Bookmark and Share

Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down at the end of May, and its replacement, statalist.org is already up and running.


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: st: random allocation three-way cross-over design


From   Stas Kolenikov <skolenik@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: random allocation three-way cross-over design
Date   Sat, 1 May 2010 10:42:25 -0500

On Sat, May 1, 2010 at 8:30 AM, Hadewijch Vandenheede
<hvdheede@vub.ac.be> wrote:
> I wish to generate a randomization scheme for a 3-way cross-over study with
> three treatments.
>
> I'm trying to establish such scheme with 'ralloc' but it doesn't seem to
> work out, because it can only handle 2-way cross-over designs.
>
> Is there another way of doing this?

I know very little about experiment design (although I took a couple
of classes back in grad school 10 years ago), but I imagine that if
you can get the complete design matrix, you can permute its rows and
randomly assign your experimental units to these rows.

-- 
Stas Kolenikov, also found at http://stas.kolenikov.name
Small print: I use this email account for mailing lists only.
*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/


© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   Site index