Which type of study evaluates an association using the population rather than the individual as the unit of analysis?
A) Cohort study
B) Ecological study
C) Case-control study
D) Cross-sectional study
Correct Answer:
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Q1: Which type of observational study examines one
Q3: Which of the following is a method
Q4: The main disadvantage of using which type
Q5: Because cases serve as their own controls,
Q6: The high degree of validity in which
Q7: Which type of studies typically take a
Q8: Because observational studies are often infeasible because
Q9: Both the cross-sectional and ecological designs have
Q10: Epidemiological studies that try to determine the
Q11: Which term includes both surveillance, whose purpose
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