In community intervention studies, it is important for the investigator to evaluate whether a program has achieved its intended results before assuming the benefits of the intervention.
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Q4: Randomized controlled trials at the community level
Q5: A therapeutic trial involves the study of
Q6: Treatment crossover refers to any change of
Q7: The purpose of the washout period is
Q8: An example of a famous heart disease
Q10: External validity is not connected with the
Q11: Controlled clinical trials enable researchers to:
A) test
Q12: In contrast to observational studies, intervention studies
Q13: To assess clinical end points, investigators:
A) compare
Q14: The Stanford Five-City Project, a major community
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