Evidence map›Paper›PMID 39083507›Full record

ArticlePloS one2024

The association between flooring materials and childhood asthma: A prospective birth cohort in the Japan Environment and Children's Study.

Hiroyoshi Iwata, Atsuko Ikeda, Mariko Itoh, Sachiko Itoh, Rahel Mesfin Ketema, Naomi Tamura, Chihiro Miyashita, Takeshi Yamaguchi, Keiko Yamazaki, Rieko Yamamoto and 5 more

Abstract read
In one paragraph

Article in PloS one, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
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

2 citing papers in PubMed.

  1. Dog exposure and subsequent asthma outcomes in children with asthma and allergy.The journal of allergy and clinical immunology. Global · 2026
    Article
  2. Article
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

15 authors.

Hiroyoshi IwataCenter for Environmental and Health Sciences, Hokkaido University, Sapporo, Japan.ORCID https://orcid.org/0000-0002-6949-0795
Atsuko IkedaCenter for Environmental and Health Sciences, Hokkaido University, Sapporo, Japan.
Mariko ItohCenter for Environmental and Health Sciences, Hokkaido University, Sapporo, Japan.
Sachiko ItohCenter for Environmental and Health Sciences, Hokkaido University, Sapporo, Japan.
Rahel Mesfin KetemaCenter for Environmental and Health Sciences, Hokkaido University, Sapporo, Japan.
Naomi TamuraCenter for Environmental and Health Sciences, Hokkaido University, Sapporo, Japan.
Chihiro MiyashitaCenter for Environmental and Health Sciences, Hokkaido University, Sapporo, Japan.
Takeshi YamaguchiCenter for Environmental and Health Sciences, Hokkaido University, Sapporo, Japan.
Keiko YamazakiCenter for Environmental and Health Sciences, Hokkaido University, Sapporo, Japan.
Rieko YamamotoCenter for Environmental and Health Sciences, Hokkaido University, Sapporo, Japan.
Maki TojoCenter for Environmental and Health Sciences, Hokkaido University, Sapporo, Japan.
Yasuaki SaijoDivision of Public Health and Epidemiology, Department of Social Medicine, Asahikawa Medical University, Asahikawa, Japan.ORCID https://orcid.org/0000-0002-6211-8202
Yoshiya ItoFaculty of Nursing, Japanese Red Cross Hokkaido College of Nursing, Kitami, Japan.
Reiko KishiCenter for Environmental and Health Sciences, Hokkaido University, Sapporo, Japan.ORCID https://orcid.org/0000-0001-8173-9269
Japan Environment and Children’s Study (JECS) Group

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundChildhood asthma is known to be affected by a range of factors, including conditions in the indoor environment. While flooring material influences indoor air conditions, the potential association between flooring materials and childhood asthma remains poorly understood in Japan.

objectiveThe present study aims to assess the association between childhood asthma incidence and the primary flooring material with the ongoing prospective nationwide birth cohort data of the Japan Environment and Children's Study (JECS).

methodsThe JECS gathered data on mothers and children through 15 Regional Centres across Japan. The present study assessed flooring materials used in the home and asthma incidence at age four among children born between 2011 and 2014. We implemented logistic regressions, setting asthma incidence among the children as the outcome and home floor type as the exposure. Additional analyses were conducted, stratifying the home's age as a proxy for tatami age, to assess whether the potential effect of tatami flooring on asthma risk is influenced by its age.

resultsThe present study included total of 75,629 infants. For tatami flooring, the main multivariable regression and additional sub-group regression for homes over ten years old produced odds ratios of 1.09; 95% Confidence Interval (CI) [1.01-1.17] and 1.10; 95% CI [1.00-1.21] compared with flooring, respectively.

conclusionThese results imply that exposure to tatami flooring, particularly in older homes, may be associated with childhood asthma incidence. Moreover, our study highlights the importance of evaluating the relationship between regional and cultural differences between asthma and flooring materials.

Indexed as

AsthmaFloors and FloorcoveringsAir Pollution, IndoorBirth CohortChildChild, PreschoolEnvironmental ExposureFemaleHumansIncidenceInfantJapanMaleProspective Studies

Identifiers

PMID39083507
PMCPMC11290634

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Registered trials

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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.