st: Marginal homogeneity test

[Milena Przheska <milena.przheska@cosmicdevelopment.com>]

Dear Statalist members,

I am puzzled with the outcome of the -symmetry- command

I have a data set with the following variables observation_id case1 case2

After running the command

symmetry case1 case2

The output was for the tests was

                                                              chi2
df        Prob>chi2

Symmetry (asymptotic)                       |     92.00      1         0.0000
Marginal homogeneity (Stuart-Maxwell) |     92.00      38       0.0000


But in the table produced from the command all the elements were 0 except
for the diagonals.

Why do the tests indicate rejection of the null hypothesis?

I thank in advance all who read and respond to my question.

Best,
Milena Przheska
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