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st: Testing interaction terms when using factor variables
From
Richard Williams <[email protected]>
To
[email protected]
Subject
st: Testing interaction terms when using factor variables
Date
Thu, 27 Oct 2011 16:32:41 -0500
I am looking for a shorthand notation when testing multiple
interaction terms at once.
-----------
use "http://www.indiana.edu/~jslsoc/stata/spex_data/tenure01.dta";, clear
quietly logit tenure i.female year c.year#c.year select articles
prestige i.female#(c.year c.year#c.year c.select c.articles c.prestige)
test 1.female#c.year 1.female#c.year#c.year 1.female#c.select
1.female#c.articles 1.female#c.prestige
test 1.female#(c.year c.year#c.year c.select c.articles c.prestige)
-----------
The first test command, where I spell out each interaction
separately, works fine. But, with the second test command, I get
invalid varname
r(198);
You would think there would be some sort of shorthand way of doing
this, but if so I can't figure out what it is.
-------------------------------------------
Richard Williams, Notre Dame Dept of Sociology
OFFICE: (574)631-6668, (574)631-6463
HOME: (574)289-5227
EMAIL: [email protected]
WWW: http://www.nd.edu/~rwilliam
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