An introduction to group sequential methods: planning and multi-aspect optimization
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A group sequential clinical trial design can be an attractive option when planning a pivotal trial as this approach has the ability to stop the trial early for success, whilst also being well accepted from a regulatory review perspective. Compared to a single stage design there are more moving parts to consider and optimise when planning a group sequential trial. This tutorial briefly outlines the group sequential methodology before detailing some of the key operating characteristics and how these can be estimated, optimised and ultimately presented to decision makers when aligning on a final study design.
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