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: Missing standard error of constant term


From   Maarten Buis <maartenlbuis@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Missing standard error of constant term
Date   Thu, 16 Jun 2011 21:22:55 +0200

On Thu, Jun 16, 2011 at 7:44 PM, Nyasha Tirivayi wrote:
> Thanks for your reply. I am doing the logit regression for propensity
> score matching. And I really needed the community dummies in the model
> to control for any unobserved community effects. So your suggestion
> would be for me to  drop them completely? I checked and there are
> sufficient observations per community.

Hard to say, that depends on what exactly the problem is. The devil is
in the detail in such situations. So I would just look at lots and
lots of cross tabulations and graphs to see if I can identify the
problem. As I said, I suspect a coding error or a reference category
that is not left out, or one or more too small comunities, but it
could be many other things.

-- Maarten

--------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany


http://www.maartenbuis.nl
--------------------------

*
*   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