A study found that liver cancer rates per 100,000 males among cigarette smokers and nonsmokers in a major U.S. city were 48.0 and 25.4, respectively. The relative risk of developing liver cancer for male smokers compared to nonsmokers is

Question

Quizplus · Accepted Answer

Relative risk (RR) = incidence rate in exposed group/incidence rate in unexposed group.

Here, RR = 48.0/25.4 = 1.89.

Therefore, the relative risk of developing liver cancer for male smokers compared to nonsmokers is 1.89, or choice A.

A Study Found That Liver Cancer Rates Per 100,000 Males