|From||"jyotsna puri" <email@example.com>|
|Subject||st: Re: xtprobit and missing s.e.|
|Date||Wed, 13 Apr 2005 18:12:11 +0000|
Hi all, [I have looked up previous postings on this, but found that although they helped me in some things, they don't help to answer my ultimate question.] Quick summary: I run an -xtprobit- and get missing s.e. for Lnsig2u, sigma_u and rho. I run -vce- and get a full matrix of variance/covariances. For lnsig2u, I get 0s in all columns. I am keen to understand what this means.