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Chronic effects of ambient air pollution on lung function among Chinese children

Objectives To examine the association between long-term exposure to air pollution and lung function among Chinese schoolchildren in Southern China (Hong Kong). Methods We conducted a cross-sectional study among 3168 schoolchildren (aged 8–10 years) in 3 districts in Hong Kong. Annual means of ambien... Full description

Journal Title: Archives of disease in childhood 2013, Vol.98 (2), p.128-135
Main Author: Gao, Yang
Other Authors: Chan, Emily Y Y , Li, Li Ping , He, Qi Qiang , Wong, Tze Wai
Format: Electronic Article Electronic Article
Language: English
Subjects:
Quelle: Alma/SFX Local Collection
Publisher: London: BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health
ID: ISSN: 0003-9888
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recordid: cdi_proquest_miscellaneous_1551621064
title: Chronic effects of ambient air pollution on lung function among Chinese children
format: Article
creator:
  • Gao, Yang
  • Chan, Emily Y Y
  • Li, Li Ping
  • He, Qi Qiang
  • Wong, Tze Wai
subjects:
  • Abridged Index Medicus
  • air pollution
  • Air Pollution - adverse effects
  • Air quality
  • Analysis of Variance
  • Asian Continental Ancestry Group
  • Biological and medical sciences
  • Child
  • chronic effect
  • Cohort Studies
  • Company distribution practices
  • Cross-Sectional Studies
  • Demographic aspects
  • Distribution
  • Environment. Living conditions
  • Environmental Exposure - adverse effects
  • Female
  • Forced Expiratory Flow Rates - physiology
  • Forced Expiratory Volume - physiology
  • General aspects
  • Health aspects
  • Hong Kong
  • Humans
  • Lung - physiopathology
  • lung function
  • Male
  • Medical sciences
  • Miscellaneous
  • Pediatric respiratory diseases
  • Prevention and actions
  • Public health. Hygiene
  • Public health. Hygiene-occupational medicine
  • Respiratory Tract Diseases - etiology
  • Respiratory Tract Diseases - physiopathology
  • Sex Factors
ispartof: Archives of disease in childhood, 2013, Vol.98 (2), p.128-135
description: Objectives To examine the association between long-term exposure to air pollution and lung function among Chinese schoolchildren in Southern China (Hong Kong). Methods We conducted a cross-sectional study among 3168 schoolchildren (aged 8–10 years) in 3 districts in Hong Kong. Annual means of ambient PM10 (particulate matter
language: eng
source: Alma/SFX Local Collection
identifier: ISSN: 0003-9888
fulltext: fulltext
issn:
  • 0003-9888
  • 1468-2044
url: Link


