On Thu, 30 Mar 2000 11:22:32 -0500, JohnPeters <[EMAIL PROTECTED]>
wrote:
> I was wondering if someone could help me. I am interested in combining
> 2x2 tables from multiple studies. The test used is the McNemar's
> chi-sq. I have the raw data from each of these studies. What is the
> proper correction that should be used when combining the results.
That test is an approximation for the binomial - the test for 50% in
each group. Does that tell you enough so you can figure what to do?
I don't know what you are looking for as a 'correction' but there are
several different ways to combine results from multiple studies. Do
you elect to combine the p-levels or combine some <which?> measure of
the effect-size, and do you weight studies equally, or according to N,
or according to precision of result? - if that is different from N.
--
Rich Ulrich, [EMAIL PROTECTED]
http://www.pitt.edu/~wpilib/index.html
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