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st: gllamm


From   André Paul <hcpats@hotmail.fr>
To   statalist@hsphsun2.harvard.edu
Subject   st: gllamm
Date   Mon, 05 Jun 2006 11:34:12 +0200

Dear all,

In the paper: Lanjouw & Schankerman (2004) "Patent quality and research productivity: measuring innovation with multiple indicators" Economic Journal, 114, the authors create a "patent quality index" by estimating a factor model with multiple indicator with one latent common factor. In other words, they use 4 patent related indicators to derive the "patent quality index".

My question is the following:
is it possible to do such a thing with gllamm? and if yes, are there any "tutorials" or references explaining the methodology?

Thanks in advance,
André

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