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RE: st: testing IIA assumption in standard MNL


From   "Jun Xu" <mystata@hotmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   RE: st: testing IIA assumption in standard MNL
Date   Sat, 20 Aug 2005 19:24:07 -0500

See http://www.indiana.edu/~jslsoc/spost_faqs/spostfaq016.htm

Jun Xu
Ph.D. Candidate
Department of Sociology
Indiana University at Bloomington
http://mypage.iu.edu/~junxu




From: SC Wainwright <s9907040@sms.ed.ac.uk>
Reply-To: statalist@hsphsun2.harvard.edu
To: "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject: st: testing IIA assumption in standard MNL
Date: Fri, 19 Aug 2005 16:46:30 +0100

hello statalist,

i have attempted to use the mlogtest with iia option and hausman option, as well
as the manual hausman code (running 2 regressions) to get the above test
working. mlogtest says "you used the old syntax" of hausman and refers me to
hausman,

hausman all partial, alleqs

which provides the following output(also when i use drop-down post-est menu);

no coefficients in common; specify equations(matchlist)
for problems with different equation names.
r(498);

i've subsequently tried matching each category and had no luck

'Child' found where integer expected but when using integers, these are not
recognised and giving output "equation Child not found r(111);"

hausman all partial, equations(1:2)
equation at not found
r(111);

i have a numeric floating 3-category dep var with "Child in school" "Child at
home" and "Child works"

shall i rename dependent variable ?

thanks
claire






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