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Re: st: Matsize Increase Leads to Zero Model Degrees of Freedom


From   Alex MacKay <[email protected]>
To   [email protected]
Subject   Re: st: Matsize Increase Leads to Zero Model Degrees of Freedom
Date   Tue, 3 Sep 2013 09:42:07 -0500

Yes, it is the same model. I've just renamed fips to state_id.

Agreed that it is odd! When stata reports zero model degrees of
freedom, does that indicate that the coefficients were not estimated,
but instead "calibrated" (i.e. the number of linearly independent
observations matches the number coefficients)? I thought that was the
case, but this error seems to indicate otherwise.

Alex
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