TL51: Margin selection in non-inferiority trials
*Chul Ahn, FDA 

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Non-inferiority trials are not simply underpowered superiority trials. In general, non-inferiority trials are more challenging to design, conduct and interpret. In this roundtable, we will discuss and share the experience on some of the practical issues with non-inferiority trials, especially, the selection of non-inferiority margin.