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Epidemiology News Briefs - April 28, 2017

The American Council on Science and Health Explains Epidemiology

For a schematic look at the hierarchy of evidence, readers may want to view a pyramid figure published by the American Council on Science and Health. It seeks to present the different levels of evidence that can be created by different types of information and studies ranging all the way from in vitro test tube research at the bottom of the pyramid to systematic reviews and meta-analyses at the top. The question the article seeks to resolve for readers is which epidemiological studies are the most reliable and why. The picture presented is oversimplified,, but it is one attempt to better communicate with the public about epidemiology.

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