A clinical drug trial is being conducted on 3000 people using a double-blind research design. Which clinical trial phase does this study represent?
a. Phase 1
b. Phase 2
c. Phase 3
d. None of the phases are applicable
ANS: C
A phase 1 clinical drug trial involves healthy people. Phase 2 uses diseased or ill volunteers. Phase 3 uses a sample of people using a double-blind research design to eliminate research bias.
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