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re: st: 95% CI at one or two points in a Kaplan-Meier curve?


From   "Airey, David C" <david.airey@vanderbilt.edu>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   re: st: 95% CI at one or two points in a Kaplan-Meier curve?
Date   Sun, 7 Aug 2011 13:30:10 -0500

.

Maybe something like this:

clear
graph drop _all
webuse drug2b
sts graph, by(drug) ci name(rarea) legend(off)
sts list, by(drug) at(0(5)40)
sts graph, by(drug) legend(off) name(rcap_at) ///
	addplot((pci 0.1612 10 0.5828 10, lc(black)) ///
		(pci 0.6415 10 0.9398 10, lc(black)) ///
		(pci 0.2275 30 0.6641 30, lc(black)))

-Dave

David Airey said:
> 
> Use the recast option to ciopts:
> 
> webuse drug2b
> sts graph, by(drug) ci ciopts(recast(rcap))
> 
> -Dave

Thank you. That is what 99% of what I wanted, but can I limit the plotting of 95% CIs to arbitrary data points along the x axis? Say, for instance in your drug example using --webuse drug2b--, could I somehow only plot 95% CIs at times 10 and 30?

Many thanks again,

Phil
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