Did you not notice the conf.type = "none" argument to your survfit call and the associated documentation in the survfit help?
-- Bert Bert Gunter "The trouble with having an open mind is that people keep coming along and sticking things into it." -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) On Sat, Aug 26, 2017 at 5:18 PM, Adrian Johnson <oriolebaltim...@gmail.com> wrote: > Dear Bert, > thank you for suggestion. I am aware of R-help function. I must > apologize, my earlier question could lead to assumptions otherwise. > > As you can see below, I only get Std. error but not lower and Upper CIs. > > I was wondering if there is another argument or method, could give CIs > which I cannot find anywhere. > > Thanks > Adrian > > >> Nsurv <- >> survfit(Surv(NOSM,NStat)~as.factor(expcat1),conf.type='none',type='kaplan-meier') > > >> summary(Nsurv,time=c(12,24)) > Call: survfit(formula = Surv(NOSM, NStat) ~ as.factor(expcat1), > conf.type = "none", type = "kaplan-meier") > > 1 observation deleted due to missingness > as.factor(expcat1)=DN > time n.risk n.event survival std.err > 12 36 15 0.711 0.0629 > 24 21 8 0.535 0.0722 > > as.factor(expcat1)=UP > time n.risk n.event survival std.err > 12 20 9 0.704 0.0833 > 24 9 9 0.359 0.0931 > >> sessionInfo() > R version 3.2.3 (2015-12-10) > Platform: i386-w64-mingw32/i386 (32-bit) > Running under: Windows 8.1 x64 (build 9600) > > locale: > [1] LC_COLLATE=English_United States.1252 LC_CTYPE=English_United > States.1252 LC_MONETARY=English_United States.1252 LC_NUMERIC=C > [5] LC_TIME=English_United States.1252 > > attached base packages: > [1] stats graphics grDevices utils datasets methods base > > other attached packages: > [1] survival_2.39-5 > > loaded via a namespace (and not attached): > [1] Matrix_1.2-6 splines_3.2.3 grid_3.2.3 lattice_0.20-33 > > On Sat, Aug 26, 2017 at 7:24 PM, Bert Gunter <bgunter.4...@gmail.com> wrote: >> ??? >> >> Both ?survit.object (linked in the see also section of ?survfit) and >> ?summary.survfit give you this information. Do you not know how to use >> R's help faciities -- in which case you should learn them now; see >> ?help -- or have I misunderstood your query? >> >> Cheers, >> Bert >> >> >> Bert Gunter >> >> "The trouble with having an open mind is that people keep coming along >> and sticking things into it." >> -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) >> >> >> On Sat, Aug 26, 2017 at 4:03 PM, Adrian Johnson >> <oriolebaltim...@gmail.com> wrote: >>> Hi >>> I am not sure hiw to get thr CI from summary function on the survfit object. >>> I can get the percent survival for 2 years from survfit object but I dont >>> get Confidence intervals >>> Could anyone suggest a hint >>> Thanks >>> Adrian >>> >>> [[alternative HTML version deleted]] >>> >>> ______________________________________________ >>> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see >>> https://stat.ethz.ch/mailman/listinfo/r-help >>> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html >>> and provide commented, minimal, self-contained, reproducible code. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
