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st: reply to Martkyn Sherrif

From   "Lachenbruch, Peter" <>
To   "statalist (E-mail)" <>
Subject   st: reply to Martkyn Sherrif
Date   Mon, 31 Mar 2003 08:37:00 -0500

One possibility would be to use the following:
bysort id:: gen diff=x[1]-x[2] if _n==1

this would generate the differences and one could do a paired t-test on
them.  This is equivalent to McNemar's test asymptotically under the null
Alternatively, one could do a conditional logistic regression using id as a

Peter A. Lachenbruch, Ph. D.
Director, Division of Biostatistics
Phone    (301) 827-3320
FAX        (301) 827-5218

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