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st: Re: problem with creating dummy variables with xi (was: no subject)
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I tried to reproduce the Stata behaviour that you described, but I did
not succeed. I would think that it would help a lot if you could mail
more details (code, output, etc..) . to the list.
On 8/29/05, Federica Demaria <email@example.com> wrote:
> Dear all,
> I have a panel of 7 countries, identified by the variable id. When I run the following regression
> xi: reg y x1 x2 i.year i.id
> as expected, Stata omits the first dummy of both the id and year sets of dummies.
> The strange thing is that it also drops another dummy variable of both the mentioned sets of dummies, but it uses in the estimation the corresponding country and year.
> Could you please help me in understanding the reason behind this dropping?
> thank you in advance
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