Evidence map›Paper›PMID 21668818›Full record

ArticleClinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology2011

Lifetime dog and cat exposure and dog- and cat-specific sensitization at age 18 years.

G Wegienka, C C Johnson, S Havstad, D R Ownby, C Nicholas, E M Zoratti

Abstract read
In one paragraph

Article in Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed, 2 pooled it
–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

44 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Association between Pet Ownership and Obesity: A Systematic Review and Meta-Analysis.International journal of environmental research and public health · 2020
    Pooled it
  2. Pooled it
  3. Trial
  4. Dog exposure and subsequent asthma outcomes in children with asthma and allergy.The journal of allergy and clinical immunology. Global · 2026
    Article
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  8. Article
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  13. Inner-City Asthma in Children.Clinical reviews in allergy & immunology · 2019
    Review
  14. Article
  15. Subgroup differences in the associations between dog exposure during the first year of life and early life allergic outcomes.Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology · 2017
    Article
  16. Article
  17. Article
  18. Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors.

G WegienkaDepartment of Biostatistics and Research Epidemiology, Henry Ford Hospital, Detroit, MI, USA. gwegien1@hfhs.org
C C Johnson
S Havstad
D R Ownby
C Nicholas
E M Zoratti

Funding

Etiology of Pediatric AtopyR01AI051598 · NIAID · HENRY FORD HEALTH SYSTEM · PI ZORATTI, EDWARD M · 2004 to 2008
$3.1M
Regulatory T Cells in Gestation and Childhood Allergic DiseaseK01AI070606 · NIAID · HENRY FORD HEALTH SYSTEM · PI WEGIENKA, GANESA REBECCA · 2008 to 2011
$441k
NIAID NIH HHS K01 AI070606NIAID NIH HHS R01 AI051598NIAID NIH HHS R01AI051598
6 · The paper itself

Abstract

backgroundPrior research about whether keeping a dog or cat at home causes allergies to that pet has been limited to outcomes in early childhood.

objectiveEvaluate the association between lifetime dog and cat exposure and allergic sensitization to the specific animal at 18 years of age.

methodsParticipants enrolled in the Detroit Childhood Allergy Study birth cohort during 1987-1989 were contacted at the age 18 years. Sensitization to dog or cat was defined as animal-specific IgE ≥ 0.35 kU/L. Annual interview data from childhood and follow-up interviews at age 18 years were used to determine lifetime indoor dog and cat exposure (indoor was defined when the animal spent >50% of their time inside the house). Exposure was considered in various ways: first year, age groups and cumulative lifetime. Analyses were conducted separately for dogs and cats.

resultsAmong males, those with an indoor dog during the first year of life had half the risk [relative risk (RR)=0.50, 95% confidence interval (CI) 0.27, 0.92] of being sensitized to dogs at age 18 compared with those who did not have an indoor dog in the first year. This was also true for males and females born via c-section (RR=0.33, 95% CI 0.07, 0.97). Overall, teens with an indoor cat in the first year of life had a decreased risk (RR=0.52, 95% CI 0.31, 0.90) of being sensitized to cats. Neither cumulative exposure nor exposure at any other particular age was associated with either outcome. CONCLUSIONS AND CLINICAL RELEVANCE: The first year of life is the critical period during childhood when indoor exposure to dogs or cats influences sensitization to these animals.

Indexed as

Environmental ExposureAdolescentAir Pollution, IndoorAllergensAnimalsAnimals, DomesticCatsChildChild, PreschoolCohort StudiesDogsFemaleFollow-Up StudiesHumansHypersensitivity, ImmediateImmunoglobulin EAllergensImmunoglobulin E

Identifiers

PMID21668818
PMCPMC3737566

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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.