Evidence map›Paper›PMID 34154557›Full record

ArticleBMC pregnancy and childbirth2021

Knowledge and intake of folic acid to prevent neural tube defects among pregnant women in urban China: a cross-sectional study.

Mingming Cui, Xiao-Lin Lu, Yan-Yu Lyu, Fang Wang, Xiao-Lu Xie, Xi-Yue Cheng, Ting Zhang

Open access · goldAbstract read
In one paragraph

Article in BMC pregnancy and childbirth, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 1 pooled it
4.1field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

30 citing papers in PubMed, 1 synthesis or guideline pooled it, 37 citations in OpenAlex.

  1. Pooled it
  2. [Development and validation of a comprehensive evaluation index system for preconception health behaviors in reproduc-tive-aged populations].Zhejiang da xue xue bao. Yi xue ban = Journal of Zhejiang University. Medical sciences · 2026
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  14. Folic acid supplementation on congenital heart disease and its dual character.Current research in pharmacology and drug discovery · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 1 institution in 1 country.

Mingming CuiBeijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, #2 YaBao Road, Beijing, 100020, China.
Xiao-Lin LuBeijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, #2 YaBao Road, Beijing, 100020, China.
Yan-Yu LyuBeijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, #2 YaBao Road, Beijing, 100020, China.
Fang WangBeijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, #2 YaBao Road, Beijing, 100020, China.
Xiao-Lu XieBeijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, #2 YaBao Road, Beijing, 100020, China.
Xi-Yue ChengBeijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, #2 YaBao Road, Beijing, 100020, China.
Ting ZhangBeijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, #2 YaBao Road, Beijing, 100020, China. zhangtingcv@126.com.ORCID http://orcid.org/0000-0002-6100-8327
Capital Institute of Pediatrics · CN

Funding

National Natural Science Foundation of China 81701441National Natural Science Foundation of China 81771584The National Key Basic Research Program of China 2018YFC1002502The National Key Basic Research Program of China 2018YFC1002503The Special Fund of the Pediatric Medical Coordinated Development Center of Beijing Hospitals Authority XTZD20180402
6 · The paper itself

Abstract

backgroundThe prevalence of neural tube defects (NTDs) in China declined during 2000-2017 with periconceptional folic acid (FA) supplementation, which is effective in reducing the risk of birth defects. We aimed to assess the knowledge and actual use of FA among Chinese pregnant women and to explore factors associated with FA use before pregnancy.

methodsAll data were collected in face-to-face interviews during health visits among pregnant women. We collected information about knowledge and use of FA supplements and demographic, socioeconomic, and health status. One maternity and childcare hospital was chosen in each of four cities: Beijing, Huaibei, Kunming, and Haikou. In total, 435 pregnant women were randomly recruited for interviews conducted from June to December 2016.

resultsA total of 428 pregnant women were included in this survey. Of these, 82.0% (351/428) knew that FA can prevent NTDs, and 75.9% (325/428) knew the correct time to take FA. Overall, 65.9% (282/428) of women knew both that FA can prevent NTDs and the recommended time to take FA before pregnancy. Approximately 95.1% (407/428) of women reported having ever taken FA, only 46.3% (198/428) had begun to take FA supplementation before conception, and 64.5% (109/169) of women from rural areas failed to take FA before pregnancy. Women living in northern China (odds ratio [OR] = 1.81, 95% confidence interval [CI], 1.18-2.77), those with unplanned pregnancy (OR = 1.99, 95% CI 1.30-3.04), and highly educated women (OR = 2.37, 95% CI 1.45-3.88) were more likely to know about FA. Women who were homemakers (OR = 1.94, 95% CI 1.21-3.11) and had unplanned pregnancy (OR = 6.18, 95% CI 4.01-9.53) were less likely to begin taking FA before pregnancy.

conclusionsOur survey showed that most pregnant women knew about FA. Although preconception intake of FA can help to reduce NTDs, improving the rate of FA intake before pregnancy is needed in urban areas of China, especially among homemakers and women from rural areas or with unplanned pregnancy. Campaigns are needed to increase awareness about FA and FA use before pregnancy among rural women, homemakers, and those with unplanned pregnancy and lower education levels.

Indexed as

Dietary SupplementsHealth Knowledge, Attitudes, PracticeAdultChinaCitiesCross-Sectional StudiesFemaleFolic AcidHumansNeural Tube DefectsPreconception CarePregnancyPregnancy ComplicationsPrenatal CareUrban PopulationFolic AcidFolic acidIntakeKnowledgeNeural tube defectsPregnancy

Identifiers

PMID34154557
PMCPMC8218380
OpenAlexW3174449473

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.