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Double-blind trial

A clinical trial design in which neither the participating individuals nor the study staff know which participants are receiving the experimental drug and which are receiving either placebo or another therapy. Double-blind trials are thought to produce objective results, since the expectations of the doctor and the participant about the experimental drug do not affect the outcome.

See also:
Single-blind trial
Randomised trial
Open-label trial
Controlled trial
Placebo-controlled trial
Clinical trial

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