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Re: st: RE: Areg, absorb

From   emanuele mazzini <>
Subject   Re: st: RE: Areg, absorb
Date   Mon, 11 Apr 2011 16:12:15 +0200

I may have find it out with the xi command, which sounds better. And i
also guess that later on I can export from the table I obtain only
some variables (the relevant ones) rather than all of them, thus
excluding the estimates of the dummies. Am I right?

Thank you.

2011/4/11 Nick Cox <>:
> So identifier is "country1 country2" and time variable "year"? Well,
> then -group(country1 country2 year)- will define a distinct (and
> unique) value for each observation, which is far too many dummies.
> Nick
> On Mon, Apr 11, 2011 at 2:48 PM, emanuele mazzini
> <> wrote:
>> Exactly country1 country2 and year.
>> 2011/4/11 Nick Cox <>:
>>> Everything depends on whether you want dummies for _combinations_ of
>>> -country1-, -country2- and -year-.
>>> What precisely defines a panel?
>>> Nick
>>> On Mon, Apr 11, 2011 at 1:30 PM, emanuele mazzini
>>> <> wrote:
>>>> I tried that but doesn't really work. Curiously, Stata reports
>>>> insufficient observations. That's kind of strange, however.
>>>> 2011/4/11 Jan Bryla <>:
>>>>> Would it not be possible for you to first generate group id's based on country1 country2 and year, and then use -areg- to control for each group? I think that would capture the desired effects.
>>>>> In that case it would be something like:
>>>>> Egen id=group(country1 country2 year)
>>>>> Areg ..., abs(id)
>>>>> /Jan Bryla
>>>>> -----Original Message-----
>>>>> From: [] On Behalf Of emanuele mazzini
>>>>> Sent: 11. april 2011 13:33
>>>>> To:
>>>>> Subject: st: Areg, absorb
>>>>> Dear all Stata users,
>>>>> I am trying to work out a regression with panel data in which I have
>>>>> to control for country1, country2 and year.
>>>>> I tried to ran a regression after creating a dummy for all three of
>>>>> them and obviously in the result Stata reports the estimates of all
>>>>> the dummies I created which I do not want to show in the output of the
>>>>> regression. I tried to get the same result with the command: areg...,
>>>>> absorb(varname)  but the point is that areg does not allow me to
>>>>> include more than one variable, and in this case I would need three.
>>>>> Hence, my brief question is: is there a way to include in the
>>>>> regression the fixed effects for country1, country2 and year without
>>>>> Stata showing all the coefficients of the dummies I create?
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