The type of study that compares a group of individuals with a disease to another similar but healthy group is called a(n)
A. double-blind study.
B. clinical trial.
C. intervention study.
D. case control study.
Answer:D
The type of study that compares a group of individuals with a disease to another similar but healthy group is called a(n)
A. double-blind study. B. clinical trial. C. intervention study. D. case control study.