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RE: st: best way to add up values sorted by a unique id


From   "Martin Weiss" <martin.weiss1@gmx.de>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: best way to add up values sorted by a unique id
Date   Thu, 24 Jun 2010 23:39:56 +0200

<>
Try NJC`s http://www.stata-journal.com/sjpdf.html?articlenum=pr0004 as well.
Sometimes you will need to use -bysort- instead of a mere -by-.


HTH
Martin


-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Richard Goldstein
Sent: Donnerstag, 24. Juni 2010 22:32
To: statalist@hsphsun2.harvard.edu
Subject: Re: st: best way to add up values sorted by a unique id

egen annfaminc=total(totalincome), by(unifam)

Rich

On 6/24/10 4:25 PM, Özlen D. Luznar wrote:
> Hi everyone,
> 
> I have a dataset where I am trying to calculate total family income
> identified by a unique family id "unifam".  Each person in the unifam has
> a totalannual income and I am trying to add totalannual income to
> calculate annual family income - at the unifam level.
> 
> For example
> 
> unifam==1  person=1 totalincome == 60
> unifam ==1 person=2 titalincome == 40
> 
> unifam=1  totalfamilyincome == 100
> 
> unifam ==2 person=1 totalincome = 100
> unifam==2 person=2 totalincome= 50
> unifam =2 person=3 totalincome =50
> 
> unifam =2 totalfamilyincome ==200
> 
> Thanks!
> 
> 
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