While high power is wanted in medical research, as in other
research, any good ethics or funding panel will query a very high
powered study.
I know power = 80% is a rule of thumb, but power = 99% is a waste of
resources (human and other) and, if the treatment works, exposes the
too many subjects to sub-optimum conditions.
Dr ZJ Nugent
Statistician/IT Manager
DHSRU, 9th Floor, Dental School
Park Place, Dundee, Tayside DD1 4HR
UK
tel 01382 425757
DHSRU Homepage http://www.dundee.ac.uk/dhsru/
Mailbase Discussion Lists: dental-health
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