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Re: st: mlogit problems
At 09:16 PM 7/29/2006, JOSHUA HAWLEY wrote:
It probably would help to see some commands and output. Also,
remember that, just because a frequency shows cases in every
category, that doesn't mean you'll have cases in every category when
you do the mlogit, e.g. you could lose cases because of missing data
on one or more of your independent variables.
I'm running a series of svy mlogit commands on different countries.
I'm having some trouble producing the estimates with the expected
groupings. In other words as part of the model I have five
categories (call them A, B, C, D, E). When I run a tabulation on the
dep var I get frequencies as I would expect, 2000 for one, 60 for
another, you get the idea, and the important detail is there are
valid cases in all five categories. However, when I run the mlogit
commands I get a nonsense response back with regression output that
seems to show the dep variable as one outcomes. In other words there
is just one set of coefficents rather then the four I would expect.
I only get this response on selected datasets, and the same command
language works fine on a number of nations.
In any event, I am betting it has something to do with your data
rather than your commands, but without looking at the data, commands
and output it is hard to say.
Richard Williams, Notre Dame Dept of Sociology
OFFICE: (574)631-6668, (574)631-6463
WWW (personal): http://www.nd.edu/~rwilliam
WWW (department): http://www.nd.edu/~soc
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