Powering for Equivalency trial

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epichick

Posted: Thu Nov 23, 2006 2:08 pm

Guest

Hello,
Can anyone tell me how to power for an equivalence trial? I would like
to prove that two treatments are the same in terms of a continuous
outcome. How would I power for this. Anything greater than a 10%
difference would be considered clinically meaningful. Thank you.....

David Winsemius

Posted: Thu Nov 23, 2006 6:28 pm

Guest

"epichick" <rspiwak@gmail.com> wrote in news:1164305339.298595.78060@j72g2000cwa.googlegroups.com:

Quote:

"power analysis" "equivalence trial"

<http://epirev.oxfordjournals.org/cgi/reprint/24/1/39.pdf>
<http://www.bmj.com/cgi/content/full/313/7048/36?ijkey=93f0ceeae76a08f06d7aaffb8f6ace71bad1a500&keytype2=tf_ipsecsha>

--
David Winsemius

epichick

Posted: Thu Nov 23, 2006 6:51 pm

Guest

Thx....

David Winsemius wrote:

Quote:

"epichick" <rspiwak@gmail.com> wrote in news:1164305339.298595.78060@j72g2000cwa.googlegroups.com:

Hello,
Can anyone tell me how to power for an equivalence trial? I would like
to prove that two treatments are the same in terms of a continuous
outcome. How would I power for this. Anything greater than a 10%
difference would be considered clinically meaningful. Thank you.....

With a bit of googling for terms:
"power analysis" "equivalence trial"

http://epirev.oxfordjournals.org/cgi/reprint/24/1/39.pdf
http://www.bmj.com/cgi/content/full/313/7048/36?ijkey=93f0ceeae76a08f06d7aaffb8f6ace71bad1a500&keytype2=tf_ipsecsha

--
David Winsemius

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