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st: Combining multiple observations by an ID variable
From
Claude Beaty <[email protected]>
To
"[email protected]" <[email protected]>
Subject
st: Combining multiple observations by an ID variable
Date
Tue, 12 Jun 2012 21:02:22 +0000
All,
I have a large dataset of observations in which individuals (~40,000 ID codes) were evaluated multiple times (5-10 visit numbers per individual) on over 70 variables. However, the data has been arranged so that each visit number is an observation, instead of each individual ID code as an observation. I need to merge this file with another file sorted by individual ID codes. How do I rearrange this data so that it is arranged by ID codes with consecutive follow up visits? Thanks
Claude A. Beaty Jr., M.D.
Halsted Surgical Resident
Cardiac Surgery Research Fellow
The Johns Hopkins Hospital
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