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Re: st: From: tunmise jones <tunmisejones@gmail.com>


From   "JVerkuilen (Gmail)" <jvverkuilen@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: From: tunmise jones <tunmisejones@gmail.com>
Date   Tue, 5 Mar 2013 23:29:14 -0500

On Tue, Mar 5, 2013 at 11:11 PM,  <owner-statalist@hsphsun2.harvard.edu> wrote:

> FP is measured as the ratio of foreign employment to total employment
> in a given industry. I generate the variable FP using the following
> commands:
>
> -bys ind year: egen F_EMP = total(employment) if Foreign ==1
>
> gen FP= F_EMP/IND_EMP
>
>
> The FP variable is only generated for foreign firms. How then can this
> be manipulated so I can regress foreign participation against
> employment growth of domestic firms only (Foreign=0)?


If the values tend to be between say .3 and .7 and are based on
essentially the same N within each industry then an ordinary linear
panel model is likely to work fine. If not, you need to deal with the
skew and would likely benefit from using a model such as -xtmelogit-
with the count/total formulation for grouped binomial data. There are
other possibilities, such as using -gee-.


-- 
JVVerkuilen, PhD
jvverkuilen@gmail.com

"It is like a finger pointing away to the moon. Do not concentrate on
the finger or you will miss all that heavenly glory." --Bruce Lee,
Enter the Dragon (1973)
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