|Date: ||Sun, 23 Jan 2011 18:51:34 -0500|
|Reply-To: ||"Viel, Kevin" <kviel@SJHA.ORG>|
|Sender: ||"SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>|
|From: ||"Viel, Kevin" <kviel@SJHA.ORG>|
|Subject: ||Re: GLMSELECT procedure: Combination of SELECTION and STOP options|
|Content-Type: ||text/plain; charset="us-ascii"|
> -----Original Message-----
> From: SAS(r) Discussion [mailto:SAS-L@LISTSERV.UGA.EDU] On Behalf Of Peter
> Sent: Friday, January 21, 2011 6:41 PM
> To: SAS-L@LISTSERV.UGA.EDU
> Subject: Re: GLMSELECT procedure: Combination of SELECTION and STOP
> I usually find that the different criteria give similar
> results. When they do not, then there is no clear choice as to which
> model is "best", but that is usually the case anyway.
Perhaps it might be better to say, which model is the "least" bad?
I think the "clear" choice only comes through replication and refinement. In the cases the business decisions must be made, one can employ rigid protocols adhering to the "best" knowledge and still arrive at a spurious model.
Sometimes, even replication will not protect against that...
Kevin Viel, PhD
Senior Research Statistician
Patient Safety & Quality
International College of Robotic Surgery
Saint Joseph's Translational Research Institute
Saint Joseph's Hospital
5671 Peachtree Dunwoody Road, NE, Suite 330
Atlanta, GA 30342
(678) 843-6076: Direct Phone
(678) 843-6153: Facsimile
(404) 558-1364: Mobile
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