topic Re: Proc Gam with gamma distribution in SAS Programming https://communities.sas.com/t5/SAS-Programming/Proc-Gam-with-gamma-distribution/m-p/124027#M294032 <HTML><HEAD></HEAD><BODY><P>I don't know... Can someone confirm that <SPAN style="font-family: 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: #ffffff;">the deviance of the final estimate is the scale parameter? Thanks everyone!</SPAN></P><P></P></BODY></HTML> Tue, 13 Nov 2012 09:56:01 GMT arnaudd 2012-11-13T09:56:01Z Proc Gam with gamma distribution https://communities.sas.com/t5/SAS-Programming/Proc-Gam-with-gamma-distribution/m-p/124025#M294030 <HTML><HEAD></HEAD><BODY><P>Hi everyone,</P><P></P><P>I'm using proc gam with an underlying gamma distribution. I would like to know where to find the parameters of these resulting gamma distributions.</P><P>I guess that the predicted values are the means (?) but how to find the second parameter of the gamma distribution(link with deviance of the final estimate)?</P><P>Is there a particular option to put in a statement to get them?</P><P></P><P>Thanks a lot for your answers!</P><P></P><P>Arnaud</P></BODY></HTML> Mon, 12 Nov 2012 15:20:39 GMT https://communities.sas.com/t5/SAS-Programming/Proc-Gam-with-gamma-distribution/m-p/124025#M294030 arnaudd 2012-11-12T15:20:39Z Re: Proc Gam with gamma distribution https://communities.sas.com/t5/SAS-Programming/Proc-Gam-with-gamma-distribution/m-p/124026#M294031 <HTML><HEAD></HEAD><BODY><P>Isn't the deviance of the final estimate the scale parameter here?</P><P></P><P>Steve Denham</P></BODY></HTML> Mon, 12 Nov 2012 20:53:24 GMT https://communities.sas.com/t5/SAS-Programming/Proc-Gam-with-gamma-distribution/m-p/124026#M294031 SteveDenham 2012-11-12T20:53:24Z Re: Proc Gam with gamma distribution https://communities.sas.com/t5/SAS-Programming/Proc-Gam-with-gamma-distribution/m-p/124027#M294032 <HTML><HEAD></HEAD><BODY><P>I don't know... Can someone confirm that <SPAN style="font-family: 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: #ffffff;">the deviance of the final estimate is the scale parameter? Thanks everyone!</SPAN></P><P></P></BODY></HTML> Tue, 13 Nov 2012 09:56:01 GMT https://communities.sas.com/t5/SAS-Programming/Proc-Gam-with-gamma-distribution/m-p/124027#M294032 arnaudd 2012-11-13T09:56:01Z Re: Proc Gam with gamma distribution https://communities.sas.com/t5/SAS-Programming/Proc-Gam-with-gamma-distribution/m-p/124028#M294033 <HTML><HEAD></HEAD><BODY><P>In the Details section of the PROC GAM documentation, there is a section called Dispersion Parameter.&nbsp; It mentions the scaled deviance as the estimator of the dispersion (scale) parameter.&nbsp; What I do not know is whether the output "Deviance of the Final Estimate" is scaled or not, and for the life of me, I can't find it in the documentation or the examples.</P><P></P><P>Steve Denham</P></BODY></HTML> Tue, 13 Nov 2012 13:27:29 GMT https://communities.sas.com/t5/SAS-Programming/Proc-Gam-with-gamma-distribution/m-p/124028#M294033 SteveDenham 2012-11-13T13:27:29Z