what is a 'randomized','controlled','blind/double blind'study?

Subject: what is a 'randomized','controlled','blind/double blind'study?

Date: Tue Sep 18 23:26:57 2001
Posted by winnie
Grade level: grad (non-science) School: No school entered.
City: toronto State/Province: No state entered. Country: canada
Area of science: Medicine
ID: 1000870017.Me

Message:


and how is a 'retrospective chart review' different?

Re: what is a 'randomized','controlled','blind/double blind'study?

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