3.8 Clinical Trials

Question 1

Why are vaccines and drugs used in a clinical trial?

Answer 1

to establish their safety and
effectiveness before being licensed for use.

Question 2

Name 3 Designs involved in clinical trials

Answer 2

1. Randomized
2. Double Blind
3. Placebo controlled protocols.

Question 3

Describe Randomized

Answer 3

Subjects in clinical trials are divided into
groups in a equal way to reduce bias in
the distribution of characteristics such as age and gender.

Question 4

Describe Double blind

Answer 4

neither the subjects nor the researchers know which
group subjects are in to prevent biased
interpretation of the results.

Question 5

Describe Placebo controlled

Answer 5

One group of subjects receives the vaccine or drug while
the second group receives a placebo-control
to ensure valid comparisons.

Question 6

Why is group size important?

Answer 6

Results are compared to determine whether there are
any statistically significant differences
between the groups.