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Definition of Open-label trial

Open-label trial Definition from Medicine Dictionaries & Glossaries
Hepatitis Central (TM) Liver Disease Medical Glossary
The opposite of a double-blind trial. In open label trials, the effectiveness of a treatment is determined with full knowledge of whether or not the patient is taking the medication. Because the expectations of the investigator and patient can subtlely influence the results of such trials, they are considered less useful than double blind trials
Aids Glossary
a clinical trial of a drug where researchers and patients know which drug is being administered. (also see double-blind, and clinical trial.)
Glossary of HIV/AIDS-Related Terms
A clinical trial<!-- (see) --> in which doctors and participants know which drug or vaccine is being administered.
HIV Vaccine Glossary
a clinical trial in which doctors and participants know which vaccine is being administered to all participants.
Open-label trial Definition from Encyclopedia Dictionaries & Glossaries
English Wikipedia - The Free Encyclopedia
An open-label trial or open trial is a type of clinical trial in which both the researchers and participants know which treatment is being administered. This contrasts with single blind and double blind experimental designs, where participants are not aware of what treatment they are receiving (researchers are also unaware in a double blind trial).

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