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Re: st: Tests for trends in RCT subgroups (-metan-, -meta-, other?)

From   Roger Harbord <[email protected]>
To   [email protected]
Subject   Re: st: Tests for trends in RCT subgroups (-metan-, -meta-, other?)
Date   Sat, 11 Jun 2005 08:59:59 +0100

There's a Stata faq on tests for trend that is well worth reading:

Not completely clear from your description of the problem but i doubt that meta-analysis commands are the way to go.


--On 10 June 2005 15:45 +0100 Matthew Sydes <[email protected]> wrote:

[Using Stata 8; impending upgrade to Stata 9]

Good afternoon,

I am interested in performing tests of trend in ordered subgroups from a
single randomised controlled trial.  It is possible to use meta-analysis
commands for this purpose, pretending that each subgroup is a separate
trial.  I have investigated the -meta- and -metan- commands.  However,
their tests for heterogeneity only seem to deal in global tests rather
than tests for trends.

Like numbers-at-risk on KM plots, subgroup trend tests are an issue I
often wrangle with and find that I can solve only outside of Stata (albeit
somewhat unsatisfactorily and unloggable fashion).

Any help on how I may address this matter within Stata would be much

Kind regards,


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