One way is
. gen x_male=x*male
. gen cigs_male=cigs*male
. logit y x_male x cigs_male cigs
. test cigs_male
-----Original Message-----
From: Ricardo Ovaldia [mailto:[email protected]]
Sent: Monday, August 30, 2004 3:25 PM
To: [email protected]
Subject: st: comparing coefficients
This question may have been asked and answered before,
but I could not find it in the archives.
If I fit two logistic models, less say one for males
and one for females, than include the same 5
covariates and one exposure variable, less say number
of cigarettes smoked per day. How can I test if the
odd ratios (coefficients) for the exposure variable
(number smoked)are the same in the two models?
Thank you in advance,
Ricardo.
=====
Ricardo Ovaldia, MS
Statistician
Oklahoma City, OK
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