[R] [newbie] Cox Baseline Hazard
meles at free.fr
Fri Feb 23 00:35:03 CET 2001
I must have a vocabulary problem.
I've tryed the method you gave me and I get a Cumulative Hazard for my
But, what I'm looking for is the Baseline Hazard (I don't know if the
term is appropriate).
If I consider a cox model for the intantaneous risk of death:
h(t,Z)=h0(t)exp(b'Z), what I'm looking for is H0(t).
What I get with the surfit() methot is H(t).
I might be completly wrong, but when I compute my data in SPSS, I get a
Cumulative Baseline Hazard of 0.062, in R, with the surfit way, I get
0.33, which correspond in the SPSS result to the Cumulative Hazard.
I hope that what i'm writing is not too fuzzy.
I hope my questions are not too boring :-)
Blaise aka Meles
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