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st: option noomit not allowed


From   Donald Spady <dspady@ualberta.ca>
To   Statalist Statalist <statalist@hsphsun2.harvard.edu>
Subject   st: option noomit not allowed
Date   Tue, 11 Sep 2012 11:18:53 -0600

Dear All

I just tried to run a logistic regression and got the response "option noomit not allowed"
I had done the exact same regression on the same dataset a while back and got some results; today not so.
So I tried it using
sysuse auto.dta
logistic foreign mpg,  
where foreign is a 0/1 variable that mpg is continuous.
and I got the response
"option noomit not allowed"

I tried it with xi: as in
xi: logistic foreign i.rep78 and got

. xi: logistic foreign i.rep78

i.rep78           _Irep78_1-5         (naturally coded; _Irep78_1 omitted)
note: _Irep78_2 != 0 predicts failure perfectly
      _Irep78_2 dropped and 8 obs not used

option noomit not allowed
r(198);

HELP.  What is going on.

Don

  
Donald Spady

--
dspady@ualberta.ca





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