st: computing elasticities

[Scott Cunningham <scunning@gmail.com>]

I've estimated a linear fixed effects model wherein the left-hand- 
side variable is a value that can be any non-negative integer, and  
the right-hand-side variable is a logged non-negative variable.  To  
compute the elasticity, is it simply:

. mfx, dyex

It seems like this is incorrect, based on what it gives me, so I  
wanted to be sure I was doing this correctly.

sc
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