1-Would informing the algorithm coxph which samples represents the same
person (through the use of an Id for example) improve the ?efficiency?
of the estimated model? And if so, how should i do that? Using strata()?
No, it makes no change. The reason is that the (start, stop] is just a
trick. A
Hi all,
I am looking at the tutorial/appendix from John Fox on “Cox
Proportional-Hazards Regression for Survival Data” available here:
http://cran.r-project.org/doc/contrib/Fox-Companion/appendix-cox-regression.pdf
I am particularly interested in modelling survival with time-dependent
covariates
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