Table 2. Characteristics of the SELE gene G98T polymorphism genotype distributions in studies included in this meta-analysis.

First author	Year	Country	Ethnicity	Case	N	Genotypes GG/GT/TT		F	% of male		Mean age		P a
						Case	Control		Case	Control	Case	Control
Zheng [35]	2001	American	Caucasian	CAD	101	31/18/2	40/10/0	0.1	54.9	42	Na	Na	0.43
Luo [37]	2003	China	Asian	CHD	190	72/15/6	85/11/1	0.067	87.1	88.7	54.0	56.0	0.36
Li [38]	2004	China	Asian	CHD	437	210/27/1	181/18/0	0.045	71.0	70.4	63.5	61.9	0.50
Ma [45] b	2008	China	Asian	CHD	204	90/18/0	83/13/0	0.068	100.0	100.0	65.4	66.1	0.48
Ma [45] b	2008	China	Asian	CHD	92	35/7/0	41/9/0	0.09	100.0	100.0	69.8	67.8	0.48
Zak [46]	2008	Poland	Caucasian	CAD	394	150/37/4	164/37/2	0.101	66.5	75.9	43.8	35.3	0.96
Zeng [47]	2008	China	Asian	CHD	410	187/33/0	174/16/0	0.042	61.8	62.1	65.0	63.0	0.55
Hong [48]	2009	China	Asian	CHD	82	58/8/0	11/5/0	0.156	Na	Na	Na	Na	0.46
Zhang [52]	2011	China	Asian	CHD	328	150/26/0	141/11/0	0.036	61.9	66.7	62.9	63.7	0.64

CHD: coronary heart disease, CAD: coronary artery disease, N: total number of subjects in each study, F: the T allele frequency in control.

Na: not available.

^a P for Hardy –Weinberg equilibrium in control group.

^bOne study with different populations.