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From | Richard Williams <richardwilliams.ndu@gmail.com> |
To | statalist@hsphsun2.harvard.edu |
Subject | Re: st: Brant test after oprobit: Help with syntax? |
Date | Mon, 13 Sep 2010 18:20:02 -0500 |
At 08:22 AM 9/13/2010, Andreas Tiemann wrote:
Dear Stata Listers, I'm trying to conduct a Brant test after running an ordered probit regression. The test is "canned" into the file brant.ado for postestimation after ologit. While Greene & Hensher describe how to adjust the test to the oprobit setting, there is no syntax/ado available.
There are at least two ways of doing tests very similar to brant using probit models. Download and install -omodel- and/or -gologit2- from SSC. Here is an example using both commands:
use "http://www.indiana.edu/~jslsoc/stata/spex_data/ordwarm2.dta";, clear omodel probit warm yr89 male white age ed prst gologit2 warm yr89 male white age ed prst, pl sto(oprobit) link(p) gologit2 warm yr89 male white age ed prst, npl sto(goprobit) link(p) lrtest oprobit goprobit, statsgologit2 also offers a means to relax constraints on those variables that violate the parallel lines assumption. For more, see the support page at
http://www.nd.edu/~rwilliam/gologit2/index.html ------------------------------------------- Richard Williams, Notre Dame Dept of Sociology OFFICE: (574)631-6668, (574)631-6463 HOME: (574)289-5227 EMAIL: Richard.A.Williams.5@ND.Edu WWW: http://www.nd.edu/~rwilliam * * 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/