st: initial value of a regressor in panel data

[Humaira Asad <humairaasad@hotmail.com>]

Hi,
 
I am working with a panel of 107 countries over 1960 to 2010 averaged in five years data.
 
I have two questions:
 
1. How can I take initial value of say real gdp per capita as one of the regressors.
 
2. I have estimated the equations using xtabond, xtdpd etc but all the regressors are insignificant, how can i improve the estimates?
 
I have followed Cameron and Trivedi's Books Chap 9.




Humaira Asad
PhD Research Scholar


UoE Business School


University of Exeter, England 		 	   		  
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