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RE: st: RE: RE: Xtivreg2


From   "Schaffer, Mark E" <M.E.Schaffer@hw.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: RE: RE: Xtivreg2
Date   Mon, 3 Apr 2006 13:51:48 +0100

Max,

That looks like it might be a bug.  Am I correct to think that there are only 25 regressors?

One other question - what happens if you omit the weight command?

--Mark

> -----Original Message-----
> From: owner-statalist@hsphsun2.harvard.edu 
> [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of 
> kosak@gmx.de
> Sent: 03 April 2006 13:34
> To: statalist@hsphsun2.harvard.edu
> Subject: Re: st: RE: RE: Xtivreg2 
> 
> o.k.
> 
> the exact command is:
> 
> xtivreg2 wage  bild aerfahrung d_ajahr1- d_ajahr23 [aweight=weight],fe
> i(region) t(ajahr) robust cluster (region)
> 
> wage: average wage per region
> number of regions:72
> number of observations:1900
> error message:number of clusters must be greater than number 
> of instruments
> 
> Best,
> Max
> 
> 
>  --- Ursprüngliche Nachricht ---
> > Von: "Schaffer, Mark E" <M.E.Schaffer@hw.ac.uk>
> > An: <statalist@hsphsun2.harvard.edu>
> > Betreff: st: RE: RE: Xtivreg2 (formerly: Two way Fixed Effects & 
> > Autocorrelation&  Heteroskedasticity)
> > Datum: Mon, 3 Apr 2006 12:21:35 +0100
> > 
> > Indeed ... detective work can be fun, but not always. :)
> > 
> > Send the exact command you used and I'll see if I can work out what 
> > happened from that.
> > 
> > --Mark
> > 
> > > -----Original Message-----
> > > From: owner-statalist@hsphsun2.harvard.edu
> > > [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf 
> Of Nick Cox
> > > Sent: 03 April 2006 12:00
> > > To: statalist@hsphsun2.harvard.edu
> > > Subject: st: RE: Xtivreg2 (formerly: Two way Fixed Effects & 
> > > Autocorrelation& Heteroskedasticity)
> > > 
> > > Please edit emails. I removed several previous emails 
> from this, the 
> > > whole thread it seems.
> > > 
> > > Please show the experts
> > > 
> > > 	!!! exactly what you typed !!! 
> > > 
> > > Nick
> > > n.j.cox@durham.ac.uk
> > > 
> > > kosak@gmx.de
> > >  
> > > > >Thank you again,Mark.
> > > > I used xtrivreg2 and omitted (varlist2=varlist_iv) to
> > > estimate simple
> > > > fixed effect.I clustered on regions.Unfortunately I
> > > received the error
> > > > message:
> > > > number of clusters must be greater than number of
> > > instruments.(using
> > > > Stata
> > > > 8.2.)
> > > > Any suggestions whats wrong ?
> > > 
> > > *
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> > > 
> > 
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> 
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