[Retracted] Influence of Two Common Polymorphisms in the EPHX1 Gene on Warfarin Maintenance Dosage: A Meta-Analysis

Table 1

Baseline characteristics and methodological quality of all included studies.

First author	Year	Country	Ethnicity	Case number	Gender (M/F)	Age (years)	Genotyping method	SNP	NOS score
Özer [20]	2013	Turkey	Asians	107	53/54	53.9 ± 13.6	LightSNiP assay	rs2292566 G>A	6
Liang [6]	2013	China	Asians	300	138/162	47.9 ± 12.5	SNaPshot assay	rs2292566 G>A	8
								rs4653436 A>G	8
Volcik [37]	2006	China	Asians	217	90/127	51.3 ± 15.0	DHPLC	rs4653436 A>G	7
Ciccacci [21]	2011	Italy	Caucasians	141	78/70	68.2	TaqMan	rs2292566 G>A	6
								rs4653436 A>G	6
Luo [23]	2010	China	Asians	197	82/115	52.9 ± 11.8	Base-quenched probe	rs2292566 G>A	7
								rs4653436 A>G	7
Pautas [14]	2010	France	Caucasians	290	69/231	86.7 ± 6.0	TaqMan	rs2292566 G>A	8
Carlquist [13]	2010	USA	Caucasians	168	79/89	71.0 ± 13.0	TaqMan	rs4653436 A>G	7

M: male; F: female; DHPLC: denaturing high performance liquid chromatography; NOS: Newcastle-Ottawa Scale criteria; SNP: single nucleotide polymorphisms.