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Re: st: Standard Error in logit
At 22:01 17/02/2005, Svend Juul wrote:
Now that we are here: Does anybody have any idea why -logistic- and other
-eform- outputs avoid displaying the baseline constant? I know that I can
produce it by -lincom _cons-, but I often need it (dependent on study
design), so it would be nice if it were - or at least could be - included.
See my Stata Tip on the -eform- option of -regress- (Newson, 2003), which
applies equally to -logistic- and can be downloaded from my website from
within Stata by typing
. net from http://www.kcl-phs.org.uk/rogernewson/papers/
The trick is to define a variable equal to 1 in all observations and then
to include it in the X-variable list, using the -noconst- and -eform-
options. A variant of this trick is to define multiple baseline odds for
multiple groups, using the multiple variables generated by the -generate()-
option of -tabulate- instead of a single variable equal to 1 in all
I hope this helps.
Newson R. 2003. Stata tip 1: The eform() option of regress. The Stata
Journal 3(4): 445.
Lecturer in Medical Statistics
Department of Public Health Sciences
King's College London
5th Floor, Capital House
42 Weston Street
London SE1 3QD
Tel: 020 7848 6648 International +44 20 7848 6648
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Opinions expressed are those of the author, not the institution.
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