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1 Polish Journal of Environmental Studies

1 2012

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Relative risk of total and cardiovascular morality in the eldery as related to short-term increases of PM2,5 concentrations in ambient air

100%

Kowalska M. , Skrzypek M. , Danso F. , Kasznia-Kocot J.

Polish Journal of Environmental Studies

2012

tom 21

nr 5

The aim of our study was to assess the impact of short-term ultrafine particle concentration changes in ambient air to daily total and cardiovascular mortality in the older population (65 years and above) living in Zabrze, a city located in the Silesia Region of Poland. The measure of this relationship was the relative risk (RR) of daily mortality related to a 10 ng/mJ increase in PM2.5 concentrations. It was determined during the study period from 2000-05 that 6,378 people aged 65 and above died in Zabrze. Cardiovascular diseases accounted for 61.9% of the total mortality during the same study period. The highest daily mortality was seen during the winter, which was more than the other remaining seasons. The relative risk of total and cardiovascular mortality were 1.004 (95%CI:-1.003-1.010) and 1.002 (95%CI:-1.011- 1.015), respectively. It was also shown that the risk increased with longer exposure times, with the highest value of RR related to two weeks exposure of the population. The daily risk of cardiovascular mortality in Zabrze, related to PM2.5 concentrations, is similar to values given by other authors. The obtained results suggest that longer exposures expressed by moving average concentration, from 3-days to 14-days, contribute to the highest risk of cardiovascular mortality in older inhabitants.