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st: questions about xtfisher and impute


From   Zamira Simkins <zs9814a@american.edu>
To   statalist@hsphsun2.harvard.edu
Subject   st: questions about xtfisher and impute
Date   Thu, 19 Jan 2006 14:30:58 -0500

I have an unbalanced panel and would like to test unit root. I found 
xtfisher and would like to know more about this command. Could someone 
recommend a good article/paper that discusses its econometrics and 
possibly compares its results with ipshin and similar panel unit root 
tests?

Also, I am hesitant about using impute to fill in missing values due to 
the increased measurement error, but many studies do use techniques 
to fill in missing data. I would appreciate if someone shares his/her 
views/thoughts on filling in missing data using impute and ipolate.

Thank you in advance
Zamira 
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