Table 2.

Information of selected GEO series dataset.

GEO datasets	Year	Country	Platform	Sample	N
GSE13195	2009	China	GPL5175	GC	25
				Non-GC	25
GSE13911	2008	Italy	GPL570	GC	38
				Non-GC	31
GSE26899	2016	USA	GPL6947	GC	96
				Non-GC	12
GSE27342	2011	USA	GPL5175	GC	80
				Non-GC	80
GSE29272	2013	USA	GPL96	GC	134
				Non-GC	134
GSE33335	2012	China	GPL5175	GC	25
				Non-GC	25
GSE37023	2012	Singapore	GPL96	GC	112
				Non-GC	39
GSE54129	2017	China	GPL570	GC	111
				Non-GC	21
GSE63089	2014	China	GPL5175	GC	45
				Non-GC	45
GSE64591	2015	USA	GPL570	GC	63
				Non-GC	31
GSE65801	2015	China	GPL14550	GC	32
				Non-GC	32

GEO, Gene Expression Omnibus; GC, gastric cancer.