Short-term relationship between air pollution and mortality in 13 Spanish cities
Por:
Ballester, F, Iniguez, C, Saez, M, Perez-Hoyos, S, Daponte, A, Ordonez, J, Barcelo, M, Taracido, M, Arribas, F, Bellido, J, Cambra, K, Canada, A and Guillen, J
Publicada:
22 nov 2003
Categoría:
Medicine (miscellaneous)
Resumen:
BACKGROUND AND OBJECTIVE: EMECAM is a collaborative project that seeks
to evaluate the short-term effects of air pollution on mortality in
Spain.
MATERIAL AND METHOD: We collected data for air pollutants (particles and
gases), daily mortality (total except external, cardiovascular and
respiratory causes) and co-variables (temperature, humidity, influenza
and calendar variables) in 13 Spanish cities. The magnitude of the
association in every city was estimated using GAM under a Poisson
distribution. Combined estimates for each cause and pollutant were
obtained under `fixed effects' and `random effects' models.
RESULTS: An increase of 10 (g/m(3) in the levels of the average of the
concurrent and one day lag for black smoke was associated with a 0.8%
(Cl: 0.4-1.1) increase in mortality. The same increase in the
concentration of SO2 was associated with a 0.5% (Cl: 0.1-1.0) increase
in daily deaths, and a 0.6% (Cl; 0.3-0.8) increase in the case of NO2.
An increase of 1 mg/m(3) in the levels of CO was associated with an
increase of 1.5% (CI: 0.5-2.6) in daily deaths.
CONCLUSIONS: There is a short-term association between increases of
daily levels of air pollutants and the number of daily deaths in Spanish
cities. Key words: Air pollution. Mortality. Cardiovascular diseases.
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