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st: Re: Panel test for cointegration


From   "Rodrigo A. Alfaro" <raalfaroa@gmail.com>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: Re: Panel test for cointegration
Date   Thu, 23 Aug 2007 17:51:07 -0400

Marta,

It is well-documented in the FAQ of Statalist that you should provide full-references, such as Martoni (2007) ``Tests for everyone" Journal of Applied Democratician, Vol 45. Also you should start your search using -findit- command. In particular typing: findit unit root, you will get many source for that. Try -xtfisher- for your case.

Rodrigo.
PS: Minor point, the software is Stata not STATA.


----- Original Message ----- From: <M.Sanchez-Sache@lse.ac.uk>
To: <statalist@hsphsun2.harvard.edu>
Sent: Thursday, August 23, 2007 5:21 PM
Subject: st: Panel test for cointegration



Dear all

I'm using panel data (42 years and 9 sectors) and the panel test for units roots don't reject the hypotheses that my regressors have a unit root. Therefore, I want to test for cointegration among my variables (the dependent variable and 2 regressors). Johansen test is the test I would use for time series and, in fact, I used it for my panel data. However, I know that the specific cointegration tests for panel data (as Pedroni (1997, 1999, 2001) or Maddala and Wu (1999)) have been shown to be more powerful than the time series analog (Johansen or Augmented Engle-Granger). Do you know if there is a command in STATA to run Pedroni or Maddala and Wu tests?

Thanks in advance.

Best,

Marta.



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