Date:         Tue, 6 Jun 2006 14:58:34 -0400
Reply-To:     Ya Huang <ya.huang@AMYLIN.COM>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         Ya Huang <ya.huang@AMYLIN.COM>
Subject:      Re: Clinical Trial Ns for Multiple Arms
Comments: To: Jake Booter <jakeboot@GMAIL.COM>

Again, this is a question that has to be answered by your statistician
(or medical writer for that matter), preferably prespecified in the SAP.
You will likely end up doing two tables to satisfy both needs, and the
burden is for statistician/medical writer to explain the difference.

On Tue, 6 Jun 2006 14:50:10 -0400, jakeboot@gmail.com <jakeboot@GMAIL.COM>
wrote:

>I have a general question about multiple arm studies, specifically when a
>patient switches doses --how to count the Ns.  It seems that if a subject
>switches doses, that the subject should be counted in each treatment group.
>Is there a standard for this such that the subject is counted in each
dosage
>the subject is on vs. the Ns are the same for each dose (thus reflecting
the
>overall Number of Subjects (regardless of dose)?
>
>Any information on this is appreciated.
>
>--
>Jake
>---------------------
>Change the way you look at things, and the things you look at will change.
>Dr. Dyer