Question

a close friend has joined a clinical trial. when you ask her about the types of treatment she might be given, she tells you that neither she nor the doctor running the trial will know until the process has been completed. what type of trial has she joined?
○ epidemiological
○ peer reviewed
○ unsafe
○ theoretical
○ double - blind

Explanation:

In a double - blind clinical trial, neither the participants (the patient, in this case the friend) nor the researchers (the doctor running the trial) know which treatment the participant is receiving until the trial is completed. An epidemiological study focuses on the distribution of diseases in populations, peer - reviewed refers to a process of evaluating research by experts, “unsafe” is not a type of clinical trial design, and a theoretical trial is not a standard clinical trial type. So the correct option is the double - blind trial.

Answer:

double - blind