An official website of the United States government.

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

Concept Breadcrumbs

Preferred Term:

placebos

Definition:
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.
Concept Schemes:
NALT Core
Broader Concept:
Entry Terms:
  • sham treatment
URI:
https://lod.nal.usda.gov/nalt/26922
Download this Concept:
RDF/XMLCreated 2006-01-19, last modified 2015-03-09