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Re-read the statement from the reading above: “The key feature of analytic epidemiology is a comparison...

Re-read the statement from the reading above: “The key feature of analytic epidemiology is a comparison group.” What is a comparison group and how does it work?

Please note this is in reference to AIDS

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Descriptive epidemiology can identify patterns among cases and in populaces by time, spot and individual. From these perceptions, disease transmission experts create theories about the reasons for these examples and about the variables that expansion danger of disease. In expository the study of disease transmission, a comparison group refers to a group of units (e.g., people, study halls) that get either no treatent or an elective treatment. The motivation behind a comparison group is to fill in as a wellspring of counterfactual causal deduction. At first, you have to analyze the effect of the perticular treatment you want to evaluate and then compare the results with individual without any treatment or who had been administered with different treatment protocol.

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