[Step-by-Step] The drug AZT was the first effective treatment for AIDS. An important medical experiment demonstrated that regular doses of AZT delay the onset
Question: The drug AZT was the first effective treatment for AIDS. An important medical experiment demonstrated that regular doses of AZT delay the onset of symptoms in people whom HIV is present. The researchers who carried out this experiment wanted to know the following:
Does taking either 500 mg of AZT or 1500 mg of AZT per day delay the development of AIDS?
Is there any difference between the effects of taking these two doses?
The subjects were 1200 volunteers already infected with HIV but with no symptoms of AIDS when the study started.
Outline the design of the experiment.
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