sample size for partial replicate - USFDA [Power / Sample Size]

posted by niraj.bhatt – India, 2013-10-17 10:53 (4636 d 13:33 ago) – Posting: # 11669
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Dear All,

We have a data of partial replicate (TRR,RRT,RTR) pilot study and we have within-subject variability of reference formulation.

Now suppose we want to estimate sample size for pivotal partial replicate (TRR,RRT,RTR) study using pilot study results.

Can we use within-subject variability of reference formulation for sample size calculation of pivotal study?

If yes, can we use observed N or should it be multiplied by 0.75 (for 3 period partial replicate study design) or 0.5 (for 4 period fully replicate study design)?

Your suggestion in this regard will be highly appreciated.

Best regards,
Niraj

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