Evidence map›Paper›PMID 40986249›Full record

ArticleJournal of endocrinological investigation2026

Investigating the relationship between environmental air pollution exposure and abnormal gestational weight gain in twin pregnancies: a retrospective study.

Wei-Zhen Tang, Zhe-Ming Kang, Qin-Yu Cai, Hong-Yu Xu, Yi-Fan Zhao, Yi-Han Yang, Tai-Hang Liu, Fei Han, Yong-Heng Wang, Niya Zhou

Abstract read
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In one paragraph

Article in Journal of endocrinological investigation, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
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

1 citing paper in PubMed.

  1. Article
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

10 authors.

Wei-Zhen TangDepartment of Obstetrics and Gynecology, Women and Children's Hospital of Chongqing Medical University, Chongqing, 401147, China.
Zhe-Ming KangDepartment of Obstetrics and Gynecology, Women and Children's Hospital of Chongqing Medical University, Chongqing, 401147, China.
Qin-Yu CaiDepartment of Health Toxicology, School of Public Health, Chongqing Medical University, Chongqing, 400016, China.
Hong-Yu XuDepartment of Health Toxicology, School of Public Health, Chongqing Medical University, Chongqing, 400016, China.
Yi-Fan ZhaoDepartment of Obstetrics and Gynecology, Women and Children's Hospital of Chongqing Medical University, Chongqing, 401147, China.
Yi-Han YangDepartment of Health Toxicology, School of Public Health, Chongqing Medical University, Chongqing, 400016, China.
Tai-Hang LiuDepartment of Health Toxicology, School of Public Health, Chongqing Medical University, Chongqing, 400016, China.
Fei HanDepartment of Obstetrics and Gynecology, Women and Children's Hospital of Chongqing Medical University, Chongqing, 401147, China.
Yong-Heng WangDepartment of Laboratory Medicine, Chongqing Jiulongpo People's Hospital, Chongqing, 400050, China. wangyongheng90@163.com.
Niya ZhouDepartment of Obstetrics and Gynecology, Women and Children's Hospital of Chongqing Medical University, Chongqing, 401147, China. zhouniya428@163.com.

Funding

the Key Program of Natural Science Foundation of Chongqing No. CSTB2023NSCQ-ZDX0005
6 · The paper itself

Abstract

backgroundGestational weight gain (GWG) is a critical indicator of the health and nutritional status of pregnant women and their fetuses. However, there is limited evidence on how air pollution affects abnormal GWG in twin pregnancies.

methodsIn this retrospective analysis of 3,598 twin pregnancies, participants were categorized into three groups based on GWG: optimal, inadequate, and excessive. We collected data on ambient air pollutants, including fine particulate matter (PM

resultsThe results indicated that exposure to PM

conclusionThe effects of ambient air pollutants on gestational weight gain in twin pregnancies vary by pregnancy stage, with extreme air pollution exposure exhibiting time-dependent characteristics. These findings highlight the complex, stage-specific relationship between air pollution and maternal weight gain during twin pregnancies.

Indexed as

Air PollutantsAir PollutionEnvironmental ExposureGestational Weight GainMaternal ExposurePregnancy, TwinAdultFemaleHumansParticulate MatterPregnancyRetrospective StudiesRisk FactorsAir PollutantsParticulate MatterAmbient air pollutionExcessive gestational weight gainExposure during pregnancyInadequate gestational weight gainTwin pregnancyWindow of exposure

Identifiers

PMID40986249

What OpenQuestion holds

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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.