st: estat firststage after using vce(cluster id)

[D-Ta <altruist81@gmx.de>]

Dear statalisters,

I am using the -ivregress- command with clustered standard errors in the 
following form:

ivregress 2sls y x1 x2  (t=z ) if adult==1, first vce(cluster id)

I then use -estat firststage- where I would like to save the F-stat of 
the first stage by -local fstat `r(mineig)'-

The latter works, as long as I dont use clustered standard errors in the 
regression, as soon as I do use them, there is no F-stat provided by the 
-estat firststage- .

Can someone explain me why and if there is a way to get the F-stat 
despite clustered standard errors?

Many thanks,
Darjusch








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