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Causes of death among cancer patients as a function of calendar year, age, and time after diagnosis

Date

09 Oct 2016

Session

Poster display

Presenters

Nicholas Zaorsky

Citation

Annals of Oncology (2016) 27 (6): 474-482. 10.1093/annonc/mdw387

Authors

N.G. Zaorsky, T. Churilla, B.L. Egleston, S.G. Fisher, J.A. Ridge, E.M. Horwitz, J.E. Meyer

Author affiliations

  • Radiation Oncology, Fox Chase Cancer Center, 19111 - Philadelphia/US
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Resources

Abstract 883

Background

Our objectives are to characterize the causes of death among cancer patients as a function of: (I) calendar year, (II) patient age, and (III) time after diagnosis. The results would: (1) characterize patient risk to die of cancer- and non-cancer-death; (2) identify those who might profit from intense screening for second cancers; and (3) identify cancers that would most benefit from further research.

Methods

We used death certificate data in SEER Stat 8.2.1 to categorize cancer patient death as being due to index-cancer, non-index-cancer, and non-cancer cause, in the USA from 1973 to 2012. In addition, data were characterized with standardized mortality ratios (SMRs), which provide the relative risk of death as compared to all persons in the USA. A total of 28 cancers and 13 non-cancer causes of death were analyzed. A minimum of 1,000 person-years-at-risk were necessary for analysis of each disease site.

Results

With respect to objective I, there were 1,895,788 deaths: 1,065,324 due to index-cancer, 204,453 due to non-index-cancer, and 626,011 not due to cancer. Over the entire time period, the greatest relative decrease in index-cancer death (generally from > 60% to  40%) were stable among patients with cancers of the liver, pancreas, esophagus, and lung, and brain. Non-cancer causes of death were highest in patients with cancers of the colorectum, bladder, kidney, endometrium, breast, prostate, testis; >40% of deaths were from heart disease. For objectives II/III, the cancers with high SMRs tended to be of immunologic/hematologic origin; and lung cancer. The highest SMRs were from non-bacterial infections, particularly among  1,000, p

Conclusions

The risk of death from index- and non-index-cancers varies widely among primary sites. Risk of non-cancer deaths now surpasses that of cancer deaths, particularly for young patients in the year after diagnosis.

Clinical trial identification

Legal entity responsible for the study

N/A

Funding

N/A

Disclosure

All authors have declared no conflicts of interest.

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