Associations of early-life pet ownership with asthma and allergic sensitization: A meta-analysis of more than 77,000 children from the EU Child Cohort Network

Background: Studies examining associations of early-life cat and dog ownership with childhood asthma have reported inconsistent results. Several factors could explain these inconsistencies, including type of pet, timing, and degree of exposure. Objective: Our aim was to study associations of early-l...

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Authors: Pinot de Moira, Angela; Casas Sanahuja, Maribel; Sunyer Deu, Jordi; Andersen, Anne Marie Nybo
Format: Article
Status:Published version
Publication date:2022
Country:España
Institution:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repository:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:10230/53239
Online Access:http://hdl.handle.net/10230/53239
http://dx.doi.org/10.1016/j.jaci.2022.01.023
Access Level:Open access
Keyword:Cat
FAIR (findable
accessible
allergic sensitization
and reusable)
Asthma
Birth cohort
Children
Dog
Exposure
Interoperable
Life course epidemiology
Meta-analysis
Ownership
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author Pinot de Moira, Angela
author2 Casas Sanahuja, Maribel
Sunyer Deu, Jordi
Andersen, Anne Marie Nybo
author2_role author
author
author
author_browse Andersen, Anne Marie Nybo
Casas Sanahuja, Maribel
Pinot de Moira, Angela
Sunyer Deu, Jordi
author_facet Pinot de Moira, Angela
Casas Sanahuja, Maribel
Sunyer Deu, Jordi
Andersen, Anne Marie Nybo
author_role author
collection Recercat. Dipósit de la Recerca de Catalunya
description Background: Studies examining associations of early-life cat and dog ownership with childhood asthma have reported inconsistent results. Several factors could explain these inconsistencies, including type of pet, timing, and degree of exposure. Objective: Our aim was to study associations of early-life cat and dog ownership with asthma in school-aged children, including the role of type (cat vs dog), timing (never, prenatal, or early childhood), and degree of ownership (number of pets owned), and the role of allergic sensitization. Methods: We used harmonized data from 77,434 mother-child dyads from 9 birth cohorts in the European Union Child Cohort Network when the child was 5 to 11 years old. Associations were examined through the DataSHIELD platform by using adjusted logistic regression models, which were fitted separately for each cohort and combined by using random effects meta-analysis. Results: The prevalence of early-life cat and dog ownership ranged from 12% to 45% and 7% to 47%, respectively, and the prevalence of asthma ranged from 2% to 20%. There was no overall association between either cat or dog ownership and asthma (odds ratio [OR] = 0.97 [95% CI = 0.87-1.09] and 0.92 [95% CI = 0.85-1.01], respectively). Timing and degree of ownership did not strongly influence associations. Cat and dog ownership were also not associated with cat- and dog-specific allergic sensitization (OR = 0.92 [95% CI = 0.75-1.13] and 0.93 [95% CI = 0.57-1.54], respectively). However, cat- and dog-specific allergic sensitization was strongly associated with school-age asthma (OR = 6.69 [95% CI = 4.91-9.10] and 5.98 [95% CI = 3.14-11.36], respectively). There was also some indication of an interaction between ownership and sensitization, suggesting that ownership may exacerbate the risks associated with pet-specific sensitization but offer some protection against asthma in the absence of sensitization. Conclusion: Our findings do not support early-life cat and dog ownership in themselves increasing the risk of school-age asthma, but they do suggest that ownership may potentially exacerbate the risks associated with cat- and dog-specific allergic sensitization.
