To avoid overestimating the impact of the policy scenarios in this analysis, EPA made a number of adjustments before implementing the CEF assumptions in the four scenarios reported here.
To avoid overestimating the impact of the policy scenarios in this analysis, EPA made some adjustments before the CEF assumptions were reported.
More recently, several studies have found that the practice of examining the effects on a single day basis may significantly understate the risk of short-term exposures (Schwartz, 2000; Zanobetti et al, 2002).