Ozone Exposure and Asthma Attack in Children

Overview

Journal Front Pediatr

Specialty Pediatrics

Date 2022 Apr 22

PMID 35450107

Authors

Wanting Huang

JinZhun Wu

Xiaoliang Lin

Affiliations

Soon will be listed here.

Abstract

Background: Increasing evidence indicated that ozone (O) exposure could trigger asthma attacks in children. However, the effect of O at low concentrations is uncertain.

Purpose: This study aimed to explore the effects of O exposure at low concentrations on asthma attacks in children.

Methods: A total of 3,475 children with asthma attacks from the First Affiliated Hospital of Xiamen University were available for the analyses. Air pollution data and meteorological data in Xiamen during 2016-2019 were also collected. A case-crossover design and conditional logistic regression models were conducted to evaluate the association between asthma attacks and outdoor air pollution with lag structures (from lag 0 to lag 6) in both single and multi-pollutant models. Furthermore, we estimated the influence of various levels of O exposure on an asthma attack in three groups categorized by maximum daily 8-h sliding average ozone (O-8 h) (O-8 h ≥ 100 μg/m, O-8 h: 80-99 μg/m, O-8 h < 80 μg/m).

Results: For both single-pollutant models and multi-pollutant models, when O-8 h was higher than 80 μg/m, O exposure was increased the risk of acute asthma attacks on each day of lag. The effect of O on children with asthma was significant when O concentration was higher than 100 μg/m.

Conclusion: O concentration above 80 μg/m contributed to an increased risk of asthma attacks in children.

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