Before receiving her second clinical trial treatment, study participant Sheila asks the clinical trial nurse, "What type of drug am I receiving?" The nurse responds, "Although I do have this information, for purposes of the study I cannot provide it." This is an example of a(n) ____.

Question

Quizplus · Accepted Answer

In a single-blind procedure, the participant is not aware of which treatment they are receiving, but the researchers do know. This is to prevent bias in the participants' reporting of symptoms or outcomes.

Before Receiving Her Second Clinical Trial Treatment, Study Participant Sheila