UNIT 3 - KA8

Question 1

Why are vaccines and drugs subjected to clinical trials

Answer 1

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

Question 2

What is the design of clinical trials to test vaccines and drugs

Answer 2

The design of clinical trials to test vaccines and drugs involve randomised, double -blind and placebo controlled protocols

Question 3

Randomised

Answer 3

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

Question 4

Double blind trial

Answer 4

In a double blind trial neither the subjects not the researchers know which groups subjects are in to prevent biased interpretation of results

Question 5

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

The importance of group size in reducing experimental error and establishing statistical significance

Answer 6

At the end of the trial, results from the two groups which must be of a suitable size to reduce the magnitude of experimental error are compared to determine whether there are any statistically significant differences between the groups