Dear S+ users group:
Does anybody know of an S+ implementation or method to evaluate the predictive ability for a survival model including time-dependent covariates, for example, the time-dependent C-index by Antolini et al (Stat in Med, 2005)? Is this method applicable to model with clustered survival data because my model is based on eye-specific data?
Many thanks in advance for any advise!
Feng
Feng Gao, Ph.D.
Division of Biostatistics, Washington University School of Medicine
Campus Box 8067, 660 S. Euclid Av.
St. Louis, MO 63110-1093
Phone: 314-362-3682
Fax: 314-362-3728
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