To investigate whether outdoor air pollution levels in London influence daily mortality.
Design-Poisson regression analysis of daily counts of deaths, with adjustment for effects of secular trend, seasonal and other cyclical factors, day of the week, holidays, influenza epidemic, temperature, humidity, and autocorrelation, from April 1987 to March 1992.
Pollution variables were particles (black smoke), sulphur dioxide, ozone, and nitrogen dioxide, lagged 0-3 days.
Outcome measures-Relative risk of death from all causes (excluding accidents), respiratory disease, and cardiovascular disease.
Ozone levels (same day) were associated with a significant increase in all cause, cardiovascular, and respiratory mortality ; the effects were greater in the warm season (April to September) and were independent of the effects of other pollutants.
In the warm season an increase of the eight hour ozone concentration from the 10th to the 90th centile of the seasonal range (7-36 ppb) was associated with an increase of 3.5% (95% confidence interval 1.7 to 5.3), 3.6% (1.04 to 6.1), and 5.4% (0.4 to 10.7) in all cause, cardiovascular, and respiratory mortality respectively.
Black smoke concentrations on the previous day were significantly associated with all cause mortality, and this effect was also greater in the warm season and was independent of the effects of other pollutants.
For black smoke an increase from the 10th to 90th centi...
Mots-clés Pascal : Pollution air, Royaume Uni, Europe, Mortalité, Facteur risque, Homme
Mots-clés Pascal anglais : Air pollution, United Kingdom, Europe, Mortality, Risk factor, Human
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 96-0187217
Code Inist : 002B03M02. Création : 199608.