Hi, I am wondering if anyone can explain to me if cumulative incidence (CI) is 
just "1 minus kaplan-Meier survival"? Under what circumstance, you should use 
cumulative incidence vs KM survival? If the relationship is just CI = 
1-survival, then what difference it makes to use one vs. the other?

And in R how I can draw a cumulative incidence plot. I know I can make a 
Kaplan-Meier survival plot using plot(survfit()), for example:

fit<-survfit(Surv(time,status)~group,data=data)
plot(fit, col=1:2)

How to draw CI plot then?

Thanks very much!

John
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