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RE: st: A continuous DV between 0 and 1


From   "FEIVESON, ALAN H. (AL) (JSC-SK) (NASA)" <alan.h.feiveson@nasa.gov>
To   "'statalist@hsphsun2.harvard.edu'" <statalist@hsphsun2.harvard.edu>
Subject   RE: st: A continuous DV between 0 and 1
Date   Tue, 12 Oct 2004 08:56:07 -0500

You could also write your own ML routine using a beta distribution. Actually
I am surprised that Stata doesn't already have some sort of
"beta-regression" built into it. Actually, I already have a crude version of
such a program if anyone wants it.

al Feiveson

-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu]On Behalf Of Stas Kolenikov
Sent: Thursday, October 07, 2004 2:36 PM
To: statalist@hsphsun2.harvard.edu
Subject: Re: st: A continuous DV between 0 and 1


You would need to use -glm- set of routines with -family(binomial)-.
If you also want all of the residual diagnostic tools provided by the
-regress-, you can back-transform your data by taking inverse logit or
probit links ( ln(y/(1-y)) and invnorm(y), respectively), although I
am not quite sure there is a solid statistical foundation for doing
so.

On Thu, 7 Oct 2004 14:22:41 -0500, Kang, Eugene <ekang@cgsb.tamu.edu> wrote:
> I am using STATA 8 to analyze a model with a ratio DV ranging from 0 to 1.
> The distribution of this DV is somewhat S-shaped. I was wondering if
someone
> could point me to the correct statistical analysis to use (I can read the
> STATA manual and other books from there on). I know that this is a simple
> question, but any assistance would be greatly appreciated! Thanks! 

-- 
Stas Kolenikov
http://stas.kolenikov.name
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