A case-control study was conducted to evaluate the relationship between aspirin use and the risk of colon cancer. Two thousand (2,000) cases and 2,000 controls were enrolled in the study. One thousand eight hundred (1,800) of the cases reported using aspirin in the past while 1,200 of the controls reported using aspirin in the past. Set up the 2 by 2 table for these data.
-Which of the following is the appropriate interpretation of the measure of association calculated in question two?
A) The excess risk of colon cancer among people who have used aspirin is "x."
B) People who have used aspirin are "x" times as likely to develop colon cancer as compared to never-users.
C) People who have colon cancer are "x" times as likely to use aspirin as compared to those who do not have colon cancer.
Correct Answer:
Verified
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