https://communities.sas.com/t5/Statistical-Procedures/How-to-estimate-survival-difference-and-95-CI-of-the-difference/m-p/830300#M41122 <P>I assume you mean that your response variable is binary (survive or not). If so, then this can be done by fitting an appropriate logistic model and using either one of the approaches shown in <A href="http://support.sas.com/kb/37228" target="_self">this note</A>.</P> Thu, 25 Aug 2022 13:52:26 GMT StatDave 2022-08-25T13:52:26Z https://communities.sas.com/t5/Statistical-Procedures/How-to-estimate-survival-difference-and-95-CI-of-the-difference/m-p/830216#M41119 <P>How to estimate survival difference and 95% CI of the difference at a particular time? For example, estimate overall survival difference and 95% CI of difference at 5 years between group A and group B.&nbsp;</P> Thu, 25 Aug 2022 03:51:26 GMT https://communities.sas.com/t5/Statistical-Procedures/How-to-estimate-survival-difference-and-95-CI-of-the-difference/m-p/830216#M41119 lih 2022-08-25T03:51:26Z https://communities.sas.com/t5/Statistical-Procedures/How-to-estimate-survival-difference-and-95-CI-of-the-difference/m-p/830300#M41122 <P>I assume you mean that your response variable is binary (survive or not). If so, then this can be done by fitting an appropriate logistic model and using either one of the approaches shown in <A href="http://support.sas.com/kb/37228" target="_self">this note</A>.</P> Thu, 25 Aug 2022 13:52:26 GMT https://communities.sas.com/t5/Statistical-Procedures/How-to-estimate-survival-difference-and-95-CI-of-the-difference/m-p/830300#M41122 StatDave 2022-08-25T13:52:26Z https://communities.sas.com/t5/Statistical-Procedures/How-to-estimate-survival-difference-and-95-CI-of-the-difference/m-p/830344#M41124 <P>It is time to event outcome. We usually report probability of survival at a particular time (Such as progression-free survival at 3 years, x% for group A and y% for group B), but an journal reviewer requests us to report survival difference and 95% of the difference&nbsp; at a time point.</P><P>Thanks!&nbsp;</P> Thu, 25 Aug 2022 15:08:50 GMT https://communities.sas.com/t5/Statistical-Procedures/How-to-estimate-survival-difference-and-95-CI-of-the-difference/m-p/830344#M41124 lih 2022-08-25T15:08:50Z https://communities.sas.com/t5/Statistical-Procedures/How-to-estimate-survival-difference-and-95-CI-of-the-difference/m-p/980930#M49144 <P>Hi,</P><P>Have you find the method? Can it be only calculated manually?</P><P>Thanks</P> Wed, 17 Dec 2025 19:58:10 GMT https://communities.sas.com/t5/Statistical-Procedures/How-to-estimate-survival-difference-and-95-CI-of-the-difference/m-p/980930#M49144 kun315 2025-12-17T19:58:10Z