Researchers Randomly Assigned Patients with Severe Acne to One of Two

Multiple Choice

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