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Re: placebo alexandra_k

Posted by ed_uk2010 on February 16, 2015, at 8:26:08

In reply to Re: placebo, posted by alexandra_k on February 15, 2015, at 21:14:48

> i think i have a confusion about this. i probably just need to learn a bit more about trials etc... i'm confused about the role of double blinding... why that would make a difference if placebo effect was impervious to knowledge.

Placebo effects do depend at least partially on expectation. Double blind trials are the most reliable because they reduce the ability of both patients and investigators to have expectations.

 

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URL: http://www.dr-bob.org/babble/20150129/msgs/1076730.html