Assessing responses of cardiovascular mortality to particulate matter air pollution for pre-, during- and post-2008 Olympics periods

摘要: Abstract Background The link between particulate air pollution and cardiovascular (CVD) mortality has been investigated. However, there is little direct evidence that reduction measures which decrease would lead to a in CVD mortality. Objectives In Beijing, China, quality improvement strategies were developed actions taken before during the 2008 Olympic Paralympic Games. Taking advantage of this opportunity, aim study was assess effects changes (May 20–July 20, 2008), (August 1–September 2008) after (October 1–December 1, Olympics period. Methods Concentrations pollution, meteorology death counts obtained from official networks monitoring sites located on Peking University campus. Air with lags 0–4 days as well 5-day average cause-specific investigated for complete period 20–December using Quasi-Poisson regression models. Different gender age subgroups into account. Additionally, effect modification by mass origin second step, estimated three specific periods including an interaction term Results We observed large concentration decreases all measured pollutants unique intervention Beijing Olympics. For whole period, adverse 1-day delay exposure, e.g. 8.8% (95%CI: 2.7–15.2%) increase interquartile range ultrafine particles. more pronounced females, elderly cerebrovascular deaths, but not modified origin. sub-period analysis results suggested risks lowest Games where strongest have applied. Conclusions indicated due control led decreased risk Beijing. Our findings provide new insight efforts reduce ambient pollution.