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This week we will be exploring policy evaluation. Now, as we have discussed in the Collaborate sessions there is a hierarchy in study design. Random Clinical Trials have the least threats to internal validity, but depending on how they were sampled could have the greatest threats to external validity. As we evaluation epidemiological and experimental literature, you will begin to notice that no single policy or program is made from a single publication.
The United States Preventative Services Task Force (USPSTF) are responsible for performing huge meta-evaluations of policies regarding screening and other preventative medicine practice.
Go to the USPSTF's website:
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Select a disease or a health policy and read their statements. Also, read what their grading system means. What are your thoughts on the stance they have taken given the literature they evaluated to come to their decision? What types of research or other organizations have you found that disagree with their stance? What additional research needs to be done to provide a more definitive answer, if any?
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