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Characteristics of the firefighter population from the Fire Department of the City of New York (n=10,074) by ever having elevated PTSD risk, 2001–2005
aDuration information was missing on 2,083 individuals.
bEducation information was missing on 387 individuals.
PTSD = posttraumatic stress disorder
CI = confidence interval
Ref. = referent
WTC = World Trade Center
