Exposure to traffic noise and air pollution and risk for febrile seizure: a cohort study

OBJECTIVES: Exposure to traffic noise and air pollution is suspected to increase susceptibility to viral infections – the main triggering factor for febrile seizures. No studies have examined these two exposures in relation to febrile seizures. We aimed to investigate whether exposure to road traffi...

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Main Authors: Dorrit Hjortebjerg, Anne-Marie Nybo Andersen, Matthias Ketzel, Ole Raaschou-Nielsen, Mette Sørensen
Format: Article
Language:English
Published: Nordic Association of Occupational Safety and Health (NOROSH) 2018-09-01
Series:Scandinavian Journal of Work, Environment & Health
Subjects:
Online Access: https://www.sjweh.fi/show_abstract.php?abstract_id=3724
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author Dorrit Hjortebjerg
Anne-Marie Nybo Andersen
Matthias Ketzel
Ole Raaschou-Nielsen
Mette Sørensen
author_facet Dorrit Hjortebjerg
Anne-Marie Nybo Andersen
Matthias Ketzel
Ole Raaschou-Nielsen
Mette Sørensen
author_sort Dorrit Hjortebjerg
collection DOAJ
description OBJECTIVES: Exposure to traffic noise and air pollution is suspected to increase susceptibility to viral infections – the main triggering factor for febrile seizures. No studies have examined these two exposures in relation to febrile seizures. We aimed to investigate whether exposure to road traffic noise and air pollution are associated with risk of febrile seizures in childhood. METHODS: From our study base of 51 465 singletons from a national birth cohort, we identified 2175 cases with febrile seizures using a nationwide registry. Residential address history from conception to six years of age were found in national registers, and road traffic noise (L_den) and air pollution (NO_2) were modeled for all addresses. Analyses were done using Cox proportional hazard model with adjustment for potential confounders, including mutual exposure adjustment. RESULTS: An interquartile range (IQR) increase in childhood exposure to road traffic noise and air pollution was associated with an 11% [incidence rate ratio (IRR) 1.11, 95% confidence interval (CI) 1.04–1.19) and 5% (IRR 1.05, 95% CI 1.02–1.07) higher risk for febrile seizures, respectively, after adjustment for potential confounders. Weaker tendencies were seen for pregnancy exposure. In models with mutual exposure adjustment, the estimates were slightly lower, with IRR of 1.08 (95% CI 1.00–1.16) and 1.03 (95% CI 0.99–1.06) per IQR increase in childhood exposure to road traffic noise and air pollution, respectively. CONCLUSIONS: This study suggests that residential exposure to road traffic noise and air pollution is associated with higher risk for febrile seizures.
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spelling doaj.art-30efc2e361c249439071ee34e7a6daf12022-12-21T17:14:18ZengNordic Association of Occupational Safety and Health (NOROSH)Scandinavian Journal of Work, Environment & Health0355-31401795-990X2018-09-0144553954610.5271/sjweh.37243724Exposure to traffic noise and air pollution and risk for febrile seizure: a cohort studyDorrit Hjortebjerg0Anne-Marie Nybo AndersenMatthias KetzelOle Raaschou-NielsenMette SørensenDanish Cancer Society Research Center, Strandboulevarden 49, 2100 Copenhagen Ø, Denmark.OBJECTIVES: Exposure to traffic noise and air pollution is suspected to increase susceptibility to viral infections – the main triggering factor for febrile seizures. No studies have examined these two exposures in relation to febrile seizures. We aimed to investigate whether exposure to road traffic noise and air pollution are associated with risk of febrile seizures in childhood. METHODS: From our study base of 51 465 singletons from a national birth cohort, we identified 2175 cases with febrile seizures using a nationwide registry. Residential address history from conception to six years of age were found in national registers, and road traffic noise (L_den) and air pollution (NO_2) were modeled for all addresses. Analyses were done using Cox proportional hazard model with adjustment for potential confounders, including mutual exposure adjustment. RESULTS: An interquartile range (IQR) increase in childhood exposure to road traffic noise and air pollution was associated with an 11% [incidence rate ratio (IRR) 1.11, 95% confidence interval (CI) 1.04–1.19) and 5% (IRR 1.05, 95% CI 1.02–1.07) higher risk for febrile seizures, respectively, after adjustment for potential confounders. Weaker tendencies were seen for pregnancy exposure. In models with mutual exposure adjustment, the estimates were slightly lower, with IRR of 1.08 (95% CI 1.00–1.16) and 1.03 (95% CI 0.99–1.06) per IQR increase in childhood exposure to road traffic noise and air pollution, respectively. CONCLUSIONS: This study suggests that residential exposure to road traffic noise and air pollution is associated with higher risk for febrile seizures. https://www.sjweh.fi/show_abstract.php?abstract_id=3724 exposurecohort studynoiseair pollutiontraffic noisefebrile seizure
spellingShingle Dorrit Hjortebjerg
Anne-Marie Nybo Andersen
Matthias Ketzel
Ole Raaschou-Nielsen
Mette Sørensen
Exposure to traffic noise and air pollution and risk for febrile seizure: a cohort study
Scandinavian Journal of Work, Environment & Health
exposure
cohort study
noise
air pollution
traffic noise
febrile seizure
title Exposure to traffic noise and air pollution and risk for febrile seizure: a cohort study
title_full Exposure to traffic noise and air pollution and risk for febrile seizure: a cohort study
title_fullStr Exposure to traffic noise and air pollution and risk for febrile seizure: a cohort study
title_full_unstemmed Exposure to traffic noise and air pollution and risk for febrile seizure: a cohort study
title_short Exposure to traffic noise and air pollution and risk for febrile seizure: a cohort study
title_sort exposure to traffic noise and air pollution and risk for febrile seizure a cohort study
topic exposure
cohort study
noise
air pollution
traffic noise
febrile seizure
url https://www.sjweh.fi/show_abstract.php?abstract_id=3724
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