Evidence map›Paper›PMID 27358265›Full record

ArticleAmerican journal of epidemiology2016

High Maternal Body Mass Index in Early Pregnancy and Risks of Stillbirth and Infant Mortality-A Population-Based Sibling Study in Sweden.

Anna Lindam, Stefan Johansson, Olof Stephansson, Anna-Karin Wikström, Sven Cnattingius

Open access · bronzeAbstract read
In one paragraph

Article in American journal of epidemiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
5.7field-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

16 citing papers in PubMed, 29 citations in OpenAlex.

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  8. Findings in Stillbirths Associated with Placental Disease.American journal of perinatology · 2020
    Article
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  11. Retrospective analysis of risk factors for low 1-minute Apgar scores in term neonates.Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologica · 2019
    Article
  12. Article
  13. The Risks Associated With Obesity in Pregnancy.Deutsches Arzteblatt international · 2018
    Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors.

Anna Lindam
Stefan Johansson
Olof Stephansson
Anna-Karin Wikström
Sven Cnattingius

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In a population-based case-control study, we investigated whether familial confounding influenced the associations between maternal overweight/obesity and risks of stillbirth and infant mortality by including both population and sister controls. Using nationwide data from the Swedish Medical Birth Register (1992-2011), we included all primiparous women with singleton births who also had a sister with a first birth during that time period. We used logistic regression analyses to calculate odds ratios (and 95% confidence intervals) adjusted for maternal age, height, smoking habits, education, and time period (5-year groups) of child's birth. Body mass index (BMI) was calculated as weight (kg)/height (m)(2) Compared with population controls with a normal BMI (18.5-24.9), stillbirth risk increased with increasing BMI (BMI 25-29.9: odds ratio (OR) = 1.51 (95% confidence interval (CI): 1.21, 1.89); BMI 30-34.9: OR = 1.77 (95% CI: 1.24, 2.50); BMI ≥35: OR = 3.16 (95% CI: 2.10, 4.76)). The sister case-control analyses revealed similar results. Offspring of obese women (BMI ≥30) had an increased risk of infant mortality when population controls were used (OR = 2.41, 95% CI: 1.83, 3.16), and an even higher risk was obtained when sister controls were used (OR = 4.04, 95% CI: 2.25, 7.25). We conclude that obesity in early pregnancy is associated with increased risks of stillbirth and infant mortality independently of genetic and early environmental risk factors shared within families.

Indexed as

Infant MortalitySiblingsAdultBody Mass IndexCase-Control StudiesFemaleHumansInfantMaternal AgeMaternal HealthObesityPregnancyPregnancy ComplicationsStillbirthSwedenWeight Gainbody mass indexfamilial confoundinginfant mortalityneonatal mortalitypostneonatal mortalitysibling-design studiesstillbirth

Identifiers

PMID27358265
PMCPMC4945704
OpenAlexW2473579669

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.