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ralph lauren polo

 
Ion Lapteacru
 
''Murphy-Topel adjustment of the variance-covariance matrix of a two-step panel data model: Evidence from competition-fragility nexus in banking''
( 2017, Vol. 37 No.2 )
 
 
We develop the Murphy-Topel adjustment of the variance-covariance matrix for two-step panel data models. We apply it on the competition-fragility nexus in banking with different samples for two equations. Indeed, this issue is often observed in this field of research. A competition measure of banks is constructed for each country (first equation), whereas a risk measure is regressed on the entire sample of countries (second equation). Any statistical adjustment will only provide approximate results for the second equation, because of possible correlations between the results of both models. As a precise adjustment, the Murphy-Topel method seems to be more appropriate.
 
 
Keywords: Banking, Murphy-Topel adjustment, bank competition, bank risk.
JEL: G2 - Financial Institutions and Services: General
C4 - Econometric and Statistical Methods: Special Topics
 
Manuscript Received : Jun 21 2016 Manuscript Accepted : May 01 2017

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