Statalist


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

Re: st: Standard Error on a Survival median, weighted data


From   Steven Samuels <samplerx@earthlink.net>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Standard Error on a Survival median, weighted data
Date   Mon, 22 Dec 2008 09:08:22 -0500

On December 17, Millie.Marston wrote:

> I have weighted data but need confidence intervals on the median  
> survival time.   I can pick out the median and get it to come out  
> in sts list (see below)  but the confidence intervals are  
> suppressed  because the data is weighted.  Does anyone know how can  
> I get confidence intervals on the median survival with weighted  
> data without assuming a parametric model



You haven't stated whether the data come from a complex survey.  Even  
if probability weights are the only design feature, I suggest that  
you  -svyset- your data.  Then download  -svybsamp2- (resampling for  
complex survey data)  from SSC, and use it to bootstrap -stsum- .


-Steve


Steven Samuels
845-246-0774
18 Cantine's Island
Saugerties, NY 12477
EFax: 208-498-7441





*
*   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   |   What's new   |   Site index