On Mon, 18 Feb 2008, gallon li wrote:
> i am trying to fit a survival regression model (cox model or parametric
> model) in R by including the covariate effects as a function m(x) instead of
> just beta*x. is it possible to fit such a model? can someone recommend some
> reference? I searched but only found a package called addreg where
> the hazard is actually modeled additively. That is not what i want.
The survival package has pspline() for this purpose (assuming that by
'non-parametric' you mean a flexible smooth curve)
-thomas
Thomas Lumley Assoc. Professor, Biostatistics
[EMAIL PROTECTED] University of Washington, Seattle
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