Which of the following statements is true concerning medical research studies?
A) Subjects are not randomly assigned to either a treatment group or control group.
B) To be considered reliable, the same results must be obtained by no other researchers conducting the same study.
C) Researchers assign participants to either a treatment group or control group in order of when the participants register for the study.
D) Clinical studies attempt to establish cause-and-effect relationships.

Question

Quizplus · Accepted Answer

Clinical studies attempt to establish cause-and-effect relationships. This is an essential aspect of medical research because it helps determine if a particular treatment is causing the observed results or if it is a coincidence. Random assignment to treatment and control groups is also a common practice in medical research to ensure that any observed differences between the two groups are due to the treatment and not some other factor. Multiple researchers obtaining the same results is not necessary for reliability, but it does increase the confidence in the findings. Participants are typically assigned to groups randomly or according to specific criteria laid out by the researchers, not by registration order.

Which of the Following Statements Is True Concerning Medical Research