Clinical SAS: Identify the overlap of dates in exposure intervals

[@nayakbibhuti085]

Nicely explained , could please tell me if we have different type of AEterm will available with this AE dataset how how do I check overlap dates in between Startdate and stop date

[@mycsg]

could you please elaborate or rephrase the question... i didn't get your question

[@nayakbibhuti085]

We can make it by using lag function within 5 line

[@mycsg]

lag solution is not efficient when overlapping date records are not consecutive ... it may not even work...

[@laurendai1731]

MERGE EX(IN=A) DATES03(IN=B) , Ex? SHOUBE MERGE DATES02(IN=A) DATES(IN=B)

[@mycsg]

no, the purpose of this merge is to visually examine the source records where at least one overlap exists...