Air pollution, pollens, and daily admissions for asthma in London 1987-92.
Background-A study was undertaken to investigate the relationship between daily hospital admissions for asthma and air pollution in London in 1987-92 and the possible confounding and modifying effects of airborne pollen.
Methods-For all ages together and the age groups 0-14,15-64 and 65+years, Poisson regression was used to estimate the relative risk of daily asthma admissions associated with changes in ozone, sulphur dioxide, nitrogen dioxide and particles (black smoke), controlling for time trends, seasonal factors, calendar effects, influenza epidemics, temperature, humidity, and autocorrelation.
Independent effects of individual pollutants and interactions with aeroallergens were explored using two pollutant models and models including pollen counts (grass, oak and birch).
In all-year analyses ozone was significantly associated with admissions in the 15-64 age group (10 ppb eight hour ozone, 3.93% increase), nitrogen dioxide in the 0-14 and 65+age groups (10 ppb 24 hour nitrogen dioxide, 1.25% and 2.96%, respectively), sulphur dioxide in the 0-14 age group (10 mug/m3 24 hour sulphur dioxide, 1.64%), and black smoke in the 65+age group (10 mug/m3 black smoke, 5.60%). Significant seasonal differences were observed for ozone in the 0-14 and 15-64 age groups, and in the 0-14 age group there were negative associations with ozone in the cool season. (...)
Mots-clés Pascal : Asthme, Admission hôpital, Pollution air, Angleterre, Grande Bretagne, Royaume Uni, Europe, Pollen, Homme, Allergène, Incidence, Exploration, Appareil respiratoire pathologie, Bronchopneumopathie obstructive
Mots-clés Pascal anglais : Asthma, Hospital admission, Air pollution, England, Great Britain, United Kingdom, Europe, Pollen, Human, Allergen, Incidence, Exploration, Respiratory disease, Obstructive pulmonary disease
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 98-0470380
Code Inist : 002B11B. Création : 19/02/1999.