Evidence map›Paper›PMID 42247120›Full record

ArticleCanadian journal of public health = Revue canadienne de sante publique2026

Prepregnancy body mass index in Ontario from 2012 to 2022: A population-based descriptive study.

Sahar Khademioore, Elizabeth K Darling, Rohan DʼSouza, Giulia M Muraca, Yanfang Guo, Laura N Anderson

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Article in Canadian journal of public health = Revue canadienne de sante publique, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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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

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0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

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5 · Who and what money

Authors and funding

6 authors.

Sahar KhademiooreDepartment of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada. khades1@mcmaster.ca.ORCID http://orcid.org/0000-0002-3025-0006
Elizabeth K DarlingMcMaster Midwifery Research Centre, McMaster University, Hamilton, ON, Canada.
Rohan DʼSouzaDepartment of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada.
Giulia M MuracaDepartment of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada.
Yanfang GuoSchool of Epidemiology and Public Health, University of Ottawa, Ottawa, ON, Canada.
Laura N AndersonDepartment of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada.

Funding

CIHR WI1-179882
6 · The paper itself

Abstract

objectivesTo examine temporal trends in prepregnancy body mass index (BMI) from 2012 to 2022 in Ontario, Canada, and identify disparities across sociodemographic and medical condition subgroups.

methodsWe conducted a population-based descriptive study using data from the Better Outcomes Registry & Network (BORN) Ontario. The study included 1,170,997 singleton births between April 2012 and March 2022. Prepregnancy BMI was categorized according to World Health Organization classifications. We used generalized estimating equations to assess temporal trends in mean BMI and BMI categories, with sequential adjustments for socioeconomic and medical factors. Analyses were stratified by maternal age, parity, race/ethnicity, neighbourhood income, education, and material deprivation quantiles, smoking status, and pre-existing medical conditions.

resultsMean prepregnancy BMI remained stable at 25.3 kg/m

conclusionPrepregnancy BMI increased significantly in Ontario between 2012 and 2022, with acceleration from 2016 onward. Marked disparities across sociodemographic subgroups highlight the need for targeted preconception health interventions.

Indexed as

Body mass indexEpidemiologyObesityPregnancySocioeconomic factors

Identifiers

PMID42247120

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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.