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Associations of red and processed meat with survival among patients with cancers of the upper aerodigestive tract and lung
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https://doi.org/10.1016/j.nutres.2016.01.006Abstract
The effect of red and processed meats on cancer survival is unclear. We sought to examine the role of total and processed red meat consumption on all-cause mortality among patients with cancers of the upper aerodigestive tract (UADT) and lung, in order to test our hypothesis that red or processed meat was associated with overall mortality in these patients. Using data from a population-based case-control study conducted in Los Angeles County, we conducted a case-only analysis to examine the association of red or processed meat consumption on mortality after 12 years of follow-up, using a diet history questionnaire. Cox regression was used to estimate adjusted hazard ratios (HRs) with 95% confidence intervals (CIs), adjusting for potential confounders. Of 601 UADT cancer cases and 611 lung cancer cases, there were 248 and 406 deaths, respectively, yielding crude mortality rates of 0.07 and 0.12 deaths per year. Comparing the highest with lowest quartile of red meat consumption, the adjusted HR was 1.64 (95% CI, 1.04-2.57) among UADT cancer cases; for red or processed meat, the adjusted HR was 1.76 (95% CI, 1.10-2.82). A dose-response trend was observed. A weaker association was observed with red meat consumption and overall mortality among lung cancer cases. In conclusion, this case-only analysis demonstrated that increased consumption of red or processed meats was associated with mortality among UADT cancer cases and WAS weakly associated with mortality among lung cancer cases.
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