Andy,
I think Dennis has good points but I also have consulted in projects
that had to deal with local IRB's that get hung up on alpha (so I feel
your pain) You might want to look at:
Browne, R. H. (1995) On the use of a pilot sample for sample size
determination,
Statistics in Medicine 14,
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dennis roberts wrote:
or, think about it this way ... what IF your p value had been
.001 based on your pilot data ... why do any more? well, there
are lots of reasons ...
depends on the field and the research question.
The association between Reye's syndrome and aspirin
was found in the
Andy Avins wrote:
Does anyone have any thoughts or references for sample size calculations
for pilot studies?
In my neck of the woods, pilot studies are shake-down cruises
for figuring out to design the formal study. Sample size is
mostly a matter of covenience, logistics,...
If power
