No association of G-protein beta polypeptide 3 polymorphism with irritable bowel syndrome: Evidence from a meta-analysis

Table 1 Characteristics of individual studies in the meta-analysis

Ref.	Year	Country	IBS/controls	Diagnosis criteria	HWE of control
Kim et al[15]	2012	South Korea	60/434	Rome III	0.850
Park et al[10]	2012	South Korea	72/148	Rome III	0.411
Saito et al[18]	2012	United States	385/262	Rome II	0.154
Lee et al[5]	2010	South Korea	94/88	Rome III	0.010
Markoutsaki et al[6]	2011	Greece	124/238	Rome III	0.825
de Vries et al[9]	2009	Netherlands	136/373	Rome II	0.099
Andresen et al[14]	2006	United States	214/152	Rome II	0.514

IBS: Irritable bowel syndrome; HWE: Hardy-Weinberg equilibrium.