U.S. Centers for Disease Control and Prevention (CDC) Epidemiologist Study Practice Questions
The free U.S. Centers for Disease Control and Prevention (CDC) Epidemiologist questions that deal with study, with answers and explanations. The full bank and the timed practice test cover every topic the exam asks about.
Question #3
In a study, an epidemiologist finds that individuals who consume more than two servings of fruit per day have a lower incidence of heart disease. What type of study design is likely used?
Correct answer: C
Explanation
A cohort study follows individuals over time to observe outcomes related to their exposures.
Question #7
In a study of vaccine effectiveness, what is the best comparison group?
Correct answer: B
Explanation
Comparing vaccinated individuals with non-vaccinated individuals helps measure vaccine effectiveness.
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