Evidence map›Paper›PMID 41813620›Full record

ArticleAnnals of medicine2026

Association between pre-pregnancy BMI and preterm birth in Chinese women: a retrospective study.

Qing Li, Xinyi Lu, Jun Zhang, Tao Duan

Abstract read
PubMed Full text at PMC Publisher
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Article in Annals of medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
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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

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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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

4 authors.

Qing LiDepartment of Obstetrics, Shanghai First Maternity and Infant Hospital, Tongji University, Shanghai, China.ORCID 0009-0005-1244-0040
Xinyi LuDepartment of Biostatistics, School of Public Health, Fudan University, Shanghai, China.
Jun ZhangXinhua Hospital, Shanghai Jiao-Tong University School of Medicine, Shanghai, China.
Tao DuanDepartment of Obstetrics, Shanghai First Maternity and Infant Hospital, Tongji University, Shanghai, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo explore the association between pre-pregnancy BMI (PPBMI) and preterm birth (PTB) across the Chinese population.

methodsA total of 72,827 singleton pregnancies were included in this retrospective cohort study. Women were divided into 4 groups according to PPBMI (kg/m

resultsThe overall PTB rate was 4.8% (

conclusionsIn Chinese population, pre-pregnancy underweight and severity of underweight were not significantly associated with the risk of PTB; while overweight and obesity increased the risk of PTB. The nadir of PTB risk corresponded to a PPBMI of approximately 18.5-21.5 kg/m

Indexed as

Body Mass IndexObesityPremature BirthThinnessAdultChinaEast Asian PeopleFemaleGestational AgeHumansInfant, NewbornLogistic ModelsOdds RatioOverweightPregnancyRetrospective StudiesChinesepre-pregnancy BMIpreterm birththresholdunderweight

Identifiers

PMID41813620
PMCPMC12981264

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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.