Evidence map›Paper›PMID 33507600›Full record

ArticleJournal of clinical hypertension (Greenwich, Conn.)2021

Impact of gestational hypertension and preeclampsia on low birthweight and small-for-gestational-age infants in China: A large prospective cohort study.

Yingying Liu, Nan Li, Hang An, Zhiwen Li, Le Zhang, Hongtian Li, Yali Zhang, Rongwei Ye

Open access · diamondAbstract read
In one paragraph

Article in Journal of clinical hypertension (Greenwich, Conn.), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed, 1 pooled it
7.1field-weighted citation impact, top 2% 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

44 citing papers in PubMed, 1 synthesis or guideline pooled it, 73 citations in OpenAlex.

  1. Pooled it
  2. Effects of the Supplementation ofPharmaceuticals (Basel, Switzerland) · 2026
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  5. Article
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  8. Article
  9. Article
  10. Article
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  12. Observational
  13. Article
  14. Article
  15. Article
  16. Baicalin alleviates HScientific reports · 2025
    Article
  17. Article
  18. Predicting Low Birth Weight in Big Cities in the United States Using a Machine Learning Approach.International journal of environmental research and public health · 2025
    Article
  19. A Review of the Diagnosis, Risk Factors, and Role of Angiogenetic Factors in Hypertensive Disorders of Pregnancy.Medical science monitor : international medical journal of experimental and clinical research · 2025
    Review
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 1 institution in 1 country.

Yingying LiuInstitute of Reproductive and Child Health, Chinese National Health Commission Key Laboratory of Reproductive Health, Peking University Health Science Center, Beijing, China.ORCID 0000-0002-7376-5720
Nan LiInstitute of Reproductive and Child Health, Chinese National Health Commission Key Laboratory of Reproductive Health, Peking University Health Science Center, Beijing, China.
Hang AnInstitute of Reproductive and Child Health, Chinese National Health Commission Key Laboratory of Reproductive Health, Peking University Health Science Center, Beijing, China.
Zhiwen LiInstitute of Reproductive and Child Health, Chinese National Health Commission Key Laboratory of Reproductive Health, Peking University Health Science Center, Beijing, China.
Le ZhangInstitute of Reproductive and Child Health, Chinese National Health Commission Key Laboratory of Reproductive Health, Peking University Health Science Center, Beijing, China.
Hongtian LiInstitute of Reproductive and Child Health, Chinese National Health Commission Key Laboratory of Reproductive Health, Peking University Health Science Center, Beijing, China.
Yali ZhangInstitute of Reproductive and Child Health, Chinese National Health Commission Key Laboratory of Reproductive Health, Peking University Health Science Center, Beijing, China.
Rongwei YeInstitute of Reproductive and Child Health, Chinese National Health Commission Key Laboratory of Reproductive Health, Peking University Health Science Center, Beijing, China.
Peking University · CN

Funding

CHINA-US COLLABORATIVE PROGRAM FOR MATERNAL-CHILD AND FAMILY HEALTHU01DD000293 · DD · PEKING UNIVERSITY HEALTH SCIENCE CENTER · PI CHENG-YOU, WEI · 2007 to 2011
$2.9M
NCBDD CDC HHS U01 DD000293
6 · The paper itself

Abstract

Studies have shown that maternal blood pressure level is associated with neonatal birthweight, but the results are not exactly consistent. As the most common hypertensive disorders during pregnancy, the mechanism of gestational hypertension and pre-eclampsia that affect fetal growth remain unclear. Our objective was to examine the association of gestational hypertension and pre-eclampsia with the risk of low birthweight (LBW) and small-for-gestational-age (SGA). Data were obtained from the China-US Collaborative Project for Neural Tube Defects Prevention, a large population-based cohort study. We selected participants who were registered in two southern provinces, had exact information on gestational blood pressure and pregnancy outcomes, and were not affected by chronic hypertension. Logistic regression was used to adjust for the effects of the main potential confounders, including age, body mass index, education, occupation, ethnicity, folic acid use, and parity. The overall incidences of LBW and SGA were 2.25% and 5.86%, respectively. The incidences of LBW/SGA were 3.58%/7.58% and 6.02%/10.67% for gestational hypertension and pre-eclampsia group, relative to 2.11%/5.68% and 2.16%/5.74% for normal group. The adjusted odds ratios associated with gestational hypertension/pre-eclampsia were 1.77 (95% CI: 1.63, 1.92)/3.01 (95% CI: 2.67, 3.40) for LBW and 1.40 (95% CI: 1.32, 1.48)/2.02 (95% CI: 1.84, 2.22) for SGA, respectively. The early onset of gestational hypertension/pre-eclampsia appeared to be a relatively more detrimental exposure window for both LBW and SGA. Our results support an association between gestational hypertension or pre-eclampsia and the increased risk of LBW and SGA.

Indexed as

HypertensionHypertension, Pregnancy-InducedPre-EclampsiaBirth WeightChinaCohort StudiesFemaleHumansInfantInfant, NewbornPregnancyProspective Studiescohort studygestational hypertensionlow birthweightpre-eclampsiasmall-for-gestational-age

Identifiers

PMID33507600
PMCPMC8678768
OpenAlexW3122964155

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.