Are placebos used in cancer treatment clinical trials?


The use of placebos as comparison or "control" interventions in cancer treatment trials is rare.

If a placebo is used by itself, it is because no standard treatment exists. In this case, a trial would compare the effects of a new treatment with the effects of a placebo.

More often, however, placebos are given along with a standard treatment. For example, a trial might compare the effects of a standard treatment plus a new treatment with the effects of the same standard treatment plus a placebo.

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