Air pollution and cardiovascular admissions association in Spain: results within the EMECAS project
Por:
Ballester, F, Rodriguez, P, Iniguez, C, Saez, M, Daponte, A, Galan, I, Taracido, M, Arribas, F, Bellido, J, Cirarda, F, Canada, A, Guillen, J, Guillen-Grima, F, Lopez, E, Perez-Hoyos, S, Lertxundi, A, Toro, S and EMECAS Grp
Publicada:
1 abr 2006
Resumen:
Objective: To evaluate the short term effect of air pollution on
cardiovascular admissions in 14 Spanish cities
Methods: The period under study was from 1995 to 1999. Daily emergency
admissions for all cardiovascular diseases (CVD) and heart diseases (HD)
were obtained from hospital records, and the corresponding daily levels
of particulates, SO2, NO2, CO, and ozone were recorded. The magnitude of
association was estimated using Poisson generalised additive models
controlling for confounding and overdispersion. For each cause, lagged
effects, up to three days, of each pollutant were examined and combined
estimates were obtained. For ozone the analyses were restricted to the
warm period. One and two pollutant models were performed.
Results: Associations were more consistent in lag 0 ( concurrent day)
and 1 ( lag 0 - 1), except in the case of ozone where there was a more
delayed relation ( lag 2 - 3). For combined estimates an increase of 10
mu g/m(3) in the PM10 levels in lag 0 - 1 was associated with an
increase of 0.9% (95% CI: 0.4 to 1.5%) in the number of hospital
admissions for CVD, and 1.6% (0.8 to 2.3%) for HD. For ozone the
corresponding estimates for lag 2 - 3 were 0.7% (0.3 to 1.0) for CVD,
and 0.7% (0.1 to 1.2) for HD. An increase of 1 mg/m(3) in CO levels was
associated with an increase of 2.1% (0.7 to 3.5%) in CVD admissions,
and 4.2% (1.3 to 7.1%) in HD admissions. SO2 and NO2 estimates were
more sensitive in two pollutant models
Conclusions: A short term association between increases in daily levels
of air pollutants and the number of daily admissions for cardiovascular
diseases, with specificity for heart diseases, has been described in
Spanish cities.
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