Chapter 1: Nutrition: Everyday Choices
Critical Thinking
1.
The Good Heart Study is evaluating the relationship between a new miracle
drug and heart disease. Two hundred participants are divided into 2 equal
groups. Identical looking pills are administered to all participants. Group 1
receives 2 tablets of the miracle drug per day and group 2 receives 2
placebo tablets per day. After one month, half of the subjects in group 1
have blood cholesterol levels at or below the recommended levels. In group
2, 49 of the subjects have blood cholesterol levels at or less than the
recommendations.
a) How many subjects are in each group?
b) Is the study blinded?
c)
Does the miracle drug lower cholesterol?
d) What changes would you make to better control the study?