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Selected characteristics of the Fire Department of the City of New York study population, including World Trade Center exposed and unexposed workers, October 2, 2001, to December 31, 2011
aPercentages may not sum to 100 due to rounding.
bA total of 52 individuals with missing smoking status were defined as “never smokers.”
cA total of 1,011 individuals with missing education information were defined as “high school.”
SD = standard deviation
