This is the experimental design. The first drug trial design is the effectiveness test. This is the effectiveness test because it is controlled with placebo, not with active drugs.
It's designed like this, the first drug trial design is an effectiveness test, and this one is an effectiveness test because it's controlled with a placebo, not an active drug.
This is the design of this experiment. The first drug trial design is the effectiveness test. This is the effectiveness test, because it is compared with placebo, not with active drugs.<br>