ABSTRACT
Objective To analyze the association between the concentration of ambient inhalable particulate matter (PM10) and population mortality for cerebrovascular diseases and to explore the impact of PM10 on cerebrovascular diseases.Methods Data including meteorological factors,air pollutants (NO2,SO2 and PM10) and cerebrovascular disease mortality in one district of Beijing from 2004 to 2008 were collected and both symmetric bidirectional case-crossover design and conditional logistic regression model were used to analyze the associations among them.Results After adjusting the influence of meteorological factors as daily average temperature and relative humidity,the single pollutant model showed that there was no significant lag effect.In the multipollutant model,the effect of the every 105.43 μg/m3 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,65 year-olds and in winter season.Conclusion Our data showed that elevated levels of ambient PM10was positively associated with the increase of cerebrovascular disease mortality.The elevated levels of ambient PM10 could lead to thc increase of the daily mortality on cerebrovascular diseases for females,elderly who were 65 or older and in winter seasons.