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Mortality among World Trade Center Rescue and Recovery Workers, 2002 – 2011
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Jan 04 2016
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Source: Am J Ind Med. 59(2):87-95.
[PDF-238.83 KB]
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Alternative Title:Am J Ind Med
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Description:Background
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.
Methods
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.
Results
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.
Conclusions
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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Pubmed ID:26727695
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Pubmed Central ID:PMC4715601
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