Wednesday, March 22, 2006

st: RE: RE: list subjects with a similar value

Whoa! The question was just about _listing_. You just changed Raoul's dataset by throwing much of it away.

duplicates tag dateofbirth, gen(tag) sort dateofbirth list id dateofbirth if tag

Nick n.j.cox@durham.ac.uk

Marino, Jennifer > Maybe try something along these lines: > > duplicates tag dateofbirth, gen(tag) > drop if tag==0 > sort dateofbirth > by dateofbirth: list id

Raoul C Reulen > I have a large database and would like to list the idnumber of all > subjects with the same date of birth. How do I do this? I have tried > .duplicate, but can figure out how to do it. Thanks.

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