Early-life risk factors for development of asthma from 8 to 28 years of age: a prospective cohort study

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Hedman, Linnea,1979-Umeå universitet,Avdelningen för hållbar hälsa (author)

Early-life risk factors for development of asthma from 8 to 28 years of age : a prospective cohort study

Article/chapterEnglish2022

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2022-06-30
European Respiratory Society,2022
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LIBRIS-ID:oai:DiVA.org:umu-203272
https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-203272URI
https://doi.org/10.1183/23120541.00074-2022DOI

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Language:English
Summary in:English

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Background: The objective was to estimate the incidence rate of asthma from age 8 to 28 years and evaluate early-life risk factors for asthma onset at different ages.Methods: In 1996, within the Obstructive Lung Disease in Northern Sweden (OLIN) studies, a cohort of 3430 schoolchildren (97% of invited) was recruited at age 8 years to a prospective study about asthma. The cohort was followed annually from age 8 to 19 years and at 28 years by questionnaire surveys (67% of the original cohort participated). Asthma was categorised as never-asthma, onset age ⩽8 years, onset age 9–13 years, onset age 14–19 years or onset age >19 years.Results: Of the 3430 individuals in the cohort, 690 (20.1%) reported asthma in any survey. The average incidence rate was 10.0/1000 per year at ⩽8 years, 11.9/1000 per year at 9–13 years, 13.3/1000 per year at 14–19 years and 6.1/1000 per year at >19 years. The incidence was higher among boys until age 10 years, but from age 15 years, it became higher among girls. Family history of asthma, allergic sensitisation and breastfeeding <3 months were associated with asthma onset throughout the study. Low birthweight, maternal smoking during pregnancy, severe respiratory infection, rhinoconjunctivitis and eczema were associated with asthma onset ⩽8 and 9–13 years.Conclusions: The incidence of asthma was high during childhood and the teenage period, and decreased substantially during young adulthood. Early-life factors were associated with asthma onset throughout childhood but had also a lasting effect on asthma incidence until adulthood.

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Almqvist, LinneaUmeå universitet,Avdelningen för hållbar hälsa(Swepub:umu)liqv0001 (author)
Bjerg, AndersMartina Children’s Hospital, Stockholm, Sweden (author)
Andersson, MartinUmeå universitet,Avdelningen för hållbar hälsa(Swepub:umu)manann00 (author)
Backman, HelenaUmeå universitet,Avdelningen för hållbar hälsa(Swepub:umu)heaban01 (author)
Perzanowski, Matthew S.Dept of Environmental Health Sciences, Mailman School of Public Health, Columbia University, NY, New York, United States (author)
Rönmark, EvaUmeå universitet,Avdelningen för hållbar hälsa(Swepub:umu)evra0004 (author)
Umeå universitetAvdelningen för hållbar hälsa (creator_code:org_t)

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In:ERJ Open Research: European Respiratory Society8:42312-0541

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MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Clinical Medicin ...; and Respiratory Medi ...

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