A study attempts to determine whether a new medication is effective at lowering blood pressure. Forty subjects with hypertension who volunteer to participate in the study are to be given both the new medication and a placebo. The order in which each subject receives the treatment is randomized, and the subjects do not know which treatment they are getting. Each treatment is administered for four weeks. At the end of each four-week period, a subject's blood pressure is recorded.
What is described in this scenario?

Question

Quizplus · Accepted Answer

This scenario describes a matched pairs experiment because each subject acts as their own control by receiving both the treatment and the placebo in a randomized order, allowing for direct comparison within the same individual.

A Study Attempts to Determine Whether a New Medication Is