Stata The Stata listserver
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

st: Limiting analysis time in Survival Analysis


From   Lisa Sharwood <lisans@unimelb.edu.au>
To   statalist@hsphsun2.harvard.edu
Subject   st: Limiting analysis time in Survival Analysis
Date   Tue, 25 May 2004 12:05:13 +1000

Hello
I have data with which I have performed a survival analysis graph, which represents the probability of seizure freedom over time in Years in the analysis. Now I am trying to re-analyse that data limiting the analysis time to after two years in the analysis. I am having difficulty doing this - as if I use a new variable created with only the pts who remain IN the study after two years and then do the analysis, it gives me a flat line for one variable which is incorrect. I have tried to limit the axis - ie setting the scale but am told in the manuals that stata will not do this.
I hope this makes sense.. thanks for your suggestions.
Lisa
*
* 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