Bookmark and Share

Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down on April 23, and its replacement, statalist.org is already up and running.


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

st: Skipped vists or gaps in survival analysis


From   Tasha Amin <tamin_wh@hotmail.com>
To   Stata list <statalist@hsphsun2.harvard.edu>
Subject   st: Skipped vists or gaps in survival analysis
Date   Mon, 27 Aug 2012 15:53:52 -0400

Hi all:

I have panel data with multiple visits per individual. Visits are every 6 months. I have -stset- the data and will be using incidence density sampling to get case-control sets (so -stset- followed by -sttocc- and then -clogit-). 

My question is, what is the best way to generate gaps for those with skipped visits?  For example, if someone comes at visit 1 and then comes after 2 years for visit 5, what is the best way to generate a gap in _t so that we don't incorporate the missing 2 years into analysis time? 

Is it using -stsplit- or is there some other way? Any suggestions would be appreciated.

Thanks,
Tasha Amin
PhD student, Epidemiology

 		 	   		  
*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   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   |   Site index