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Resources for patients and the public

What is a randomised trial and why are they important?

The following external resources provide background information about randomised controlled trials.

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Introductions to randomisation and randomised controlled trials:

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How clinical trials are planned and organised (CRUK)

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How trial results are analysed and shared 

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What is trials methodology research? (MRC-NIHR Trials Methodology Research Partnership)

Why is transparent reporting of randomised trials important?

A short video explaining what we mean by trial "reporting", and why it is important that researchers share information about their trials.

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Click here to download a transcript (pdf).

What to look for when you read a report of a randomised trial

Click the icons below to explore the most important details to look for when you read a report of a randomised trial, and why this information matters.

Key: things to think about when considering...

Can I trust the results of the trial?

What do the results mean for patients?

Is the trial relevant and important to me?

Further reading

Check out the "That's a Claim!" website from Informed Health Choices for more in-depth information about how to critically evaluate healthcare research 

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The 2025 update of SPIRIT and CONSORT, and this website, are funded by the MRC-NIHR: Better Methods, Better Research [MR/W020483/1]. The views expressed are those of the authors and not necessarily those of the NIHR, the MRC, or the Department of Health and Social Care.

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