The association between ambient air pollution and daily mortality in Beijing after the 2008 olympics: a time series study.

Generally, cumulative exposure lag01 had larger effects than single-day exposure (lag0 to lag4) and the effects of cumulative exposures (from lag01 to lag04) showed a decreasing trend.

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We referred to the Beijing Municipal Statistical Yearbook−2007 and Beijing Municipal Statistical Yearbook−2010 and found that the cardiovascular morality rates were 129.82 per 100,000 in 2007 and 156.97 per 100,000 in 2010, and the respiratory mortality rates were 58.83 per 100,000 in 2007 and 60.92 per 100,000 in 2010, respectively, indicating an increasing trend of death from chronic diseases [34] , [35] .

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