Statalist


[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

Re: st: finding the last observation in a survival dataset


From   Maarten buis <maartenbuis@yahoo.co.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: finding the last observation in a survival dataset
Date   Sun, 27 Apr 2008 18:50:21 +0100 (BST)

-stdes- will give you that proportion.

-- Maarten

--- Michael McCulloch <mm@pinest.org> wrote:

> Hi,
> I would like to learn how to identify the last observation of each 
> individual subject within a longitudinal data set.
> 
> I'm using the hip2.dta  data set, and have run _stsplit_  to create 
> one observation per failure time for each subject. Note that subject 
> id==1 observed a failure during observation time, whereas subject 
> id==48 did not.
> 
> use hip2.dta, clear
> stsplit, at(failures) riskset(riskid)
> sort id time0
> list id time0 time1 protect fracture if id==1 | id==48
> 
> In order to estimate a subject's probability of being censored, I 
> will create a new variable, C, which is equal to zero for a subject's
> 
> last failure time if the subject was not censored, and is equal to 
> one subject was censored.
> 
> How can I identify the last observation of each individual subject 
> within a longitudinal data set, so that I can create my new variable 
> without having to manually search for that last observation?
> 
> 
> -- 
> 
> Best wishes,
> Michael McCulloch
> 
> 
> 
> Pine Street Foundation
> 124 Pine St., San Anselmo, CA 94960-2674
> Tel:	(415) 407-1357
> Fax:	(415) 485-1065
> mcculloch@pinestreetfoundation.org
> www.pinestreetfoundation.org
> *
> *   For searches and help try:
> *   http://www.stata.com/support/faqs/res/findit.html
> *   http://www.stata.com/support/statalist/faq
> *   http://www.ats.ucla.edu/stat/stata/
> 


-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands

visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434

+31 20 5986715

http://home.fsw.vu.nl/m.buis/
-----------------------------------------


      __________________________________________________________
Sent from Yahoo! Mail.
A Smarter Email http://uk.docs.yahoo.com/nowyoucan.html
*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/



© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index