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st: RE: RE: Combining multiple observations by an ID variable
From
Claude Beaty <[email protected]>
To
"[email protected]" <[email protected]>
Subject
st: RE: RE: Combining multiple observations by an ID variable
Date
Tue, 12 Jun 2012 21:18:15 +0000
Yes, I do. But each visit identifier is unique, like the ID codes.
Claude A. Beaty Jr., M.D.
Halsted Surgical Resident
Cardiac Surgery Research Fellow
The Johns Hopkins Hospital
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Swanquist, Quinn Thomas
Sent: Tuesday, June 12, 2012 5:16 PM
To: [email protected]
Subject: st: RE: Combining multiple observations by an ID variable
Do you have an identifier for visit number (if not you could use date).
Sort as follows:
sort IDcode visit
then merge many to one as follows:
merge m:1 IDcode using "usingfile"
Quinn Swanquist
[email protected]
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Claude Beaty
Sent: Tuesday, June 12, 2012 5:02 PM
To: [email protected]
Subject: st: Combining multiple observations by an ID variable
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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