https://communities.sas.com/t5/SAS-Procedures/Confidence-interval-of-survival-probabilities-when-only-time-and/m-p/444218#M69368 <P>Hi,</P><P>I have a data with the Time and Survival variables. I am wondering how I can calculate the 95% confidence interval of the Survival probabilities. I found this in Excel ( <A href="http://www.real-statistics.com/survival-analysis/kaplan-meier-procedure/confidence-interval-for-the-survival-function/" rel="nofollow noopener" target="_blank">http://www.real-statistics.com/survival-analysis/kaplan-meier-procedure/confidence-interval-for-the-survival-function/</A>), but I am curious if it can be done with&nbsp;SAS in an easier way?</P><P>My data looks like this:</P><P>&nbsp;</P><P>Time Survival<BR />0 1<BR />1 0.99212<BR />2 0.93231<BR />3 0.91655<BR />4 0.96456<BR />…</P><P>&nbsp;</P><P>&nbsp;</P><P>Thanks,<BR />gib</P> Fri, 09 Mar 2018 19:17:27 GMT Gib 2018-03-09T19:17:27Z https://communities.sas.com/t5/SAS-Procedures/Confidence-interval-of-survival-probabilities-when-only-time-and/m-p/444218#M69368 <P>Hi,</P><P>I have a data with the Time and Survival variables. I am wondering how I can calculate the 95% confidence interval of the Survival probabilities. I found this in Excel ( <A href="http://www.real-statistics.com/survival-analysis/kaplan-meier-procedure/confidence-interval-for-the-survival-function/" rel="nofollow noopener" target="_blank">http://www.real-statistics.com/survival-analysis/kaplan-meier-procedure/confidence-interval-for-the-survival-function/</A>), but I am curious if it can be done with&nbsp;SAS in an easier way?</P><P>My data looks like this:</P><P>&nbsp;</P><P>Time Survival<BR />0 1<BR />1 0.99212<BR />2 0.93231<BR />3 0.91655<BR />4 0.96456<BR />…</P><P>&nbsp;</P><P>&nbsp;</P><P>Thanks,<BR />gib</P> Fri, 09 Mar 2018 19:17:27 GMT https://communities.sas.com/t5/SAS-Procedures/Confidence-interval-of-survival-probabilities-when-only-time-and/m-p/444218#M69368 Gib 2018-03-09T19:17:27Z https://communities.sas.com/t5/SAS-Procedures/Confidence-interval-of-survival-probabilities-when-only-time-and/m-p/444268#M69371 <P>If you're using PROC LIFETEST then you can use the SURVOUT option on PROC LIFETEST. This will output a dataset with the KM estimates and the confidence intervals. There's similar options if you're using LIFEREG or PHREG procedures.</P> <P>&nbsp;</P> <P>&nbsp;</P> <P><A href="http://support.sas.com/documentation/cdl/en/statug/68162/HTML/default/viewer.htm#statug_lifetest_details34.htm" target="_blank">http://support.sas.com/documentation/cdl/en/statug/68162/HTML/default/viewer.htm#statug_lifetest_details34.htm</A></P> <P>&nbsp;</P> <BLOCKQUOTE><HR /><a href="https://communities.sas.com/t5/user/viewprofilepage/user-id/192227">@Gib</a> wrote:<BR /> <P>Hi,</P> <P>I have a data with the Time and Survival variables. I am wondering how I can calculate the 95% confidence interval of the Survival probabilities. I found this in Excel ( <A href="http://www.real-statistics.com/survival-analysis/kaplan-meier-procedure/confidence-interval-for-the-survival-function/" target="_blank" rel="nofollow noopener">http://www.real-statistics.com/survival-analysis/kaplan-meier-procedure/confidence-interval-for-the-survival-function/</A>), but I am curious if it can be done with&nbsp;SAS in an easier way?</P> <P>My data looks like this:</P> <P>&nbsp;</P> <P>Time Survival<BR />0 1<BR />1 0.99212<BR />2 0.93231<BR />3 0.91655<BR />4 0.96456<BR />…</P> <P>&nbsp;</P> <P>&nbsp;</P> <P>Thanks,<BR />gib</P> <HR /></BLOCKQUOTE> <P>&nbsp;</P> Fri, 09 Mar 2018 21:02:15 GMT https://communities.sas.com/t5/SAS-Procedures/Confidence-interval-of-survival-probabilities-when-only-time-and/m-p/444268#M69371 Reeza 2018-03-09T21:02:15Z