Association of allergic asthma emergency room visits with the main biological and chemical air pollutants

L. Makra, István Matyasovszky, Beatrix Bálint

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Joint effect of biological (pollen) and chemical air pollutants on asthma emergency room (ER) visits was analyzed for Szeged region of Southern Hungary. Our database of a nine-year period (1999-2007) includes daily number of asthma emergency room (ER) visits, and daily mean concentrations of CO, PM10, NO, NO2, O3 and SO2, furthermore two pollen variables (Ambrosia and total pollen excluding Ambrosia), as well. The analysis was performed for ER visits of asthma bronchiale using two age groups (adults and the elderly) of males and females for three seasons. Factor analysis was performed in order to clarify the relative importance of the pollutant variables affecting asthma ER visits. Asthma ER visits denote notably stronger associations with the pollutants in adult male than in adult female patients both for the pollen season of Ambrosia and the pollen-free season. Furthermore, adults are substantially more sensitive to severe asthma attack than the elderly for the season of total pollen excluding Ambrosia pollen. The joint effect of the chemical and pollen variables is the highest for the asthma ER cases in the pollen season of Ambrosia, basically due to the extra impact of the total pollen excluding Ambrosia pollen and partly due to Ambrosia pollen. A nonparametric regression technique was applied to discriminate between events of ER visit-no ER visit using pollen and chemical pollutants as explaining variables. Based on multiple correlations, the strongest relationships between ER visits and pollutants are observed during the pollen-free season. The elderly group with asthma bronchiale is characterized by weaker relationships between ER visits and pollutants compared to adults. Ratio of the number of correct decisions on the events of ER visit-no ER visit is lowest for the season of total pollen excluding Ambrosia pollen. Otherwise, similar conclusions hold as those received by multiple correlations.

Original languageEnglish
Pages (from-to)288-296
Number of pages9
JournalScience of the Total Environment
Volume432
DOIs
Publication statusPublished - Aug 15 2012

Fingerprint

Emergency rooms
Air Pollutants
asthma
pollen
Air
chemical
air pollutant
pollutant
Factor analysis
Carbon Monoxide
chemical pollutant

Keywords

  • Air pollution
  • Allergenic pollen
  • Asthma bronchiale
  • Emergency room (ER) visit
  • Patient number

ASJC Scopus subject areas

  • Environmental Chemistry
  • Pollution
  • Waste Management and Disposal
  • Environmental Engineering

Cite this

Association of allergic asthma emergency room visits with the main biological and chemical air pollutants. / Makra, L.; Matyasovszky, István; Bálint, Beatrix.

In: Science of the Total Environment, Vol. 432, 15.08.2012, p. 288-296.

Research output: Contribution to journalArticle

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