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Re: st: Counting Ulcers
From
"Dimitriy V. Masterov" <[email protected]>
To
[email protected]
Subject
Re: st: Counting Ulcers
Date
Thu, 7 Sep 2006 17:33:28 -0400
Try
bys id: egen type=sum(vi) if vi~=.
collapse type, by(id)
This will count people with missing observations as "." and not zero,
and it will avoid double-counting.
DVM
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