Question

Suppose that we were going to conduct a study to determine if there is an decrease in risk of getting lung cancer based on whether the person eats strawberries several times a week. in the group(1 that eats strawberries regularly, we find than 5 out of 2000 get lung cancer. in the group(2 that does not eat strawberries regularly, we find that 5 out of 1000 get lung cancer. what is the sample relative risk?

Answer 1

Relative risk  [RR] = [no of diseased patient in group 1/total no of people in the group 1] divided by [no of diseased patient in group 2/total no of people in group 2]
RR =[ 5/2000] divided by [5/1000] = 0,0025/0.005 = 0.5
Therefore the relative risk of the sample is 0.5.