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Re: st: How to obtain logistic regression estimates without creating a new dataset?


From   Maarten buis <maartenbuis@yahoo.co.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: How to obtain logistic regression estimates without creating a new dataset?
Date   Fri, 2 Nov 2007 10:59:27 +0000 (GMT)

--- tiago.pereira@incor.usp.br wrote:
> Is there a more straightforward solution to obtain, from a
> logistic regression model, ORs, CIs and p values as scalars?

I have written a short text on how to do this:
http://home.fsw.vu.nl/m.buis/wp/pvalue.html

Also see the example below:

*----------- begin example --------------
sysuse auto, clear
logit foreign mpg, or

tempname or p ub lb
scalar `or' = exp(_b[mpg])
scalar `p' = 2*normal(-abs(_b[mpg]/_se[mpg]))
scalar `ub' = exp(_b[mpg] + invnormal(.975)*_se[mpg])
scalar `lb' = exp(_b[mpg] - invnormal(.975)*_se[mpg])
di `or'
di `p'
di `ub'
di `lb'
*------------- end example -----------
(For more on how to use examples I sent to the Statalist, see
http://home.fsw.vu.nl/m.buis/stata/exampleFAQ.html )

Hope this helps,
Maarten

-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands

visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434

+31 20 5986715

http://home.fsw.vu.nl/m.buis/
-----------------------------------------


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