Question

The population etiologic fraction for a particular disease from Factor X alone is five times greater than that from Factor Y alone. If the relative risk associated with Factor X is 2, and with Factor Y is 20, which of the following statements is true?
A. The risk of developing the disease is greater in those exposed to Factor X only than in those exposed to Factor Y only.
B. Fewer persons are exposed to Factor Y than to Factor X.
C. The proportion of the disease in the population attributable to Factor Y is greater than that attributable to Factor X.
D. More persons are exposed to Factor Y than to Factor x.

Answer 1

Answer:

D. More persons are exposed to Factor Y than to Factor x.

Explanation:

From the information given above, the population of the etiological fraction of the particular disease from Factor X alone being more than 5 times shows that, it will take Factor Y x5 for every paricular disease from FactorX.

On the otherhand, with risk associated with the disease being 20, this shows that the chances of getting the disease is very high due to high risk factor when compared with FactorX. This goes ahead to show that more people would be exposed to the particular disease from Factor Y when compared to Factor X.