To determine which comedians raked in the most money over the 12-month span, we turned to the 2007 edition of Forbes' Most Powerful Celebrity list, which ranks actors, athletes, models and comedians based on their media exposure (magazine covers as well as TV and radio mentions), Web presence (number of Google hits) and earnings.
None of the research groups that have worked on developing these models has felt that it was important to include the much weaker effect of exposure to ETS, even though a number of them have assessed this association.