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The Canadian Healthy Infant Longitudinal Development (CHILD) birth cohort study: assessment of environmental exposures
Simon Fraser Univ, Vancouver, BC, Canada..
Univ Toronto, Toronto, ON, Canada..ORCID iD: 0000-0002-5073-0832
Simon Fraser Univ, Vancouver, BC, Canada..
McMaster Univ, Hamilton, ON, Canada..
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2015 (English)In: Journal of Exposure Science and Environmental Epidemiology, ISSN 1559-0631, E-ISSN 1559-064X, Vol. 25, no 6, 580-592 p.Article in journal (Refereed) Published
Abstract [en]

The Canadian Healthy Infant Longitudinal Development birth cohort was designed to elucidate interactions between environment and genetics underlying development of asthma and allergy. Over 3600 pregnant mothers were recruited from the general population in four provinces with diverse environments. The child is followed to age 5 years, with prospective characterization of diverse exposures during this critical period. Key exposure domains include indoor and outdoor air pollutants, inhalation, ingestion and dermal uptake of chemicals, mold, dampness, biological allergens, pets and pests, housing structure, and living behavior, together with infections, nutrition, psychosocial environment, and medications. Assessments of early life exposures are focused on those linked to inflammatory responses driven by the acquired and innate immune systems. Mothers complete extensive environmental questionnaires including time-activity behavior at recruitment and when the child is 3, 6, 12, 24, 30, 36, 48, and 60 months old. House dust collected during a thorough home assessment at 3-4 months, and biological specimens obtained for multiple exposure-related measurements, are archived for analyses. Geo-locations of homes and daycares and land-use regression for estimating traffic-related air pollution complement time-activity-behavior data to provide comprehensive individual exposure profiles. Several analytical frameworks are proposed to address the many interacting exposure variables and potential issues of co-linearity in this complex data set.

Place, publisher, year, edition, pages
New York: Nature Publishing Group, 2015. Vol. 25, no 6, 580-592 p.
Keyword [en]
environmental exposure assessment, longitudinal birth cohort, indoor air quality, etiology of asthma, biomarkers, CHILD study
National Category
Public Health, Global Health, Social Medicine and Epidemiology
Research subject
Public Health Science
Identifiers
URN: urn:nbn:se:kau:diva-64026DOI: 10.1038/jes.2015.7ISI: 000363224900006PubMedID: 25805254OAI: oai:DiVA.org:kau-64026DiVA: diva2:1144793
Available from: 2017-09-27 Created: 2017-09-27 Last updated: 2017-10-05Bibliographically approved

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