Evidence map›Paper›PMID 35754137›Full record

ArticlePediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology2022

Household size, T regulatory cell development, and early allergic disease: a birth cohort study.

Anne-Louise Ponsonby, Fiona Collier, Martin O'Hely, Mimi L K Tang, Sarath Ranganathan, Lawrence Gray, Ellen Morwitch, Richard Saffery, David Burgner, Terence Dwyer and 4 more

Open access · hybridAbstract read
In one paragraph

Article in Pediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
1.6field-weighted citation impact, top 16% 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

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 21 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Biomedicines · 2025
    Article
  6. Regulatory T-Cells During Pregnancy Relate to Women's Own Childhood History of Microbial Exposure.American journal of human biology : the official journal of the Human Biology Council · 2025
    Article
  7. Article
  8. Review
  9. Article
  10. Review
  11. Household size, T regulatory cell development, and early allergic disease: a birth cohort study.Pediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology · 2022
    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

14 authors at 5 institutions in 2 countries.

Anne-Louise PonsonbyThe Florey Institute of Neuroscience and Mental Health, Parkville, Victoria, Australia.ORCID 0000-0002-6581-3657
Fiona CollierSchool of Medicine, Deakin University, Geelong, Victoria, Australia.
Martin O'HelyMurdoch Children's Research Institute, Royal Children's Hospital, University of Melbourne, Parkville, Victoria, Australia.
Mimi L K TangMurdoch Children's Research Institute, Royal Children's Hospital, University of Melbourne, Parkville, Victoria, Australia.
Sarath RanganathanMurdoch Children's Research Institute, Royal Children's Hospital, University of Melbourne, Parkville, Victoria, Australia.
Lawrence GraySchool of Medicine, Deakin University, Geelong, Victoria, Australia.ORCID 0000-0002-0773-4037
Ellen MorwitchThe Florey Institute of Neuroscience and Mental Health, Parkville, Victoria, Australia.
Richard SafferyMurdoch Children's Research Institute, Royal Children's Hospital, University of Melbourne, Parkville, Victoria, Australia.
David BurgnerMurdoch Children's Research Institute, Royal Children's Hospital, University of Melbourne, Parkville, Victoria, Australia.
Terence DwyerMurdoch Children's Research Institute, Royal Children's Hospital, University of Melbourne, Parkville, Victoria, Australia.ORCID 0000-0002-2091-7663
Peter D SlyMurdoch Children's Research Institute, Royal Children's Hospital, University of Melbourne, Parkville, Victoria, Australia.ORCID 0000-0001-6305-2201
Leonard C HarrisonWalter and Eliza Hall Institute, Parkville, Victoria, Australia.
Peter VuillerminMurdoch Children's Research Institute, Royal Children's Hospital, University of Melbourne, Parkville, Victoria, Australia.ORCID 0000-0002-6580-0346
BIS Investigator Group
Royal Children's Hospital · AUBarwon Health · AUAustralian National University · AUDeakin University · AUWalter and Eliza Hall Institute of Medical Research · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundChildren born to larger households have less allergic disease. T regulatory cell (Treg) development may be a relevant mechanism, but this has not been studied longitudinally.

objectiveWe aim to (i) describe how prenatal and postnatal environmental factors are associated with Treg development and (ii) investigate whether serial Treg measures predict allergic outcomes at 1 year of age.

methodsA birth cohort (n = 1074) with information on prenatal and postnatal early life factors. Both naïve Treg (nTreg) and activated Treg (aTreg) cell populations (as a proportion of CD4

resultsInfants born to larger households (3 or more residents) had higher longitudinal nTreg proportions over the first postnatal year with a mean difference (MD) of 0.67 (95% CI 0.30-1.04)%. Higher nTreg proportions at birth were associated with a reduced risk of infant allergic outcomes. Childcare attendance and breastfeeding were associated with higher longitudinal nTreg proportions (MD 0.48 (95% CI 0.08-0.80)%.

conclusionMultiple prenatal and postnatal microbial factors are associated with nTreg and aTreg development. Larger household size was associated with higher nTreg at birth which in turn was associated with reduced allergic sensitization and disease at 12 months of age.

Indexed as

Dermatitis, AtopicFood HypersensitivityBirth CohortChildCohort StudiesFemaleHumansInfantInfant, NewbornPregnancyT-Lymphocytes, Regulatoryfood allergyhousehold sizehygiene hypothesisinfant atopic sensitizationT regulatory cells (Treg)

Identifiers

PMID35754137
PMCPMC9545943
OpenAlexW4283527691

What OpenQuestion holds

Textmetadata
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.