st: Different Samples, same coefficient

[daniel cassar <danicassar@yahoo.com>]

I am running a cross crountry growth regression, but
when I divide the sample between democracies and
non-democracies, the coefficients for one regressor
does not change (in both cases it is -0.053), but
t-statistics are quite different. I have revised the
democracy codings and other data; they are OK, so that
is not the reason why this is happening. 

Any ideas what may be going on? 

Thanks in advance. I really appreciate any inputs you
may have. 

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