https://communities.sas.com/t5/Graphics-Programming/Is-it-possible-to-obtain-bootstrap-95-pointwise-confidence/m-p/252395#M9137 <P>Hello,</P><P>&nbsp;</P><P>An option might be to use proc surveyselect to generate your resampled dataset, and then afterwards use proc lifetest on that dataset to obtain your 95% pointwise confidence intervals.</P><P>&nbsp;</P><P>Many thanks,</P> Thu, 25 Feb 2016 15:38:02 GMT djrisks 2016-02-25T15:38:02Z https://communities.sas.com/t5/Graphics-Programming/Is-it-possible-to-obtain-bootstrap-95-pointwise-confidence/m-p/252389#M9135 <P>Hello,&nbsp;</P><P>&nbsp;</P><P>I am wondering if it will be possible for me to obtain a bootstrap 95% pointwise confidence interval on my survival function in SAS? I am working with proc iclifetest with code:</P><P>&nbsp;</P><P>proc iclifetest data=A bootstrap(nboot=500 seed=123) plots=(survival);<BR />time (survival, died);<BR />run;</P><P>&nbsp;</P><P>I know you can obtain a bootstrap confidence interval using proc tspline&nbsp;but I cannot figure out how to do this for a survival function.&nbsp;</P><P>&nbsp;</P><P>Thank you for any help!&nbsp;</P> Thu, 25 Feb 2016 15:17:36 GMT https://communities.sas.com/t5/Graphics-Programming/Is-it-possible-to-obtain-bootstrap-95-pointwise-confidence/m-p/252389#M9135 ejulianne 2016-02-25T15:17:36Z https://communities.sas.com/t5/Graphics-Programming/Is-it-possible-to-obtain-bootstrap-95-pointwise-confidence/m-p/252395#M9137 <P>Hello,</P><P>&nbsp;</P><P>An option might be to use proc surveyselect to generate your resampled dataset, and then afterwards use proc lifetest on that dataset to obtain your 95% pointwise confidence intervals.</P><P>&nbsp;</P><P>Many thanks,</P> Thu, 25 Feb 2016 15:38:02 GMT https://communities.sas.com/t5/Graphics-Programming/Is-it-possible-to-obtain-bootstrap-95-pointwise-confidence/m-p/252395#M9137 djrisks 2016-02-25T15:38:02Z