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Predict follow up time using parametric model in r

3 messages · Israel Ortiz, David Winsemius

Israel Ortiz
# 
I am trying to predict follow-up time using several survival models, both
parametric and semi-parametric. I achieve it for semi parametric models
using predict.coxph function in R from survival package using type =
"expected" as indicated in help. However, for parametric models, this
option doesn't exist for the predict.survreg function. Is there any other
option? Maybe using rms package?
David Winsemius
#
On 11/3/18 12:59 PM, Israel Ortiz wrote:
I would imagine that the author thought that you should be able to 
rather simple construct a function that would return an estimate simply 
from the coefficients and the parametric equation for S(t).


That was also what Harrell does in his "Regression? Modeling Strategies" 
text. In the first edition the code is on page 437.
David Winsemius
#
On 11/3/18 12:59 PM, Israel Ortiz wrote:
I would imagine that the author thought that you should be able to 
rather simple construct a function that would return an estimate simply 
from the coefficients and the parametric equation for S(t).


That was also what Harrell does in his "Regression? Modeling Strategies" 
text. In the first edition the code is on page 437.