Fig. 3
Relative risks and 95 % confidence intervals of (A) total, (B) cardiovascular, (C) ischemic heart disease, (D) respiratory, and (E) cancer mortality for inter-quartile increases in PM2.5 and four PM2.5 components (4.54, 0.33, 1.67, 0.76, and 0.86 μg/m3 for PM2.5, EC, OC, sulfate, and nitrate, respectively) by lag in the 5-county Denver metropolitan region from 2003 through 2007