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Re: st: Generating dummies with xi

From   Jeph Herrin <>
Subject   Re: st: Generating dummies with xi
Date   Mon, 11 Apr 2011 22:41:37 -0400

Right, -gllamm- does not accept factor variables. And I agree,
-xi- creates terrible names by default, though you can change that.

On 4/11/2011 10:59 PM, Richard Williams wrote:
At 08:37 PM 4/11/2011, Garry Anderson wrote:
I think another exception to use -xi:- with Stata 11, rather than use
factor variables, is when the following estimation commands are being
-exlogistic-, -expoisson-, -qreg-, -iqreg-, -sqreg- and -bsqreg-.

There may be other commands that do not allow factor variables.

There are also probably many user-written commands that have not been updated to work with
factor variables. I know my -gologit2- program does not. (Incidentally, I never have liked
xi, mostly because of the hideous variable names it creates; I'd rather generate the
dummies and interaction terms myself.)

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

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