Date: Mon, 14 Sep 2009 11:41:58 -0700
Reply-To: "cat.." <cat.b41@GMAIL.COM>
Sender: "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From: "cat.." <cat.b41@GMAIL.COM>
Subject: Re: URGENT - Kaplan-Meier curves,
95% CI and statistically significant difference
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On Sep 13, 10:21 am, "cat.." <cat....@gmail.com> wrote:
> Hi there,
> I have limited experience in time-to-event data analysis. I requested,
> in a statistical analysis plan for an observational study, to plot theKaplan-Meiercurves for 2 groups of patients on a single plot,
> together with the 95% CIs at specific timepoints.
> When 95% CIs do not overlapp at a given timepoint, is it correct to
> draw the conclusion that disc rates are significantly different at
> this timepoint ?
> Reversely, when they overlapp, is it correct to infer that the disc
> rates at that timepoint are NOT significantly different ?
> Thanks for your feedback. This is quite urgent as I need to give my
> feedback early this coming week.
Has anyone an idea ?