Birth Outcomes of Newborns after Folic Acid Supplementation in Pregnant Women with Early and Late Pre-Eclampsia: A Population-Based Study

Table 1

Characteristics of pregnant women without pre-eclampsia (PE) as a reference and with PE, in addition pregnant women with PE supplemented with folic acid.

Variables	Pregnant women				Pregnant women with PE + folic acid
	without PE (𝑁=37,134)		with PE (𝑁=1,017)		folic acid (𝑁=580)
Maternal age (yr)	No.	%	No.	%	No.	%
19 or less	3,191	8.6	86	8.5	43	7.4
20–29	26,877	72.4	725	71.3	410	70.7
30 or more	7,066	19.0	206	20.3	127	21.9
Mean ± S.D.	25.5	4.9	25.5	5.0	25.7	4.9
Birth order
1	17,603	47.4	706	69.4	340	58.6
2 or more	19,529	52-6	311	30.6	240	41.4
Mean ± S.D.	1.7	0.9	1.4	0.9	1.6	1.1
Pregnancy order
1	15,780	42.5	540	53.1	301	51.9
2 or more	21,354	57.5	477	46.9	279	48.1
Mean ± S.D.	1.9	1.2	1.8	1.2	1.8	1.1
Unmarried	1,443	3.9	29	2.9	14	2.4
Employment status Professional	4,330	11.7	93	9.1	56	9.7
Managerial	9,960	26.8	305	30.0	181	31.2
Skilled worker	1,551	31.1	357	35.1	202	34.8
Semiskilled worker	5,998	16.2	163	16.0	89	15.3
Unskilled worker	2,140	5.8	47	4.6	24	4.1
Housewife	2,310	6.2	40	3.9	22	3.8
Others	841	2.3	12	1.2	6	1.0