You are an epidemiologist studying the impact of obesity (exposure) on risk of h

Question

You are an epidemiologist studying the impact of obesity (exposure) on risk of heart attack
(outcome). Your work shows you that obesity raises blood pressure because the heart has to work harder to pump blood in larger bodies. Your work also shows you that the strain of high blood pressure on the heart increases the risk of heart attack in obese people.

A)

This information tells you that high blood pressure is a confounder in the relationship between obesity and heart attack.

B)

This information tells you that high blood pressure is an effect modifier of the relationship between obesity and heart attack.

C)

This information tells you that high blood pressure is a mediator in the relationship between obesity and heart attack.

D)

This information tells you that high blood pressure is causes obesity.

E)

None of the above

A)

This information tells you that high blood pressure is a confounder in the relationship between obesity and heart attack.

B)

This information tells you that high blood pressure is an effect modifier of the relationship between obesity and heart attack.

C)

This information tells you that high blood pressure is a mediator in the relationship between obesity and heart attack.

D)

This information tells you that high blood pressure is causes obesity.

E)

None of the above

Explanation / Answer

A is the correct answer, as it is associated with both obesity and heart attack. Hence high blood pressure can be consider a confounding parameter in the relationship between obesity and heartattack.

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