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A trial design in which neither the researcher nor the patient knows the details of the treatment the patient was randomly assigned to.
An international trial.
A trial that takes place at multiple centers.
A trial design in which the researcher knows the full details of the treatment, and so does the patient.
A placebo-controlled trial design.
A randomized trial design.
A trial design in which the researcher knows which treatment the patient was randomly assigned to but the patient does not.
A trial that takes place at a single center.
A trial design in which neither the researcher, the person administering the therapy nor the patient knows the details of the treatment the patient was randomly assigned to.