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Re: st: Pseudo R2 in poisson regression


From   Raymond <statasas@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Pseudo R2 in poisson regression
Date   Fri, 5 Aug 2005 10:33:56 -0400

Thanks for the advice!



On 8/4/05, Richard Williams <Richard.A.Williams.5@nd.edu> wrote:
> At 03:05 PM 8/4/2005 -0400, Raymond wrote:
> >the command I'm using is:
> >xi:poisson death i.age i.cohort i.period, exposure(population) constraints (1)
> 
> I believe the constraint is what is zapping you.  You should notice that
> you are also getting a Wald chi-square instead of an LR
> chi-square.  (Perhaps exposure zaps you too, but constraint definitely does.)
> 
> You could probably calculate by hand.  Alternatively, what is the
> constraint?  You might be able to specify the constraint some other way,
> e.g. add 2 vars together so their estimated effects are equal.
> 
> 
> -------------------------------------------
> Richard Williams, Notre Dame Dept of Sociology
> OFFICE: (574)631-6668, (574)631-6463
> FAX:    (574)288-4373
> HOME:   (574)289-5227
> EMAIL:  Richard.A.Williams.5@ND.Edu
> WWW (personal):    http://www.nd.edu/~rwilliam
> WWW (department):    http://www.nd.edu/~soc
> 
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