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

Re: st: test for heterogeneity


From   Stas Kolenikov <skolenik@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: test for heterogeneity
Date   Thu, 7 Oct 2004 14:18:27 -0400

Looks like this calls for an interaction term. Does -sts , test-
syntax allow for that? If not, then you would need to generate the
interaction (the product of the indicators) and put it into -streg-.

Stas

On Thu, 7 Oct 2004 13:28:38 +0100, Anthony Moorman
<a.v.moorman@soton.ac.uk> wrote:
> I need to perform a test for heterogeneity in the following situation:
> 
> A log-rank test - sts test - showed a significant difference in outcome
> between subgroups A and B.
> 
> The results of a repeated test stratifying by treatment X and Y -
> strata(treatment) detail - suggested that the difference between A and B
> only occurred with treatment Y.
> 
> I want to perform a test for heterogeneity to determine whether the effect
> between A and B is the same within the two treatment groups X and Y. How can
> I do this is Stata?


-- 
Stas Kolenikov
http://stas.kolenikov.name
*
*   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