Posted 28 January 2018
How do you convert a simple saline solution into a useful treatment for people with Parkinson’s disease? Tell them it’s a drug that costs $100 per dose. And if you want to make it even more effective, tell them it costs $1,500 instead.
That’s what researchers from the University of Cincinnati discovered in an unusual clinical trial. Instead of testing a placebo against an actual drug, they pitted two placebos against each other. The only difference between the two sham treatments was their purported price.
Both of the placebos improved motor function compared with a base line test. But when patients got the $1,500-per-dose placebo, their improvement was 9% greater than when they got the $100-per-dose placebo, the researchers reported.
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