Table 4. Main results for the rs2010963 polymorphism with the risk of PE.

Comparison	Subgroup	Number	Test of association			Test of heterogeneity
			OR	95% CI	P-value	I2	P-value
C vs G	Overall	12	1.207	1.046–1.394	0.010	26.1%	0.188
	Xanthoderm	4	1.178	0.879–1.581	0.273	46.1%	0.135
	Caucasian	6	1.246	1.004–1.546	0.046	38.4%	0.150
	Indo-European hybrid	2	1.199	0.817–1.760	0.353	<0.1%	0.417
	Sequencing	2	1.620	1.044–2.516	0.032	<0.1%	0.940
	PCR-RFLP	6	1.149	0.971–1.358	0.105	<0.1%	0.640
	Other methods	4	1.224	0.866–1.731	0.253	68.1%	0.024
CC vs GG+GC	Overall	12	1.154	0.912–1.460	0.232	<0.1%	0.647
	Xanthoderm	4	0.932	0.626–1.387	0.729	<0.1%	0.510
	Caucasian	6	1.295	0.948–1.768	0.104	<0.1%	0.462
	Indo-European hybrid	2	1.296	0.564–2.975	0.541	<0.1%	0.784
	Sequencing	2	0.974	0.314–3.020	0.964	<0.1%	0.976
	PCR-RFLP	6	1.231	0.896–1.690	0.200	<0.1%	0.689
	Other methods	4	1.203	0.676–2.142	0.529	43.2%	0.152
CC +GC vs GG	Overall	12	1.310	1.044–1.643	0.020	42.6%	0.058
	Xanthoderm	4	1.350	0.898–2.031	0.149	52.3%	0.098
	Caucasian	6	1.278	0.894–1.826	0.178	56.0%	0.045
	Indo-European hybrid	2	1.360	0.667–2.772	0.397	33.4%	0.221
	Sequencing	2	2.328	1.294–4.189	0.005	<0.1%	0.901
	PCR-RFLP	6	1.174	0.924–1.491	0.189	<0.1%	0.663
	Other methods	4	1.322	0.804–2.175	0.272	73.8%	0.010
CC vs GG	Overall	12	1.324	1.024–1.713	0.032	<0.1%	0.622
	Xanthoderm	4	1.134	0.734–1.753	0.570	<0.1%	0.433
	Caucasian	6	1.461	1.019–2.094	0.039	8.9%	0.359
	Indo-European hybrid	2	1.377	0.557–3.406	0.489	<0.1%	0.905
	Sequencing	2	1.555	0.479–5.048	0.462	<0.1%	0.994
	PCR-RFLP	6	1.287	0.907–1.827	0.157	<0.1%	0.699
	Other methods	4	1.469	0.771–2.799	0.242	49.0%	0.117

Presentation with bold indicated a statistical significance.