Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: st: SE erroes for xtmixed-predict fitted
From
Ricardo Ovaldia <[email protected]>
To
[email protected]
Subject
Re: st: SE erroes for xtmixed-predict fitted
Date
Tue, 28 Feb 2012 16:46:16 -0800 (PST)
Thank you Steve.
I did see Steve's post, however when I tried doing this, I got the same SE for every patient when I leave out the random slope term i.e.:
xtmixed cholest i.drug month || patid
So I was not sure that it was working correctly. When I included the random slope term, I get slightly different values for each patient but still very similar to each other. Is that what I should expect?
Ricardo
Ricardo Ovaldia, MS
Statistician
Oklahoma City, OK
--- On Tue, 2/28/12, Steve Samuels <[email protected]> wrote:
> From: Steve Samuels <[email protected]>
> Subject: Re: st: SE erroes for xtmixed-predict fitted
> To: [email protected]
> Cc: [email protected]
> Date: Tuesday, February 28, 2012, 4:37 PM
> You must have missed http://www.stata.com/statalist/archive/2011-12/msg00852.html
>
> where I tried to answer a related questionn. I'm not sure
> I'm right. If I'm not, I bet that Bobby Gutierrez knows.
>
> Steve
> [email protected]
>
> On Feb 28, 2012, at 3:50 PM, Ricardo Ovaldia wrote:
>
> I searched the Statalist archives for the answer to the
> following query and could not find one. Can someone please
> help.
>
>
> After using -xtmixed- to fit:
>
> xtmixed cholest i.drug month || patid:month
>
> I used -predict, fitted- to get predicted estimates that
> account for both the fixed and random effects.
> I them average these over drug and month to get mean
> predicted cholesterol values for each drug at each time
> point.
> Is there a way to place a CI or to calculate SE for these
> estimates?
>
> Thank you,
> Ricardo.
>
>
>
> Ricardo Ovaldia, MS
> Statistician
> Oklahoma City, OK
> *
> * 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/
>
*
* 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/