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From | Nyasha Tirivayi <ntirivayi@gmail.com> |
To | statalist@hsphsun2.harvard.edu |
Subject | Re: st: Missing standard error of constant term |
Date | Thu, 16 Jun 2011 19:44:18 +0200 |
Hi Maarten 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. Kindly advise N. Tirivayi Post doctoral fellow Maastricht University Netherlands On Thu, Jun 16, 2011 at 7:37 PM, Maarten Buis <maartenlbuis@gmail.com> wrote: > On Thu, Jun 16, 2011 at 6:51 PM, Nyasha Tirivayi wrote: >> I am running a logit regression. However whenever I include >> community/regional dummies the standard error for the constant term is >> missing? >> >> How can I resolve this? > > Sounds like a coding error in your regional dummies or you just do not > have enough observations per community to include those dummies. > Generally it is a sign that your model is too complicated for your > data, so you will need to simplify it. > > -- 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/ > * * 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/