Statalist


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

Re: st: sample size estimates for multilevel models


From   David Airey <david.airey@Vanderbilt.Edu>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   Re: st: sample size estimates for multilevel models
Date   Wed, 13 May 2009 12:54:45 -0500

Sounds bitter rather than practical, but I empathize. :)

Sent from my iPhone

On May 13, 2009, at 12:26 PM, Richard Goldstein <richgold@ix.netcom.com> wrote:

Thanks but ...

Although I bought the biggest Mac available, and although I have attached external hard drives, and will need to attach some more, I still don't really want to give up any room to any version of Windows -- esp. since my dislike of Windows and its instability were what moved me to the Mac

If I have to do that I will -- but I definitely don't want to do that

Rich

David Airey wrote:
.
I run software on Windows on my Mac as needed, like SAS. Works fine with Parallels 4 and XP or Vista. If you still have your valid licenses, why not use them?
-Dave
On May 13, 2009, at 12:02 PM, Richard Goldstein wrote:

Having recently switched from Windows to a Mac, I find myself missing one thing from the Windows world -- software for sample size estimation for multilevel models (models that one would use, e.g., -xtmixed- or -gllamm- for).

I find that, within Stata, I can get what appears to be a reasonable estimate by -sampsi- for repeated measures and following this with Joanne Garrett's -sampclus- (from STB 60). However, I would like to check the reasonableness of the answer if possible either within Stata or with Mac software (if any).

Any suggestions are very welcome.

Thanks,

Rich
*
*   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/
*
*   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   |   What's new   |   Site index