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: standardized confidence intervals using mlogit


From   Cameron McIntosh <cnm100@hotmail.com>
To   STATA LIST <statalist@hsphsun2.harvard.edu>
Subject   RE: st: standardized confidence intervals using mlogit
Date   Mon, 19 Sep 2011 17:02:09 -0400

Lisa,
I'm not sure, but I think you might have to do bootstrapping to get standard errors and CIs for the standardized coefficients. You may also want to check out:
Menard, S. (2011). Standards for Standardized Logistic Regression Coefficients. Social Forces, 89(4), 1409-1428.
Menard, S. (2004). Six Approaches to Calculating Standardized Logistic Regression Coefficients. The American Statistician, 58, 218-223. 
Cam
> From: lrlevy@emory.edu
> To: statalist@hsphsun2.harvard.edu
> Subject: st: standardized confidence intervals using mlogit
> Date: Mon, 19 Sep 2011 19:38:43 +0000
> 
> Dear Listers,
> I have been trying  polychotomous logistic regression, modeling an outcome with 5 levels, group, and I am coming across two problems.
> 
> First, I am unable to obtain the SE and confidence interval of standardized coefficients. The list coef, std  command does not seem to work with mlogit as it would with linear regression. Furthermore when I use the std command alone I can’t see the confidence intervals the standardized estimates. Can someone please point me to the right command or tell me how to produce the confidence intervals?
> 
> Second, I am unable to obtain standardized coefficient for my categorical predictor (smoke, yes/no).   The other predictors in my model are continuous. When I look at the output with  “standardized coefficients” there is no standardized coefficient for the categorical variable. I wonder what happened to the variable during the standardization?  Is a  categorical variable accounted for or is it systematically dropped in this type of standardization?  It makes me wonder whether standardization is actually appropriate in this case.
> 
> I am using STATA11 and along with some of the options I've tried above, my code is
> 
> mlogit group glucose age bmi smoke, base(0);
> 
> Thank you in advance - any help is appreciated.
> Lisa Staimez
> 
> ________________________________
> 
> This e-mail message (including any attachments) is for the sole use of
> the intended recipient(s) and may contain confidential and privileged
> information. If the reader of this message is not the intended
> recipient, you are hereby notified that any dissemination, distribution
> or copying of this message (including any attachments) is strictly
> prohibited.
> 
> If you have received this message in error, please contact
> the sender by reply e-mail message and destroy all copies of the
> original message (including attachments).
> 
> *
> *   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   |   Site index