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Environmental Health

, 9:8

First Online: 12 February 2010Received: 23 December 2008Accepted: 12 February 2010DOI: 10.1186-1476-069X-9-8

Cite this article as: López-Villarrubia, E., Ballester, F., Iñiguez, C. et al. Environ Health 2010 9: 8. doi:10.1186-1476-069X-9-8


BackgroundThe island factor of the cities of Las Palmas de Gran Canaria and Santa Cruz de Tenerife, along with their proximity to Africa and their meteorology, create a particular setting that influences the air quality of these cities and provides researchers an opportunity to analyze the acute effects of air-pollutants on daily mortality.

MethodsFrom 2000 to 2004, the relationship between daily changes in PM10, PM2.5, SO2, NO2, CO, and ozone levels and daily total mortality and mortality due to respiratory and heart diseases were assessed using Generalized Additive Poisson models controlled for potential confounders. The lag effect up to five days as well as the concurrent and previous day averages and distributed lag models were all estimated. Single and two pollutant models were also constructed.

ResultsDaily levels of PM10, PM2.5, NO2, and SO2 were found to be associated with an increase in respiratory mortality in Santa Cruz de Tenerife and with increased heart disease mortality in Las Palmas de Gran Canaria, thus indicating an association between daily ozone levels and mortality from heart diseases. The effects spread over five successive days. SO2 was the only air pollutant significantly related with total mortality lag 0.

ConclusionsThere is a short-term association between current exposure levels to air pollution and mortality total as well as that due specifically to heart and respiratory diseases in both cities. Risk coefficients were higher for respiratory and cardiovascular mortality, showing a delayed effect over several days.

AbbreviationsPMparticulate matter

GCVgeneralized cross validation

DLMdistributed lag model

SO2sulphur dioxide

NO2nitrogen dioxide


COcarbon monoxide

dfdegrees of freedom

ICD-10International Classification of Diseases, Tenth Revision.

Electronic supplementary materialThe online version of this article doi:10.1186-1476-069X-9-8 contains supplementary material, which is available to authorized users.

Elena López-Villarrubia, Ferran Ballester, Carmen Iñiguez and Nieves Peral contributed equally to this work.

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Autor: Elena López-Villarrubia - Ferran Ballester - Carmen Iñiguez - Nieves Peral


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