Table 4.

Analysis of haplotypes frequencies and their association with PE.

	SNP
Haplotype*	rs699947	rs1570360	rs2010963	rs25648	Freq	OR (95% CI)	P value
1	C	G	C	C	0.3851	1	-
2	C	G	G	C	0.2308	1.31 (0.72-2.39)	0.38
3	A	A	G	C	0.1953	0.72 (0.37-1.37)	0.31
4	A	G	G	T	0.1358	0.92 (0.44-1.96)	0.84
5	A	G	G	C	0.015	1.63 (0.33-8.13)	0.55
Global haplotype association p value							0.12

* The SNP order which defined the VEGF haplotype structure was rs699947, rs1570360, rs2010963, and rs25648, respectively.