The analysis indicated a statistically significant association between PM10 and all of the alternative measures of mortality. The results suggest a 10-mg/m3 change in daily PM10 is associated with a 1–2% increase in natural mortality, a 1–2%
increase in cardiovascular mortality, and a 3–6% increase in respiratory mortality. These relative risks are generally
consistent with or greater than those reported in most studies undertaken in the United States.