MiR-146a rs2910164 polymorphism increases risk of gastric cancer: A meta-analysis

Table 1 Characteristics of all studies included in the meta-analysis

Study	Year	Country	Ethnicity	Source of controls	Genotyping method	Cases (n)	Control (n)	Quality score	HWE, P value
Zeng et al[23]	2010	China	Asian	HB	PCR-RFLP	304	304	15	0.12
Okubo et al[22]	2010	China	Asian	HB	PCR-RFLP	552	697	15	0.28
Hishida et al[21]	2011	China	Asian	HB	TaqMan	583	1637	15	0.74
Zhou et al[24]	2012	China	Asian	HB	TaqMan	1686	1895	15	0.93
Ahn et al[20]	2012	China	Asian	PB	PCR-RFLP	461	447	16	0.36
Dikeakos et al[18]	2013	Greek	Caucasian	PB	PCR-RFLP	163	480	15	0.29
Kupcinskas et al[19]	2014	Germany	Caucasian	HB	TaqMan	363	351	11	0.44

HB: Hospital-based; HWE: Hardy-Weinberg equilibrium; PB: Population-based; PCR-RFLP: Polymerase chain reaction-restriction fragment length polymorphism.