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st: RE: reg with xi and if exp

From   "Plattner, Dankwart" <[email protected]>
To   "'[email protected]'" <[email protected]>
Subject   st: RE: reg with xi and if exp
Date   Thu, 29 Aug 2002 18:28:16 +0200

Dear Nick, dear H�kon,
thank you very much for your helpful replies.
The method H�kon suggested works, and it might also work to define instead
another category of the variable as omitted.
However, Nick, when I have another base category then r2==15 the problem
with the dropped variables disappears: they are not any more dropped and
have good explanatory power, as expected. Though I see your point I feel
that the division of labour, as you call it so nicely,  between xi and the
reg command is not really helpful. At least it caused some headaches to me.

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