The concentration-response between long-term PM_(2.5) exposure and mortality; A meta-regression approach

摘要

Background. Long-term exposure to ambient fine particulate matter (= 2.5 mu g/m(3) in aerodynamic diameter; PM2.5) is significantly associated with increased risk of premature mortality. Our goal was to provide an updated meta-analysis of all-cause and cause-specific mortality associated with exposure to PM2.5 and to better estimate the risk of death as a function of air pollution levels.