Hi everyone.
There's been several threads on baseline hazard in Cox model but I think
they were all on cumulative baseline hazard,
for instance
http://tolstoy.newcastle.edu.au/R/help/01a/0464.html
http://tolstoy.newcastle.edu.au/R/help/01a/0436.html
basehaz in package survival seems to do a
If you have a smooth cumulative hazard you can differentiate it to get a
differentiable hazard (using smooth in its technical sense).
Try
http://www.stats.ox.ac.uk/pub/MASS4/VR4stat.pdf
for possible approaches in S/R. There are several, e.g. in packages
muhaz, polspline, sm, locfit,
Prof Brian Ripley [EMAIL PROTECTED] writes:
I'm doing the same job as Hegre et al. (studying civil wars) but with the
counting process formulation of the Cox model. (I use intervals, my formula
looks like Surv(start,stop,status)~ etc.).
Careful, that is left- and right- censored, not
Thank you all for your quick answers.
With respect to my question on smooth noncumulative baseline cox hazard, I
followed Prof Brian Ripley and I used the following:
library(survival)
plot(basehaz(coxfinal2)[,2]/365.25+1945,basehaz(coxfinal2)[,1],t=l)
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