The metropolitan area of Mexico City, Mexico, has serious air pollution problems.
Although air contaminants may contribute to clinical asthma, there are at present no data on the relation between air pollution exposure and childhood asthma in Mexico City.
The authors reviewed data on emergency visits from January to June 1990 at one major pediatric hospital in Mexico City.
They used a Poisson regression model to study the relation between the number of daily emergency visits for asthma and air pollutant levels.
The levels of ozone and sulfur dioxide exposure were significantly associated with the number of emergency visits for asthma.
After adjustment for potential confounding factors, the multivariate regression model predicted that an increase of 50 ppb in the 1-hour maximum ozone level would lead to a 43% increase in the number of emergency visits for asthma on the following day.
Exposure to high ozone levels (>110 ppb) for 2 consecutive days increased the number of asthma-related emergency visits by 68 percent.
The results of this study suggest that ozone exposure is positively associated with the number of children's emergency visits for asthma in Mexico City.
Mots-clés Pascal : Pollution air, Milieu urbain, Toxicité, Asthme, Urgence, Consultation hospitalière, Enfant, Homme, Epidémiologie, Mexique, Amérique Centrale, Amérique, Teneur air ambiant, Appareil respiratoire pathologie, Bronchopneumopathie obstructive, Mexico
Mots-clés Pascal anglais : Air pollution, Urban environment, Toxicity, Asthma, Emergency, Hospital consultation, Child, Human, Epidemiology, Mexico, Central America, America, Ambient air concentration, Respiratory disease, Obstructive pulmonary disease
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 95-0228277
Code Inist : 002B03M02. Création : 09/06/1995.