How and why is randomisation used to test new health interventions?

How and why is randomisation used to test new health interventions? A health intervention is something that aims to make a change on a particular health outcome. To find out how a health intervention compares to the alternative available intervention researchers use a randomised controlled trial. In this video we explain what randomisation is, how it is done, and why it is important for researchers to use randomised controlled trials to make a fair, unbiased, and reliable comparison of health interventions. For more information contact: [email protected]