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Question 1

What are clinical trials used for?

Answer 1

Vaccines and drugs are subjected to clinical trials to establish their safety and effectiveness before being licensed for use.

Question 2

How do they not ruin the validity of the study?

Answer 2

By putting several protocols put into place.

Question 3

What are the protocols used in clinical trials?

Answer 3

Randomised selection of groups, placebo controlled trails and double-blind trials.

Question 4

How does randomised selection of groups work in clinical trials?

Answer 4

Volunteers are separated into groups, the selection of the groups is randomised to prevent bias based on age or gender.

Question 5

How does the placebo controlled trails work?

Answer 5

Two group of participants are set up, one group takes the real drug drug and the other takes a placebo. This allows valid comparison of the results.

Question 6

What is a placebo drug?

Answer 6

A drug that does not effect to the body, they are usually sugar pills, saline injection or something that will medically have no effect.

Question 7

Why does the group size matter into the clinical trial?

Answer 7

Because if the group size is small, the clinical trial can be declared unreliable.