Heckman self-selection issue
Posted: Mon Oct 10, 2011 8:35 pm
Hi,
I am trying to estimate the effect of CEO duality on firm performance using Heckman two-step procedure. The problem I have now is the program shows a message of insufficient number of observations. I am guessing that my sample is too small to produce any results? Total sample is 157 with 150 firms=0 and 7 firms=1.
How could I solve this problem?
Cheers
I am trying to estimate the effect of CEO duality on firm performance using Heckman two-step procedure. The problem I have now is the program shows a message of insufficient number of observations. I am guessing that my sample is too small to produce any results? Total sample is 157 with 150 firms=0 and 7 firms=1.
How could I solve this problem?
Cheers