The impact of ambient particulate matter (PM10) on the population mortality for cerebrovascular diseases

Abstract

The impact of ambient particulate matter (PM10) on the population mortality for cerebrovascular diseases Xuying Wang1, Fengming Dong1, Minghao Jin2, Xiaochuan Pan1 1 Department of Occupational and Environmental Health, School of Public Health, Peking University?Beijing, China 2 School of Public Health, PYONG YANG Medical University, KIMILSUNG University, Democratic People’s Republic of Korea Background: Epidemiological studies have reported the associations between increased ambient air pollution and cardiovascular mortality, morbidity and emergency department visits. But the studies of the impact of PM10 on the cerebrovascular mortality are few and the conclusions are not consistent. Aims: To examine the impact of ambient inhalable particulate matter (PM10) on cerebrovascular mortality in Beijing, during 2004-2008. Methods: Both symmetric bidirectional case-crossover design and conditional logistic regression model were used to analyze the associations between ambient PM10 and cerebrovascular mortality. Results: After adjusting the meteorological factors as daily average temperature and relative humidity, the single pollutant model showed that there was no significant lag effect. In the multi-pollutant model, the effect of the every interquartile increase of ambient PM10 had a larger impact on the daily death of the cerebrovascular diseases with statistically significant difference (P?0.05). The effect of ambient PM10 pollution on daily death of cerebrovascular diseases was significant for females, elderly who were 65 or older and winter season. Conclusion: Our data showed that elevated levels of ambient PM10 was positively associated with the increase of cerebrovascular disease mortality. The elevated levels of ambient PM10 could lead to the increase of the daily mortality on cerebrovascular diseases for females, elderly who were 65 or older and in winter season.