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Re: st: RE: finding duplicates in two groups
-cross- will give you all pairs of observations from two data sets.
-Steve
On Aug 15, 2008, at 8:27 AM, Martin Weiss wrote:
Not sure what "for each.." is supposed to mean. If you want
agreement in
terms of the values of one of them,
*********
clear*
set obs 10000
g a =runiform()<0.7
g b =runiform()<0.7
g dummy=a==b
*see examples
l in 1/100
*********
If you want to turn one variable into two along the lines of group
membership, - separate- might be handy...
HTH
Martin
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Michael
McCulloch
Sent: Friday, August 15, 2008 5:58 AM
To: Statalist
Subject: st: finding duplicates in two groups
Dear Statalist members,
I have a dataset containing survival data, in which exposure groups
are A and B.
I wish to find records in group A that share the same values in group
B, for each of several fields:
age
date of diagnosis
date of death
I have studied the commands dups and duplicates but don't see how
they can handle finding values from two different groups sharing the
same values. I'd appreciate any suggestions or pointers.
--
Best wishes,
Michael McCulloch
Pine Street Foundation
124 Pine St., San Anselmo, CA 94960-2674
Tel: (415) 407-1357
Fax: (415) 485-1065
[email protected]
www.pinestreetfoundation.org
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