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st: RE: Sum of different values per column


From   "Martin Weiss" <martin.weiss1@gmx.de>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: Sum of different values per column
Date   Thu, 11 Dec 2008 13:44:13 +0100

Line for the server...

***********
by id, sort : egen float sumpc = total(pillcount)
***********

HTH
Martin

-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Ziad El-Khatib
Sent: Thursday, December 11, 2008 1:27 PM
To: statalist@hsphsun2.harvard.edu
Subject: st: Sum of different values per column

Hi!
It is a cohort dataset, I want to sum one measurement over time, example
below:

id            visit            pillcount           sumpc
101           1                 20                    .
101           2                 40                    .
101           3                 20                    80
102
etc..


Any tips how to create sumpc variable?


Thank you and best regards
ziad

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