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. 2017 Feb 8;5:2. doi: 10.3389/fpubh.2017.00002

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Copyright © 2017 Liu, Yip, Zeig-Owens, Weakley, Webber, Schwartz, Prezant, Weiden and Hall.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Crude (unadjusted) incidence rates of aerodigestive conditions by World Trade Center (WTC) exposure intensity over 10 years among World Trade Center-exposed Fire Department of the City of New York (FDNY) firefighters. Incidence rates are per 100 person-years among 8,968 FDNY firefighters. Years are in 9/11 years, e.g., “Year 1” corresponds to September 11, 2001–September 10, 2002.