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double blind trial

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double blind trial

In medicine, method often used in clinical trials of new medicines. Patients are placed in groups using a randomization code and each group receives a different treatment or a placebo. Neither the investigator nor the patient knows which treatment is being administered during the trial. The randomization code is broken at the end of the trial and the results are analysed statistically. Double blind trials eliminate bias but they must be rigorously controlled using recognized ethical standards.



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