Hi,
I have got the following design:
3 groups of individuals and for each individual a binary outcome at two
points in time: pre and post. This gives my the following table:
G1 G2 G3
t1-yes 70% 40% 30%
t2-yes 80% 60% 20%
If I could use GLM, I would have an 3 x 2(group x pre/post)-GLM, with
the second factor being a within factor and the possibility to
differentiate between main and interaction effects.
Since my outcome is binary (yes-no) and I just want to use the
yes-portions as outcome, I have no idea which test to use. Is it
possible to use a chiČ-test, although one of the factors is a within factor?
Thanks for any help in advance,
Stefan
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