Mortality among World Trade Center Rescue and Recovery Workers, 2002 – 2011
Published Date:Jan 04 2016
Source:Am J Ind Med. 59(2):87-95.
Cause Of Death
Healthy Worker Effect
Proportional Hazards Models
September 11 Terrorist Attacks
World Trade Center Attack
Pubmed Central ID:PMC4715601
Funding:U10 OH008232/OH/NIOSH CDC HHS/United States
K01 ES019156/ES/NIEHS NIH HHS/United States
200-2011-39356/61/77/84/85/88/PHS HHS/United States
U10 OH008239/OH/NIOSH CDC HHS/United States
U10 OH008275/OH/NIOSH CDC HHS/United States
U10-OH008216/23/25/32/39/75/OH/NIOSH CDC HHS/United States
U10 OH008223/OH/NIOSH CDC HHS/United States
U10 OH008216/OH/NIOSH CDC HHS/United States
U10 OH008225/OH/NIOSH CDC HHS/United States
Rescue and recovery workers responding to the 2001 collapse of the World Trade Center (WTC) sustained exposures to toxic chemicals and have elevated rates of multiple morbidities.
Using data from the World Trade Center Health Program and the National Death Index for 2002 – 2011, we examined standardized mortality ratios (SMR) and proportional cancer mortality ratios (PCMR) with indirect standardization for age, sex, race, and calendar year to the U.S. general population, as well as associations between WTC-related environmental exposures and all-cause mortality.
We identified 330 deaths among 28,918 responders (SMR 0.43, 95% CI 0.39 – 0.48). No cause-specific SMRs were meaningfully elevated. PCMRs were elevated for neoplasms of lymphatic and hematopoietic tissue (PCMR 1.76, 95% CI 1.06 – 2.75). Mortality hazard ratios showed no linear trend with exposure.
Consistent with a healthy worker effect, all-cause mortality among responders was not elevated. There was no clear association between intensity and duration of exposure and mortality. Surveillance is needed to monitor the proportionally higher cancer mortality attributed to lymphatic/hematopoietic neoplasms.
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