All of the following statements regarding case control and coho studies are true, Except -
Cohos are chosen based on history of `Exposure'
Coho studies require longer time frame than case control studies
Coho studies are suitable to investigate 'rare' disease
Coho studies yield information about more than one disease
Ans. is 'c' i.e., Coho studies are suitable to investigate 'rare' disease o Coho studies are inappropriate when the disease or exposure under investigation is rare.