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Glossary of Terms

We know that many of the concepts used on this site can be difficult to understand. For that reason, we have provided you with a glossary to help you make sense of the terms used in Comparative Effectiveness Research. Every word that is defined in this glossary should appear highlighted throughout the Web site. When you come upon a highlighted term and would like to read the full definition, you can either click on the word to visit the glossary or roll your mouse over the word for a pop-up definition.

 

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Open-Label Study

Definition: A clinical research study in which the participant, health care professional, and others know the drug and dose being given. The research study is not "blinded."

Example: For example, during the very early testing of drugs or devices, studies are usually open label. These tests are conducted on a small number of persons to determine whether the drug appears to have acceptable safety and effectiveness for the medical condition being studied.

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