February, 2003
© 2000, 2001 Scott S. Emerson, M.D., Ph.D.
Effect of
using incorrect estimates of statistical information at the design
stage
Using the specified sample size, the design alternative
will not be detected with the desired power
Using the
specified sample size, the alternative detected with the desired power
will not be the design alternative
In order to
detect the design alternative with the desired power, a different
sample size is needed