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"Placebos" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings). Descriptors are arranged in a hierarchical structure, which enables searching at various levels of specificity.

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Any dummy medication or treatment. Although placebos originally were medicinal preparations having no specific pharmacological activity against a targeted condition, the concept has been extended to include treatments or procedures, especially those administered to control groups in clinical trials in order to provide baseline measurements for the experimental protocol.

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This graph shows the total number of publications written about "Placebos" by people in this website by year, and whether "Placebos" was a major or minor topic of these publications.
Bar chart showing 177 publications over 40 distinct years, with a maximum of 11 publications in 2008 and 2011
To see the data from this visualization as text, click here.