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I heard that Randomised Control Trial (RCT) is useful in examining the effectiveness of an intervention. Could you please introduce a bit more about it?

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Discussion thread: Services for Offenders and Drug Abusers
Wing Cheung
8 April 2021
I heard that Randomised Control Trial (RCT) is useful in examining the effectiveness of an intervention. Could you please introduce a bit more about it?

I heard that Randomised Control Trial (RCT) is useful in examining the effectiveness of an intervention. Could you please introduce a bit more about it?

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cathywong190@gmail.com
8 April 2021

Glad to know.

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Wing Cheung
8 April 2021

Your reply helps me a lot! Many thanks!

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cathywong190@gmail.com
8 April 2021

Thank you for the great question. RCT originally was used in drug trials but now increasingly used in human services. It involves randomly allocating some participants to a group that receives an intervention and others to a group that doesn't receive it (known as the "intervention" and "control/comparison" groups). The purpose of randomization is to attribute outcomes to the intervention instead of any other factors influencing those outcomes to avoid bias.

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