Evidence map›Paper›PMID 28236376›Full record

ArticleBJOG : an international journal of obstetrics and gynaecology2017

Spontaneous and indicated preterm delivery risk is increased among overweight and obese women without prepregnancy chronic disease.

S S Kim, P Mendola, Y Zhu, B S Hwang, K L Grantz

Abstract read
In one paragraph

Article in BJOG : an international journal of obstetrics and gynaecology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
5.3field-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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 38 citations in OpenAlex.

  1. Pooled it
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  9. Adiponectin links maternal metabolism to uterine contractility.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2019
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  11. Association of chorioamnionitis and its duration with neonatal morbidity and mortality.Journal of perinatology : official journal of the California Perinatal Association · 2019
    Observational
  12. Article
  13. Article
  14. Article
  15. The Risks Associated With Obesity in Pregnancy.Deutsches Arzteblatt international · 2018
    Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 2 countries.

S S KimEpidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD, USA.
P MendolaEpidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD, USA.
Y ZhuEpidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD, USA.
B S HwangBiostatistics and Bioinformatics Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD, USA.
K L GrantzEpidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD, USA.
Eunice Kennedy Shriver National Institute of Child Health and Human Development · USKorea National Institute of Health · KR

Funding

Consortium on Safe LaborZIAHD008794 · NICHD · EUNICE KENNEDY SHRIVER NATIONAL INSTITUTE OF CHILD HEALTH & HUMAN DEVELOPMENT · PI GRANTZ, KATHERINE · 2009 to 2022
$3.2M
Intramural NIH HHS Z99 HD999999Intramural NIH HHS ZIA HD008794NICHD NIH HHS HHSN267200603425C
6 · The paper itself

Abstract

objectiveTo investigate the independent impact of prepregnancy obesity on preterm delivery among women without chronic diseases by gestational age, preterm category and parity.

designA retrospective cohort study.

settingData from the Consortium on Safe Labor (CSL) in the USA (2002-08). POPULATION: Singleton deliveries at ≥23 weeks of gestation in the CSL (43 200 nulliparas and 63 129 multiparas) with a prepregnancy body mass index (BMI) ≥18.5 kg/m

methodsAssociation of prepregnancy BMI and the risk of preterm delivery was examined using Poisson regression with normal weight as reference.

main outcome measuresPreterm deliveries were categorised by gestational age (extremely, very, moderate to late) and category (spontaneous, indicated, no recorded indication).

resultsRelative risk of spontaneous preterm delivery was increased for extremely preterm among obese nulliparas (1.26, 95% CI: 0.94-1.70 for overweight; 1.88, 95% CI: 1.30-2.71 for obese class I; 1.99, 95% CI: 1.32-3.01 for obese class II/III) and decreased for moderate to late preterm delivery among overweight and obese multiparas (0.90, 95% CI: 0.83-0.97 for overweight; 0.87, 95% CI: 0.78-0.97 for obese class I; 0.79, 95% CI: 0.69-0.90 for obese class II/III). Indicated preterm delivery risk was increased with prepregnancy BMI in a dose-response manner for extremely preterm and moderate to late preterm among nulliparas, as it was for moderate to late preterm delivery among multiparas.

conclusionsPrepregnancy BMI was associated with increased risk of preterm delivery even in the absence of chronic diseases, but the association was heterogeneous by preterm categories, gestational age and parity. TWEETABLE ABSTRACT: Obese nulliparas without chronic disease had higher risk for spontaneous delivery <28 weeks of gestation.

Indexed as

ObesityPregnant PeopleAdultBody Mass IndexFemaleGestational AgeHumansInfant, NewbornPregnancyPregnancy ComplicationsPregnancy OutcomePremature BirthRetrospective StudiesRisk FactorsUnited StatesMedically indicated deliveryobesitypregnancyprepregnancy obesitypreterm deliveryspontaneous delivery

Identifiers

PMID28236376
PMCPMC5568983
OpenAlexW2589838293

What OpenQuestion holds

Textmetadata
LicenceTDM
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.