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creatorGao, Yang ; Chan, Emily Y Y ; Li, Li Ping ; He, Qi Qiang ; Wong, Tze Wai
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descriptionObjectives To examine the association between long-term exposure to air pollution and lung function among Chinese schoolchildren in Southern China (Hong Kong). Methods We conducted a cross-sectional study among 3168 schoolchildren (aged 8–10 years) in 3 districts in Hong Kong. Annual means of ambient PM10 (particulate matter <10 µm), SO2, NO2 and O3 from 1996 to 2003 were used to estimate the individual exposure of the subjects. Children's lung function was measured for forced vital capacity (FVC), forced expiratory volume in 1 s (FEV1), forced expiratory flow between 25% and 75% of FVC (FEF25–75) and forced expiratory flow at 75% of FVC (FEF75). Analysis of covariance was performed separately by gender to estimate the impact of air pollution on lung function, with adjustment for socioeconomic characteristics, respiratory morbidities, height and weight, physical activity level, indoor air contaminants and short-term exposure to the air pollutants. Results After controlling for potential confounding factors, FEV1, FEF25–75 and FEF75 for boys in a high-pollution district (HPD) were significantly lower than those in a low-pollution district (LPD) by 3.0%, 7.6% and 8.4%, respectively. No significant differences were found for girls. Results from the comparison between a moderate-pollution district (MPD) and the HPD were similar. There were no differences between children in the LPD and MPD, except that a higher FEF75 was found in boys in the MPD. PM10 is the primary pollutant responsible for the lung function deficit. Asthmatic children were more vulnerable to exposure to air pollution. Conclusions Long-term exposure to higher ambient air pollution levels was associated with lower lung function in Chinese schoolchildren, especially among boys. Adverse effects were observed on large and small airways, with a stronger effect on the latter.
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publisherLondon: BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health
subjectAbridged Index Medicus ; air pollution ; Air Pollution - adverse effects ; Air quality ; Analysis of Variance ; Asian Continental Ancestry Group ; Biological and medical sciences ; Child ; chronic effect ; Cohort Studies ; Company distribution practices ; Cross-Sectional Studies ; Demographic aspects ; Distribution ; Environment. Living conditions ; Environmental Exposure - adverse effects ; Female ; Forced Expiratory Flow Rates - physiology ; Forced Expiratory Volume - physiology ; General aspects ; Health aspects ; Hong Kong ; Humans ; Lung - physiopathology ; lung function ; Male ; Medical sciences ; Miscellaneous ; Pediatric respiratory diseases ; Prevention and actions ; Public health. Hygiene ; Public health. Hygiene-occupational medicine ; Respiratory Tract Diseases - etiology ; Respiratory Tract Diseases - physiopathology ; Sex Factors
ispartofArchives of disease in childhood, 2013, Vol.98 (2), p.128-135
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descriptionObjectives To examine the association between long-term exposure to air pollution and lung function among Chinese schoolchildren in Southern China (Hong Kong). Methods We conducted a cross-sectional study among 3168 schoolchildren (aged 8–10 years) in 3 districts in Hong Kong. Annual means of ambient PM10 (particulate matter <10 µm), SO2, NO2 and O3 from 1996 to 2003 were used to estimate the individual exposure of the subjects. Children's lung function was measured for forced vital capacity (FVC), forced expiratory volume in 1 s (FEV1), forced expiratory flow between 25% and 75% of FVC (FEF25–75) and forced expiratory flow at 75% of FVC (FEF75). Analysis of covariance was performed separately by gender to estimate the impact of air pollution on lung function, with adjustment for socioeconomic characteristics, respiratory morbidities, height and weight, physical activity level, indoor air contaminants and short-term exposure to the air pollutants. Results After controlling for potential confounding factors, FEV1, FEF25–75 and FEF75 for boys in a high-pollution district (HPD) were significantly lower than those in a low-pollution district (LPD) by 3.0%, 7.6% and 8.4%, respectively. No significant differences were found for girls. Results from the comparison between a moderate-pollution district (MPD) and the HPD were similar. There were no differences between children in the LPD and MPD, except that a higher FEF75 was found in boys in the MPD. PM10 is the primary pollutant responsible for the lung function deficit. Asthmatic children were more vulnerable to exposure to air pollution. Conclusions Long-term exposure to higher ambient air pollution levels was associated with lower lung function in Chinese schoolchildren, especially among boys. Adverse effects were observed on large and small airways, with a stronger effect on the latter.
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29Prevention and actions
30Public health. Hygiene
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34Sex Factors
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abstractObjectives To examine the association between long-term exposure to air pollution and lung function among Chinese schoolchildren in Southern China (Hong Kong). Methods We conducted a cross-sectional study among 3168 schoolchildren (aged 8–10 years) in 3 districts in Hong Kong. Annual means of ambient PM10 (particulate matter <10 µm), SO2, NO2 and O3 from 1996 to 2003 were used to estimate the individual exposure of the subjects. Children's lung function was measured for forced vital capacity (FVC), forced expiratory volume in 1 s (FEV1), forced expiratory flow between 25% and 75% of FVC (FEF25–75) and forced expiratory flow at 75% of FVC (FEF75). Analysis of covariance was performed separately by gender to estimate the impact of air pollution on lung function, with adjustment for socioeconomic characteristics, respiratory morbidities, height and weight, physical activity level, indoor air contaminants and short-term exposure to the air pollutants. Results After controlling for potential confounding factors, FEV1, FEF25–75 and FEF75 for boys in a high-pollution district (HPD) were significantly lower than those in a low-pollution district (LPD) by 3.0%, 7.6% and 8.4%, respectively. No significant differences were found for girls. Results from the comparison between a moderate-pollution district (MPD) and the HPD were similar. There were no differences between children in the LPD and MPD, except that a higher FEF75 was found in boys in the MPD. PM10 is the primary pollutant responsible for the lung function deficit. Asthmatic children were more vulnerable to exposure to air pollution. Conclusions Long-term exposure to higher ambient air pollution levels was associated with lower lung function in Chinese schoolchildren, especially among boys. Adverse effects were observed on large and small airways, with a stronger effect on the latter.
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