Analysis of the relationships between environmental factors (aeroallergens air pollution and weather) and asthma emergency admissions to a hospital in Mexico City

A - Papers appearing in refereed journals

Rosas, I., McCartney, H. A., Payne, R. W., Calderon, C., Lacey, J., Chapela, R. and Ruiz-Velazco, S. 1998. Analysis of the relationships between environmental factors (aeroallergens air pollution and weather) and asthma emergency admissions to a hospital in Mexico City. Allergy. 53 (4), pp. 394-401.

AuthorsRosas, I., McCartney, H. A., Payne, R. W., Calderon, C., Lacey, J., Chapela, R. and Ruiz-Velazco, S.
Abstract

There have been several studies of the relationships between environmental factors, particularly air pollution, and attacks of asthma. Most of these studies have ignored the potential confounding effects of aeroallergens such as pollens and fungal spores. We report a statistical analysis of the relationships between emergency admissions for asthma to a hospital in Mexico City and daily average airborne concentrations of pollen, fungal spores, air pollutants (O-3, NO2, SO2, and particulates) and weather factors. Asthma admissions had a seasonal pattern with more during the wet season (May-October) than the dry season (November-April). There were few statistical associations between asthma admissions and air pollutants for the three age groups studied (children under 15 years, adults, and seniors [adults over 59 years]) in either season. Grass pollen was associated with child acid adult admissions for both the wet and dry seasons, and fungal spores were associated with child admissions during both the wet and dry seasons. The analysis was done with environmental data averaged over the day of admission and the 2 previous days. Our results suggest that aeroallergens may be statistically associated more strongly with asthma hospital admissions than air pollutants and may act as confounding factors in epidemiologic studies.

KeywordsAllergy; Immunology
Year of Publication1998
JournalAllergy
Journal citation53 (4), pp. 394-401
Digital Object Identifier (DOI)doi:10.1111/j.1398-9995.1998.tb03911.x
PubMed ID9574882
Open accessPublished as non-open access
Funder project or code205
207
424
445
ISSN01054538
PublisherWiley

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