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EPIDEMIOLOGY QUESTION Recently, Australian researchers conducted a study of the relationship between optimism and colon cancer...

EPIDEMIOLOGY QUESTION

Recently, Australian researchers conducted a study of the relationship between optimism and colon cancer survival. Their hypothesis was that colon cancer patients who had a positive outlook on life would have a lower five-year cumulative incidence of mortality. The study included 100 recently diagnosed colon cancer patients who underwent psychological testing and were found to have a optimistic outlook on life and 100 recently diagnosed colon cancer patients who underwent the same psychological tests and were found to have a pessimistic outlook on life. By the end of five years of follow-up, 50 of the 100 patients with the optimistic outlook and 75 of the 100 patients with the pessimistic outlook had died from colon cancer.

  • Set up and fill in the two by two table using these data.
  • What is the prevalence of colon cancer in the study population?
  • Compare the cumulative incidence of mortality in the optimistic group to the cumulative incidence of mortality in the pessimistic group using a ratio measure of association.
  • State in words your interpretation of the result you found in part c.
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Answer #1

ANSWER око Died Did hot die 1oo 60 optimistic 50 100 25 75 Pessimistic Total goo 195 The rate of death in optimistic People C

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