https://communities.sas.com/t5/Statistical-Procedures/How-to-compare-two-dates-in-the-different-categories-of-the-same/m-p/885401#M43846 Yes there are different values in the paramcd but for the one condition there are two instances and if start date of ttadjcvd equal to the startday of the ttdeath then I need to change the data of ttdeath to ttadjcvd Wed, 19 Jul 2023 05:59:31 GMT sah_biostat 2023-07-19T05:59:31Z https://communities.sas.com/t5/Statistical-Procedures/How-to-compare-two-dates-in-the-different-categories-of-the-same/m-p/885376#M43844 <P>Hello team,</P><P>&nbsp;</P><P>I would like to compare the two dates of the same variable but of the different categories.</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="sah_biostat_0-1689717970770.png" style="width: 400px;"><img src="https://communities.sas.com/t5/image/serverpage/image-id/85906i143B4C820894AEC5/image-size/medium?v=v2&amp;px=400" role="button" title="sah_biostat_0-1689717970770.png" alt="sah_biostat_0-1689717970770.png" /></span></P><P>My task here is to compare startdt of ttdeath with the startdt of ttadjcvd and if both are equal then I need to make ttdeath row values&nbsp; same as the ttadjcvd.</P><P>&nbsp;</P><P>Can you please help me in this.</P><P>Thank you</P><P>&nbsp;</P> Tue, 18 Jul 2023 22:10:16 GMT https://communities.sas.com/t5/Statistical-Procedures/How-to-compare-two-dates-in-the-different-categories-of-the-same/m-p/885376#M43844 sah_biostat 2023-07-18T22:10:16Z https://communities.sas.com/t5/Statistical-Procedures/How-to-compare-two-dates-in-the-different-categories-of-the-same/m-p/885387#M43845 <P>&nbsp;</P> <P>Are you saying that you have a dataset, in which the variable PARAMCD has a single instance of the value TTDEATH, and a single instance of the value TTADJCVD?&nbsp; Also, is there a known order of observations in the dataset?</P> Wed, 19 Jul 2023 01:32:04 GMT https://communities.sas.com/t5/Statistical-Procedures/How-to-compare-two-dates-in-the-different-categories-of-the-same/m-p/885387#M43845 mkeintz 2023-07-19T01:32:04Z https://communities.sas.com/t5/Statistical-Procedures/How-to-compare-two-dates-in-the-different-categories-of-the-same/m-p/885401#M43846 Yes there are different values in the paramcd but for the one condition there are two instances and if start date of ttadjcvd equal to the startday of the ttdeath then I need to change the data of ttdeath to ttadjcvd Wed, 19 Jul 2023 05:59:31 GMT https://communities.sas.com/t5/Statistical-Procedures/How-to-compare-two-dates-in-the-different-categories-of-the-same/m-p/885401#M43846 sah_biostat 2023-07-19T05:59:31Z