st: WG: XML TAB - inconsistent p-value output

["Kleindienst, Ingo" <Ingo.Kleindienst@whu.edu>]

Dear Statalisters,

I have the following question regarding xml_tab

I regularly use xml_tab to save results in Excel. However, I have no encountered some inconsistencies between the results shown in the STATA results monitor and the Excel-Output generated by xml_tab. 
The coefficents are consistent between the STATA results monitor and the Excel-output created by xml_tab. However, there is what seems to be a non-random deviation between the p-values that are shown in the STATA results monitor and the respective Excel-output using xml_tab. In particular, the Excel-output consistently shows lower p-values than are reported in the STATA results monitor.

As an example: The p-value shown in the STATA results monitor is 0.022 for a certain variable. The respective Excel-output using first the command "estimates store modelX" and then the command "xml_tab modelX , p save(C:\ \Desktop\results_paper.xls)" leads to a p-value of only 0.014 for the respective variable.

The problem with inconsistent p-values occur when using the "xtscc" STATA command (Driscoll-Kraay panel estimator)

So, I am wondering what the problem here is? Am I missing something?

I would be very happy, if you could give me some hints.

Best regards

Ingo


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