Four circles, in differing colours, arranged in a square formation. The first grey circle contains an illustration of a microscope in its center. The second blue circle contains an illustration of the sun. The third yellow circle has an illustration of multiple hands arranged together. The final green circle has an illustrated play sign.

Good healthcare requires good evidence

Good randomized controlled trials (RCTs) provide reliable evidence that enables informed changes in healthcare practice. It must be made easier to do good RCTs to inform future care. 

The Good Clinical Trials Collaborative was set up to develop guidance to promote and enable good RCTs. Our draft guidance consultation ran from 4 August to 30 September 2021 and was accessed over 2000 times in more than 120 countries.

The English-language revised draft is now available in the Guidance section and by PDF download. We expect to publish the final guidance, following independent review, later in 2022, alongside updated translated versions.


What makes a good RCT?

We have identified five key principles that underpin our guidance. A good RCT should:


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