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blinding / masking

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Term Main definition
blinding / masking
Procedure in which one or more parties to the clinical investigation are kept unaware of the treatment assignment(s).
Single blinding usually refers to the subject(s) being unaware of the treatment assignment(s).
Double blinding usually refers to the subject(s), investigator(s), monitor and, in some cases, centralized assessors being unaware of the treatment assignment(s).