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Re: st: RE: interacting two covariates
From
Richard Williams <[email protected]>
To
[email protected]
Subject
Re: st: RE: interacting two covariates
Date
Tue, 15 Jun 2010 08:49:37 -0500
At 04:02 PM 6/14/2010, Nick Cox wrote:
. help factor variables
Nick
[email protected]
Ian Breunig
Is there a particular notation to interact two variables within an
estimation command or do I always have to generate a new variable
which multiplies the two variables that I am interacting. I have
never came across this command notation if it exists so it would be
nice to know if there was a way to do this. thanks.
The latest Stata Newsletter includes a nice discussion of factor
variables. I'll just add that (1) you have to have Stata 11, and (2)
a lot of user-written commands (which, alas, include mine) do not
support factor variables, so you will have to use the old approach of
generating new variables for them.
-------------------------------------------
Richard Williams, Notre Dame Dept of Sociology
OFFICE: (574)631-6668, (574)631-6463
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