NTIDs with high variability [Design Issues]

posted by ioanam – Romania, 2010-06-07 15:52 (5858 d 02:09 ago) – Posting: # 5452
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Which is the most appropriate design for a narrow therapeutic index drug with very high intra-subject variability?

For example, we have an immunosuppressive agent with an intra-subject CV% > 45%.
Using a standard two – way crossover design with acceptance interval tightened (90.00 – 111.11%), we will have a sample size of more than 300 subjects :-(.

It is possible to use a replicate design in this situation?

Thank you,
Jo

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