Journal
CONGENITAL ANOMALIES
Volume 62, Issue 1, Pages 42-46Publisher
WILEY
DOI: 10.1111/cga.12449
Keywords
folic acid; neural tube defect (NTD); preconceptional care; risk factors; supplementation
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Funding
- AMED [JP20ek0109483]
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The study found that pregnant women who started taking folic acid before pregnancy were less likely to experience supplementation failure if they were older, multiparous, or conceived through artificial means. In contrast, younger nulliparous women were at higher risk of folic acid deficiency.
We investigated folic acid (FA) intake and disturbing factors in pregnant women who visited our center in 2017. Among 1531 pregnant women, 45.1% of women initiated FA supplementation before pregnancy. The risk of failure of supplementation was significantly lower among women of >= 35 (adjusted odds ratio [aOR] 0.43) and 30-34 years of age (aOR: 0.59) in comparison to women of <30 years of age, and among those conceived with timing/artificial insemination of husband (aOR 0.47) and in vitro fertilization/intracytoplasmic sperm injection (aOR 0.32) in comparison to those conceived naturally. The risk among those with 1 (aOR 1.44) or >= 2 previous deliveries (aOR 2.75) was significantly higher in comparison to nulliparous women. Young, multiparous women, and those with natural conception should be targeted to promote preconceptional FA intake.
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