9-11 Research: How Do We Plan to Study 9/11 Exposures and Resulting Cancer Risk to WTC Workers?

World Trade Center (WTC) rescue and recovery workers enrolled in the WTC Health Program (WTCHP) were exposed to a complex mix of pollutants and carcinogens. Data on WTC responders were linked the tumor registries of New York, New Jersey, Connecticut, and Pennsylvania. Standardized incidence ratios (SIRs) were calculated to compare cancer by site in responders with that predicted for the general population adjusted for age, sex, and ethnicity/race.