Evidence map›Paper›PMID 39719520›Full record

ArticleArchives of gynecology and obstetrics2025

Pre-pregnancy body mass index and lactational mastitis: The Japan Environment and Children's Study.

Tsuyoshi Murata, Karin Imaizumi, Hirotaka Isogami, Toma Fukuda, Hyo Kyozuka, Shun Yasuda, Akiko Yamaguchi, Miyuki Mori, Akiko Sato, Yuka Ogata and 7 more

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In one paragraph

Article in Archives of gynecology and obstetrics, 2025. 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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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

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

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

17 authors.

Tsuyoshi MurataFukushima Regional Center for the Japan Environment and Children's Study, 1 Hikarigaoka, Fukushima, 960-1295, Japan. tuyoshim@fmu.ac.jp.ORCID http://orcid.org/0000-0001-9506-117X
Karin ImaizumiFukushima Regional Center for the Japan Environment and Children's Study, 1 Hikarigaoka, Fukushima, 960-1295, Japan.
Hirotaka IsogamiFukushima Regional Center for the Japan Environment and Children's Study, 1 Hikarigaoka, Fukushima, 960-1295, Japan.
Toma FukudaFukushima Regional Center for the Japan Environment and Children's Study, 1 Hikarigaoka, Fukushima, 960-1295, Japan.
Hyo KyozukaFukushima Regional Center for the Japan Environment and Children's Study, 1 Hikarigaoka, Fukushima, 960-1295, Japan.
Shun YasudaFukushima Regional Center for the Japan Environment and Children's Study, 1 Hikarigaoka, Fukushima, 960-1295, Japan.
Akiko YamaguchiFukushima Regional Center for the Japan Environment and Children's Study, 1 Hikarigaoka, Fukushima, 960-1295, Japan.
Miyuki MoriFukushima Regional Center for the Japan Environment and Children's Study, 1 Hikarigaoka, Fukushima, 960-1295, Japan.
Akiko SatoFukushima Regional Center for the Japan Environment and Children's Study, 1 Hikarigaoka, Fukushima, 960-1295, Japan.
Yuka OgataFukushima Regional Center for the Japan Environment and Children's Study, 1 Hikarigaoka, Fukushima, 960-1295, Japan.
Kosei ShinokiFukushima Regional Center for the Japan Environment and Children's Study, 1 Hikarigaoka, Fukushima, 960-1295, Japan.
Mitsuaki HosoyaFukushima Regional Center for the Japan Environment and Children's Study, 1 Hikarigaoka, Fukushima, 960-1295, Japan.
Seiji YasumuraFukushima Regional Center for the Japan Environment and Children's Study, 1 Hikarigaoka, Fukushima, 960-1295, Japan.
Koichi HashimotoFukushima Regional Center for the Japan Environment and Children's Study, 1 Hikarigaoka, Fukushima, 960-1295, Japan.
Hidekazu NishigoriFukushima Regional Center for the Japan Environment and Children's Study, 1 Hikarigaoka, Fukushima, 960-1295, Japan.
Keiya FujimoriFukushima Regional Center for the Japan Environment and Children's Study, 1 Hikarigaoka, Fukushima, 960-1295, Japan.
Japan Environment and Children’s Study (JECS) Group

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe association between maternal physique and prevalence of lactational mastitis (LM) in a large study population has not been reported. In this study, we aimed to evaluate the association between pre-pregnancy body mass index (BMI) and LM prevalence.

methodsWe analyzed data collected from participants enrolled in the Japan Environment and Children's Study, a nationwide birth cohort study conducted between 2011 and 2014. Data from women with singleton births at and after 22 weeks of gestation were analyzed. LM occurrence was identified from medical record transcripts obtained 1-month post-childbirth. Based on the pre-pregnancy BMI, participants were categorized into Group 1 (< 18.5 kg/m

resultsWe analyzed 83,170 participants. The adjusted OR for LM in Group 3 was 0.752 (95% confidence interval, 0.606-0.932). The adjusted OR for LM in Group 1 was not significantly changed.

conclusionsHigh pre-pregnancy BMI was associated with decreased LM prevalence compared with that in the reference group. The maternal preconception physique may be associated with LM prevalence.

Indexed as

Body Mass IndexLactationMastitisAdultBreast FeedingCohort StudiesFemaleHumansJapanLogistic ModelsOdds RatioPregnancyPrevalenceYoung AdultBirth cohort studyBody mass indexBreastfeedingLactational mastitisPostpartum fever

Identifiers

PMID39719520

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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.