Hi everyone, I have a dataset below.
for every subjid i have randno for only the baseline visit . i would like to carry forward that randno value both to screening and subsequent visits like 12weeks ,24weeks,32weeks. it has to be done like that by each subject id both upper row and below rows.
Data main;
Input subjid visit randno;
Cards
10001 screening .
10001 baseline 90001
10001 12_weeks .
10001 24_weeks .
10002 screening .
10002 baseline 90010
10002 12_weeks .
10002 48_weeks .
10003 screening .
10003 baseline 90011
10003 12_weeks .
10003 24_weeks .
10003 36_weeks .
;
Run;
can you suggest what method would be appropriate to proceed?
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