Dear Colleague:
I am using
S+2000 (windows) and would like to
know how to use COX
model coefficients and
statistics, without the original data set to estimate
the baseline survival
for a set of predictors including time-dependent covariates.
The problem is that I don't have my raw
dataset in S+
format, although I do
have the model coefficients as well as related model fit statistics generated from SAS. I was advised by
S-plus support group that a COXPH OBJECT could do this job but needs some sophisticated programming using
COEFFICIENTS, VAR, NAIVE.VAR, LOGLIK, SCORE, RSCORE, WALD.TEST, ITER, etc. Converting the original dataset from SAS to S+
is not possible.
I would highly appreciate it if someone can give
me some help on how to use this very useful
tool only knowing the model statistics and not having the original
dataset.
Thank you very much in advance!
Jiahong