An epidemiologic study evaluated the relationship between caffeine and developing high blood pressure. The relative risk of the group drinking five caffeinated drinks a day in comparison to the group drinking no caffeinated drinks a day was 0.99. This means that if a person drinks five caffeinated drinks a day, he or she ____.
A)has a 99 percent chance of developing high blood pressure
B)has a 99 percent chance of NOT developing high blood pressure
C) is not at increased risk of high blood pressure
D) will almost certainly develop particularly severe high blood pressure

Question

An epidemiologic study evaluated the relationship between caffeine and developing high blood pressure. The relative risk of the group drinking five caffeinated drinks a day in comparison to the group drinking no caffeinated drinks a day was 0.99. This means that if a person drinks five caffeinated drinks a day, he or she ____.​
A)​has a 99 percent chance of developing high blood pressure
B)​has a 99 percent chance of NOT developing high blood pressure
C) ​is not at increased risk of high blood pressure
D) ​will almost certainly develop particularly severe high blood pressure

Quizplus · Accepted Answer

A relative risk of 0.99 means that there is no significant difference in the risk of developing high blood pressure between the group drinking five caffeinated drinks a day and the group drinking no caffeinated drinks a day. Therefore, drinking five caffeinated drinks a day does not increase the risk of developing high blood pressure.

An Epidemiologic Study Evaluated the Relationship Between Caffeine and Developing