Table 4.

Logistic regression analysis of factors affecting preeclampsia

Index	B	S.E.	Wald χ2	P	OR	95% CI
						Upper limit	Lower limit
Older age	14.739	0.091	11.226	0.002	1.674	1.332	3.795
Vitamin A deficiency	25.033	0.032	61.139	0.007	2.463	1.554	12.049
Vitamin E deficiency	10.276	0.041	46.227	0.013	2.206	1.146	9.267
BMI increase	0.122	0.117	1.269	0.105	0.794	0.428	0.862