variance estimator for the cumulative incidence function

On Thu, 26 Feb 2004, Pintilie, Melania wrote:

Hi everyone,
I am using the package cmprsk in R to estimate the cumulative incidence
function and its variance. In the manual it is mentioned that the variance
is calculated based on Dr. Aalen's paper (1978, Nonparametric estimation of
partial transition probabilities in multiple decrement models).

I would appreciate if someone could provide me with a source where the
variance is expressed in a more readable way, for example as a sum.

It may well be that the simplest thing is to read the source code.
Survival analysis has pretty much moved to counting process notation.
One option is to check the old classic, Kalbfleisch & Prentice (1980),
"The Statistical Analysis of Failure Time Data", Wiley. If I remember
correctly, you'll find Greenwood's formula there for the log survivor 
function, which is what you want.
	-thomas

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variance estimator for the cumulative incidence function

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