What is a double blind crossover study?

Answer 1

I want to know if a medication has the desired effect. I'm going to give half the subjects the 'live' med, and half will get a placebo. The subjects will not know which one they are getting. That's one level of "blind". Studies show that there is a measurable affect based on the fact that the person distributing the med's knows who is getting the med and who is getting the placebo. So I am going to package the med's and give them to the distributing nurse, and the nurse will not know who is getting the med and who is getting the placebo. That is "double blind" model.

Answer 2

A double-blind study means that neither the test subject (human) or the researcher administering the study knows whether the test subject is receiving the experimental treatment or the control treatment.

Often in human drug tests, the control treatment will be a placebo.

This ensures that neither party can make any expectations as to whether they should or shouldn't be seeing results. This is important because sometimes researchers will botch their results to coincide with their hypothesis. This also ensures that both control and experimental groups experience the "placebo effect" more or less equally

Answer 3

A double blind trial means that both the subject and the researcher are unaware of which subjects are being given a placebo and which are recieving the trial drug.

This is aimed at reducing the amount of bias in the trial.

Answer 4

When doing an experiment that involves human beings, such as testing an experimental drug, the experimenter and the subject may, even subconsciously, set expectations as to what the result will be. Some subjects will receive the trial drug, while others receive a placebo (a substance that has no effect). In a double-blind test, neither the experimenter nor the subject knows which is which, removing the possibility of subconscious bias affecting the results.

Answer 5

A double blind crossover study is a type of research design where neither the participants nor the researchers know who is receiving the treatment and who is receiving the placebo. In a crossover design, participants serve as their own control group by receiving both the treatment and the placebo at different stages of the study. This design helps to minimize bias and increase the validity of the research findings.

Answer 6

This strict type of clinical trial eliminates any possibility of bias. Neither the participant or the researcher knows if the treatment or a placebo has been administered.

Answer 7

The study team nor the subject is aware who is getting the study drug vs the placebo

Answer 8

A double-blind study may be augmented by a cross-over experiment, in which experimental subjects unknowingly become control subjects, and vice versa, at some point in the study