Airborne Coarse Particles and Mortality

摘要: Some recent epidemiologic studies suggest a stronger effect of fine particles (PM2.5) than coarser particulate matter. To examine the support for such differential effect, authors conducted daily time-series analysis mortality in relation to measurements PM2.5, PM10, and PM10-2.5 southwestern Mexico City years 1992–1995. A generalized linear model based on Poisson regression was used control weather periodic cycles, average concentration previous five days index particle exposure. The mean concentrations PM 2.5 PM10 were 27.4 μg m−3 44.6 m-3, respectively, 17.2 m-PM10 highly correlated with both coarse fractions, but 10–2.5 rather weakly each other (correlation coefficient 0.52). All three size fractions associated individually mortality: 10-μg m3 increase Supported by cooperative agreements CR-820076 an...