (n = 246)	Metachronous gastric cancer group (n = 11)	P value
Sex
Male	178 (72.4)	11 (100)	0.042
Female	68 (29.6)	0 (0)
Age, mean (SD)	66.44 (9.66)	70.45 (8.52)	0.177
Location of primary cancer
Upper	24 (9.8)	1 (9.1)	0.290
Middle	79 (32.1)	6 (54.5)
Lower	143 (58.1)	4 (36.4)
Lesion size (cm), mean (SD)	13.75 (6.32)	17.36 (15.45)	0.458
Endoscopic mucosal atrophy	75 (30.5)	8 (72.7)	0.003
Intestinal metaplasia	104 (42.3)	9 (81.8)	0.010
Histology of undifferentiated type	8 (3.3)	0 (0)	0.543
SM invasion	16 (6.5)	1 (9.1)	0.736
Persistent H. pylori infection	41 (16.7)	1 (9.1)	0.173
H. pylori negative	88 (35.8)	7 (63.6)	0.061
Follow-up period (mo), mean (SD)	34.13 (25.30)	33.72 (23.64)	0.958

SM: Submucosa; H. pylori: Helicobacter pylori.