A politician asks an epidemiologist how many cases of coronary heart disease can be prevented if they manage to eliminate the exposure to smoking in city A.The epidemiologists explain that,if they eliminate smoking,they could prevent 22% cases of coronary heart disease.What measure of association was used to answer this question?

A) Population attributable risk
B) Odds ratio
C) Relative risk
D) Incidence rate
E) Risk ratio

Population Attributable Risk

The proportion of disease cases in the entire population that can be attributed to a particular risk factor.

Exposure

The state of being subjected to some effect or influence, often used in context of exposure to diseases, chemicals, or other risk factors.

Coronary Heart Disease

A disease characterized by the narrowing or blockage of the coronary arteries, usually due to atherosclerosis, leading to reduced blood flow to the heart muscle.