Goodness of fit in Poisson Regression

[E. Bernardo]

Dear All,

 

I look at the Annotated SPSS Output of Poisson Regression at http://www.ats.ucla.edu/stat/Spss/output/poisson.htm.  In that reference, the Goodness of fit indeces are showed but the rule of thumbs for an adequate model.  That is, what would be the range of the deviance (for example) to be considered the model fits adequately with the data.  Any comments?

 

Eins

[Bruce Weaver]

Eins Bernardo wrote

Dear All,
 
I look at the Annotated SPSS Output of Poisson Regression at http://www.ats.ucla.edu/stat/Spss/output/poisson.htm.  In that reference, the Goodness of fit indeces are showed but the rule of thumbs for an adequate model.  That is, what would be the range of the deviance (for example) to be considered the model fits adequately with the data.  Any comments?
 
Eins

Eins, take a look at the annotated output from SAS--it has a little more information of the sort you are looking for.  Look for the heading "Criteria For Assessing Goodness Of Fit".

   http://www.ats.ucla.edu/stat/sas/output/sas_poisson_output.htm

HTH.