Hi,

I'm trying to superimpose Kaplan-Meier curves for two separate outcomes, and I'd like the flip the curves so that they show "failure" instead of survival, as such:

Array

I've tried using addplot and I've tried using the code below, but I'm only able to get superimposed standard survival curves- I'm not able to flip both of them. I've seen another similar example on Statalist that used Nelson-Aalen curves, but I'd like to use Kaplan Meier. Since I have two separate outcomes rather than two separate exposures, I don't think graphing using "by()" would be helpful.
Anyone know how to do this?

Thanks!
-Jenine


Code:
stset followuptime, failure(outcome1==1) id(id)
sts graph, failure risktable(0(2)12) 
sts gen s1 = s

stset followuptime, failure(outcome2==1) id(id)
sts gen s2 = s
twoway line s1 s2 _t, sort connect(step step)
Array