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st: AIC and BIC to compare parametric and non-parametric survival models


From   Tom Trikalinos <ttrikalin@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: AIC and BIC to compare parametric and non-parametric survival models
Date   Fri, 15 May 2009 15:28:32 -0400

To compare non-parametric and parametric survival analysis models, can
I use the AIC and BIC?
Specifically, I fit Cox PH models and exponential and weibull
parametric regressions. It was pointed out to me that AIC & BIC-based
comparisons may not be valid (because Cox uses partial likelihood).

Any insights appreciated.

PS. I am performing survival analyses to inform a decision analysis.
For this reason I strongly prefer to fit parametric models - will make
life easier and restore the smile on me face.



best

tom




Thomas A. Trikalinos, MD

Co-Director, Tufts Medical Center Evidence-based Practice Center
Associate Director, Center for Clinical Evidence Synthesis

Mailing address:
Institute for Clinical Research and Health Policy Studies
Tufts Medical Center
800 Washington St
#63
Boston, MA 02111

Physical address:
Office 710
35 Kneeland St
Boston
Phone: (+1) 617-636-0734
Fax: (+1) 617-636-8628
TTrikalinos@tuftsmedicalcenter.org
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