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st: -gologit2- update
Thanks to Kit Baum, a new version of -gologit2- is available from
SSC. The main changes are
* Although -gologit2- continues to work under Stata 8.2, if you are
using Stata 9 it can now do survey data analysis with files that have
been svyset in Stata 9.
* I fixed a bug that could sometimes keep -gologit2- from working
correctly with -margeff- and possibly other post-estimation
commands. If you want to use -gologit2- with -margeff-, give a command like
margeff, model(gologit)
* The ancillary file gologit2.pdf, which provides extensive
documentation on the program, has been updated. (I don't think
-adoupdate- catches changes in the ancillary files, by the way.) The
same documentation (as well as a troubleshooting FAQ) can be found at
http://www.nd.edu/~rwilliam/gologit2/index.html
Here is a description of the program:
gologit2 estimates generalized ordered logit models for ordinal
dependent variables. A major strength of gologit2 is that it can also
estimate two special cases of the generalized model: the proportional
odds model and the partial proportional odds model. Hence, gologit2
can estimate models that are less restrictive than the proportional
odds/parallel lines models estimated by ologit (whose assumptions are
often violated) but more parsimonious and interpretable than those
estimated by a non-ordinal method, such as multinomial logistic
regression (i.e. mlogit). Other key strengths of gologit2 include
options for linear constraints, alternative model parameterizations,
automated model fitting, survey data (svy) estimation, and the
computation of estimated probabilities via the predict command.
gologit2 is inspired by Vincent Fu's gologit program and is backward
compatible with it but offers several additional powerful options.
-------------------------------------------
Richard Williams, Notre Dame Dept of Sociology
OFFICE: (574)631-6668, (574)631-6463
FAX: (574)288-4373
HOME: (574)289-5227
EMAIL: [email protected]
WWW (personal): http://www.nd.edu/~rwilliam
WWW (department): http://www.nd.edu/~soc
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* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
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* http://www.ats.ucla.edu/stat/stata/