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st: Re: sum across observations until a certain cutpoint
Well, if you want the running sum, look at -help sum()-. But maybe you could
give us a peek at your data structure, that would assist in answering your
question...
HTH
Martin
_______________________
----- Original Message -----
From: "Amanda Botticello" <[email protected]>
To: <[email protected]>
Sent: Sunday, November 09, 2008 3:12 PM
Subject: st: sum across observations until a certain cutpoint
I have a dataset of test items and the time (in seconds)to complete each
item. I need to create a variable that sums the time variables up to a
certain number -- i.e., 60, 90, 120 seconds. Is there a way I can use the
egen newvar = rowtot (time*) command to count up to 60 seconds, etc?
Amanda L. Botticello, PhD, MPH
Outcomes Research Scientist
Kessler Medical Rehabilitation Research and Education Center
Assistant Professor
Department of Physical Medicine & Rehabilitation
UMDNJ-New Jersey Medical School
1199 Pleasant Valley Way
West Orange, NJ 07052
phone: (973)243-6973
email: [email protected]
The information in this transmission is intended for official use of the
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