Researchers randomly assigned patients with severe acne to one of two treatments: the standard topical antibiotic (our control) or a new antibiotic taken orally (the treatment). Six months later an evaluation of skin problems was made by a doctor who did not know which medication subjects had been given. Which best describes this study design?
A) Paired using repeated measures
B) Paired using matching
C) Independent groups

Question

Quizplus · Accepted Answer

The study design involves two independent groups: one receiving the standard topical antibiotic and the other receiving the new oral antibiotic. The groups are independent because the patients were randomly assigned to one of the two treatments, and there is no indication of pairing or matching between subjects.

Researchers Randomly Assigned Patients with Severe Acne to One of Two