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st: warning: overlapping samples


From   [email protected]
To   [email protected]
Subject   st: warning: overlapping samples
Date   Thu, 28 Jun 2007 12:56:55 +0200

Dear statalist, I'm doing a oaxaca decomposition and I have this message before the estmation with oaxaca. What is it means?
thanks
warning: overlapping samples
(high estimates: female4; low estimates: male4)

Mean prediction 1 = 2.095566
Mean prediction 2 = 1.939635
------------------------------------------------------------------------------
| Coef. Std. Err. z P>|z| [95% Conf. Interval]
-------------+----------------------------------------------------------------
difference | .155931 .0301257 5.18 0.000 .0968858 .2149762
------------------------------------------------------------------------------

Linear decomposition
------------------------------------------------------------------------------
Total | Coef. Std. Err. z P>|z| [95% Conf. Interval]
-------------+----------------------------------------------------------------
three-fold |
endowments | -.6220027 .2610409 -2.38 0.017 -1.133633 -.110372
coefficients | -.1470742 .0839665 -1.75 0.080 -.3116456 .0174971
interaction | .9250079 .2727451 3.39 0.001 .3904373 1.459579
------------------------------------------------------------------------------



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