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.
-What measure of association should be calculated to determine the strength of the relationship between aspirin and colon cancer?

Question

Quizplus · Accepted Answer

In a case-control study, the odds ratio is the appropriate measure of association to determine the strength of the relationship between exposure (aspirin use) and outcome (colon cancer).

A Case-Control Study Was Conducted to Evaluate the Relationship Between