need some help about using R for Kaplan-Meier estimator

Hi Fello:

I am asked to compute the Kaplan-Meier estimator of data with right

censoring without using surfit().

I.e., a homework problem...

For such problem people will at best offer hints.

The KM estimator is the

---> cumulative product

of

---> decrements

that depend on

---> the number at risk at the event times.


This gives you a list of three things that you need to figure out how to 
calculate.

 > Does anyone know how to use R to
compute the estimators?

The data should input X: vector of right-censored observed time for n

individuals, and d: vector of failure time indicators (0=censored
individual;1=unconsored individual)

and the function should return with t: vector of sorted observed
event times, in increasing order; and km:

vector of Kaplan-Meier estimates, corresponding to t.

Thanks

 
Best Regards,

_________________________________________________________________


owitworks_012009
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