eu_rights_str_mv openAccess
format article
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institution Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
network_acronym_str ES
network_name_str España
oai_identifier_str oai:recercat.cat:10230/53239
publishDate 2022
publishDateSort 2022
publisher Elsevier
publisherStr Elsevier
reponame_str Recercat. Dipósit de la Recerca de Catalunya
spelling Associations of early-life pet ownership with asthma and allergic sensitization: A meta-analysis of more than 77,000 children from the EU Child Cohort Network Pinot de Moira, Angela Casas Sanahuja, Maribel Sunyer Deu, Jordi Andersen, Anne Marie Nybo Cat FAIR (findable accessible allergic sensitization and reusable) Asthma Birth cohort Children Dog Exposure Interoperable Life course epidemiology Meta-analysis Ownership Background: Studies examining associations of early-life cat and dog ownership with childhood asthma have reported inconsistent results. Several factors could explain these inconsistencies, including type of pet, timing, and degree of exposure. Objective: Our aim was to study associations of early-life cat and dog ownership with asthma in school-aged children, including the role of type (cat vs dog), timing (never, prenatal, or early childhood), and degree of ownership (number of pets owned), and the role of allergic sensitization. Methods: We used harmonized data from 77,434 mother-child dyads from 9 birth cohorts in the European Union Child Cohort Network when the child was 5 to 11 years old. Associations were examined through the DataSHIELD platform by using adjusted logistic regression models, which were fitted separately for each cohort and combined by using random effects meta-analysis. Results: The prevalence of early-life cat and dog ownership ranged from 12% to 45% and 7% to 47%, respectively, and the prevalence of asthma ranged from 2% to 20%. There was no overall association between either cat or dog ownership and asthma (odds ratio [OR] = 0.97 [95% CI = 0.87-1.09] and 0.92 [95% CI = 0.85-1.01], respectively). Timing and degree of ownership did not strongly influence associations. Cat and dog ownership were also not associated with cat- and dog-specific allergic sensitization (OR = 0.92 [95% CI = 0.75-1.13] and 0.93 [95% CI = 0.57-1.54], respectively). However, cat- and dog-specific allergic sensitization was strongly associated with school-age asthma (OR = 6.69 [95% CI = 4.91-9.10] and 5.98 [95% CI = 3.14-11.36], respectively). There was also some indication of an interaction between ownership and sensitization, suggesting that ownership may exacerbate the risks associated with pet-specific sensitization but offer some protection against asthma in the absence of sensitization. Conclusion: Our findings do not support early-life cat and dog ownership in themselves increasing the risk of school-age asthma, but they do suggest that ownership may potentially exacerbate the risks associated with cat- and dog-specific allergic sensitization. Elsevier http://hdl.handle.net/10230/53239 http://dx.doi.org/10.1016/j.jaci.2022.01.023
spellingShingle Associations of early-life pet ownership with asthma and allergic sensitization: A meta-analysis of more than 77,000 children from the EU Child Cohort Network
Pinot de Moira, Angela
Cat
FAIR (findable
accessible
allergic sensitization
and reusable)
Asthma
Birth cohort
Children
Dog
Exposure
Interoperable
Life course epidemiology
Meta-analysis
Ownership
status_str publishedVersion
title Associations of early-life pet ownership with asthma and allergic sensitization: A meta-analysis of more than 77,000 children from the EU Child Cohort Network
title_full Associations of early-life pet ownership with asthma and allergic sensitization: A meta-analysis of more than 77,000 children from the EU Child Cohort Network
title_fullStr Associations of early-life pet ownership with asthma and allergic sensitization: A meta-analysis of more than 77,000 children from the EU Child Cohort Network
title_full_unstemmed Associations of early-life pet ownership with asthma and allergic sensitization: A meta-analysis of more than 77,000 children from the EU Child Cohort Network
title_short Associations of early-life pet ownership with asthma and allergic sensitization: A meta-analysis of more than 77,000 children from the EU Child Cohort Network
title_sort Associations of early-life pet ownership with asthma and allergic sensitization: A meta-analysis of more than 77,000 children from the EU Child Cohort Network
topic Cat
FAIR (findable
accessible
allergic sensitization
and reusable)
Asthma
Birth cohort
Children
Dog
Exposure
Interoperable
Life course epidemiology
Meta-analysis
Ownership
topic_facet Cat
FAIR (findable
accessible
allergic sensitization
and reusable)
Asthma
Birth cohort
Children
Dog
Exposure
Interoperable
Life course epidemiology
Meta-analysis
Ownership
url http://hdl.handle.net/10230/53239
http://dx.doi.org/10.1016/j.jaci.2022.01.023