One study looked at 500 individuals exposed to a high dose of an aflatoxin (grou

Question

One study looked at 500 individuals exposed to a high dose of an aflatoxin (group 1 carcinogen) for 5 years. During the 5 years 52 individuals were diagnosed with cancer. Of the individuals diagnosed with cancer 15 died before the study ended. There were a total of 20 people who died that were not diagnosed with cancer before the studies end.

Calculate the overall cumulative incidence of morality

Calculate the prevalence of cancer in this population

Calculate the case-fatality risk for those with cancer in this population

Explanation / Answer

Out of 500 people, 15 died due to cancer and 20 died due to non cancer reasons

So overall cummulative incidence of mortality = 15+ 20 out of 500 so 35 out of 500 meaning 7 in 100

Prevalnce of cancer = 52 out of 500 so 10.4 out of 100 is the prevalnce rate of cancer

Case fatality risk = 15 deaths out of 52 so 15/52 = 0.28846 so 28.85 out of 100 is the case fatality risk for those with cancer in this population

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