Evidence map›Paper›PMID 33589654›Full record

ArticleScientific reports2021

Association of maternal pre-pregnancy low or increased body mass index with adverse pregnancy outcomes.

Jie Tang, Xinhong Zhu, Yanbing Chen, Dongming Huang, Henning Tiemeier, Ruoling Chen, Wei Bao, Qingguo Zhao

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed
5.5field-weighted citation impact, top 4% 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

49 citing papers in PubMed, 62 citations in OpenAlex.

  1. Impact of gestational weight gain on perineal injury and obstetric anal sphincter injury among underweight primiparous women.International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics · 2026
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  4. Pre-pregnancy body mass index classification and weight gain according to new brazilian protocols and their association with gestational diabetes mellitus.Revista brasileira de ginecologia e obstetricia : revista da Federacao Brasileira das Sociedades de Ginecologia e Obstetricia · 2026
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  5. AldehydeFrontiers in medicine · 2026
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  16. Factors influencing the birth weight of ART-conceived offspring.Journal of assisted reproduction and genetics · 2025
    Review
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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

8 authors at 6 institutions in 4 countries.

Jie TangDepartment of Preventive Medicine, School of Public Health, Guangzhou Medical University, Room 507, Block 2, Xinzao, Panyu District, 511436, Guangzhou, People's Republic of China. gytanjie@163.com.
Xinhong ZhuGuangdong Women and Children Hospital, 521-523 Xingnan Street, Panyu District, 511442, Guangzhou, People's Republic of China.
Yanbing ChenGuangdong Women and Children Hospital, 521-523 Xingnan Street, Panyu District, 511442, Guangzhou, People's Republic of China.
Dongming HuangGuangdong Institute of Family Planning Science and Technology, 17th Meidong Road, Yuexiu District, 510245, Guangzhou, People's Republic of China.
Henning TiemeierDepartment of Child and Adolescent Psychiatry, Erasmus University Medical Centre-Sophia Children's Hospital, Rotterdam, The Netherlands.
Ruoling ChenFaculty of Education, Health and Wellbeing, University of Wolverhampton, Millennium City Building, Wulfruna Street, Wolverhampton, WV1 1LY, UK.
Wei BaoDepartment of Epidemiology, College of Public Health, University of Iowa, Iowa City, IA, USA.
Qingguo ZhaoGuangdong Institute of Family Planning Science and Technology, 17th Meidong Road, Yuexiu District, 510245, Guangzhou, People's Republic of China. zqgfrost@gdszjk.org.cn.
Guangdong Province Women and Children Hospital · CNGuangdong Provincial Family Planning Hospital · CNGuangzhou Medical University · CNHarvard University · USUniversity of Iowa · USUniversity of Wolverhampton · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This study investigated the association between pre-pregnancy body mass index (BMI) and adverse pregnancy outcomes among women participated in the National Free Preconception Health Examination Project in Guangdong Province, China, and explored these associations according to maternal age. Pre-pregnancy BMI was classified into underweight (BMI < 18.5 kg/m

Indexed as

Body Mass IndexPregnancy OutcomeAdultChinaFemaleHumansObesityOverweightPregnancyPregnancy ComplicationsPublic Health SurveillanceRetrospective StudiesRisk AssessmentRisk FactorsYoung Adult

Identifiers

PMID33589654
PMCPMC7884680
OpenAlexW3131314990

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.