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

Table 3 Comparisons of clinical characteristics between patients with or without metachronous gastric cancer in all patients n (%)

	Non-metachronous gastric cancer group (n = 418)	Metachronous gastric cancer group (n = 15)	P value
Sex
Male	310 (74.2)	15 (100)	0.028
Female	108 (25.8)	0 (0)
Age, mean (SD)	66.95 (9.82)	68.93 (9.35)	0.441
Location of primary cancer
Upper	35 (8.4)	2 (13.3)	0.163
Middle	115 (27.5)	7 (46.7)
Lower	268 (64.1)	6 (40.0)
Lesion size (cm), mean (SD)	14.01 (6.10)	15.60 (13.48)	0.350
Endoscopic mucosal atrophy	87 (20.8)	8 (53.3)	0.003
Intestinal metaplasia	117 (28.0)	10 (66.7)	0.001
Histology of undifferentiated type	12 (2.9)	1 (6.7)	0.397
SM invasion	31 (7.4)	1 (6.7)	0.913
Non-performance of H. pylori status test	172 (41.1)	4 (26.7)	0.262
Follow-up period (mo), mean period (SD)	33.72 (22.58)	35.60 (22.68)	0.752

SM: Submucosa; H. pylori: Helicobacter pylori.