The nurse is enrolling subjects for a clinical drug trial in which subjects will be randomly assigned to either a treatment or a placebo group. The pills in both groups will be in identical packaging with identical appearance. The group that receives the intervention is the:

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The experimental group is the group that receives the intervention (in this case, the drug being tested). The treatment group is also sometimes used interchangeably with the experimental group. The control group, on the other hand, does not receive the intervention and is used as a comparison group to the experimental group. The dependent group and independent group are not commonly used terms in clinical research.

The Nurse Is Enrolling Subjects for a Clinical Drug Trial