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
<[email protected]> 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
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