Statalist


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

st: Olley Pakes using


From   Luigi Pascali <Luigi.Pascali@bc.edu>
To   statalist@hsphsun2.harvard.edu
Subject   st: Olley Pakes using
Date   Mon, 15 Dec 2008 14:37:06 -0500

I need to estimate a production function using the olley-pakes semiparametric estimation procedure. I am using the routine -opreg- (developed by Yasar, Raciborski, & Poi). 
I don't have firms that exit the panel and this seems to be a problem when running opreg. 
The option "exit" in the command is required. For this reason I have constructed a dummy (that I called E) which is equal to 0 in each period for every firm. 
Then I run the following command:
opreg lY, state(lK) proxy(lI) free(lL lM) exit(E)

where lY=ln(sales)
lk=ln(fixed assets)
lL=ln(employees)
lM=ln(intermediates)
lI=ln(investments)

I get the following message:

an error occurred when bootstrap executed opreg
r(2000);

I tried to run the same command "pretending" that some firms where leaving the market and everything worked fine.
I would really appreciate if anybody could tell me if I am making any mistake and how I can correct it.

Many thanks,

Luigi 

*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/



© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index