On Fri, 22 Nov 2013, Pindar wrote:
when checking whether the coefficients of Poisson FE correspond to
those of
the Poisson model with unitdummies I noticed that when using the poisson
command without constant only the beta_hat of regressors starting from x2 on
were identical. When using global constant all estimated coefficients were
identical. [...]
Yes, it appears that the build-in "poisson" command is broken for the
no-constant case. We'll see to that shortly.
Allin Cottrell