This video gives a non-technical overview of the strengths and weaknesses of observational studies.

Not all scientific studies are created equal – David H. Schwartz.; 2014. Available at: https://www.youtube.com/watch?v=GUpd2HJHUt8. Accessed May 1, 2014.

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This Blog post was added to the website on 2014-05-01 and was last modified on 2020-02-29. You can find similar pages at Observational studies.

An earlier version of this page appears here.