TABLE 2.

Influence of general information and OCM-related indicators on PIH incidence based on logistic linear regression analysis*.

Variables		B	S.E.	Wald	p	Exp (B)	95.0% CI for EXP (B)
							Lower	Upper
	Age	−0.05	0.03	2.715	0.099	0.951	0.896	1.01
All the subjects	Weight	0.036	0.025	2.052	0.152	1.037	0.987	1.09
(n = 1,137)	Body mass index	0.123	0.071	3.006	0.083	1.131	0.984	1.301
Normotensive group (n = 1,006)	Number of embryos	−0.452	0.457	0.978	0.323	0.636	0.26	1.559
PIH group (n = 131)	Gravidity	0.211	0.144	2.16	0.142	1.235	0.932	1.637
	Parity	−0.144	0.304	0.226	0.634	0.866	0.477	1.569
	MTHFR C677T genotype	0.083	0.145	0.327	0.567	1.087	0.817	1.445
	Serum vitamin B12 concentration (ng/L)	0	0.001	0.001	0.982	1	0.998	1.002
	Serum homocysteine concentration (μmol/L)	0.156	0.051	9.358	0.002	1.169	1.058	1.291
	Serum folate concentration (mmol/L)	0.019	0.01	3.703	0.054	1.019	1	1.039
	Constant	−6.828	1.48	21.278	0	0.001