Hi, I am using SAS V9.4 to work with a dataset where there are more than one observations for a person. I am interested in a single observation for a person; however when I sort by descending order and select the first observation per case ID, I get a dataset much smaller than the dataset I get if I sort by the SAS default of ascending order. The two numbers aren't even close. Any ideas as to why this could be happening? PROC SORT data=temp1;
BY case_number value;
DATA TEMP2;
SET TEMP1;
BY case_number value;
if FIRST.case_number; PROC SORT data=temp1;
BY case_number descending value;
DATA TEMP2;
SET TEMP1;
BY case_number descending value;
if FIRST.case_number;
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