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Randomised controlled trials

BMJ 1999; 319 doi: (Published 28 August 1999) Cite this as: BMJ 1999;319:584
  1. Douglas Carnall (
  1. BMJ

    This week, a series of four articles considers the place of the randomised controlled trial as we approach the second century of experience with the concept. Its basic principle is genuine uncertainty as to which treatment arm of the trial it would be in a patient's best interests to enter. This is not necessarily an easy concept to transmit, …

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