Suppose that we were going to conduct a study to determine i

Suppose that we were going to conduct a study to determine if there is an increased risk of getting lung cancer based on whether a person exercises regularly or not. In the group that exercises regularly (1), we find than 2 out of 100 get lung cancer. In the group(2) that does not exercise regularly, we find that 5 out of 100 get lung cancer. What is the sample relative risk? 0.4 0.04 0.03 0.01

Solution

Suppose that we were going to conduct a study to determine if there is an increased risk of getting lung cancer based on whether a person exercises regularly or not. In the group that exercises regularly (1), we find than 2 out of 100 get lung cancer. In the group(2) that does not exercise regularly, we find that 5 out of 100 get lung cancer.

What is the sample relative risk?   0.4   0.04   0.03   0.01

Relative risk =(2/100)/ (5/100) = 0.4