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st: significance of grouped contributions in Oaxaca decomposition
Dear Stalist users,
A question regarding the Oaxaca decomposition:
I use the command : oaxaca group1 group2, de esave
to generate detailed Oaxaca decomposition results.
Thereafter I want to group the contributions of some binary variables
that result from a categorical one. E.g. I want to group contributions
from all the (binary) income quintiles to get a general contribution
To get the statistal significance of this grouped contribution I use
the command :
Now, the problem is that this only works for the "endowments
contribution". Through the _b command I cannot seem to get the
contributions from the coefficient and interaction effects. Although
they are visible when I do matlist e(b).
I cannot set a matrix and e.g. use A[1, columnumber] because then I
lose the standard errors of the estimates.
I would very much appreciate any helpful suggestion.
Ellen Van de Poel
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