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
hypothesis.
Alternatively, one could do a conditional logistic regression using id as a
block.
Peter A. Lachenbruch, Ph. D.
Director, Division of Biostatistics
OBE/CBER/FDA
Phone (301) 827-3320
FAX (301) 827-5218
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