<>
To capture the marginal effect in a variable,
*************
vers 10.1
sysuse auto, clear
reg mpg length turn
mfx
mat A= e(Xmfx_dydx)
gen mymargeffect= A[1,1]
l mymargeffect in 1/10, noo
*************
HTH
Martin
-----Ursprüngliche Nachricht-----
Von: [email protected]
[mailto:[email protected]] Im Auftrag von Dorothy Bridges
Gesendet: Dienstag, 8. September 2009 15:55
An: [email protected]
Betreff: st: Creating a variable taking the value of elasticity
Dear Statalist,
I have a simple dataset containing two variables, x and y. I regress
ln(y) on ln(x) and observe the coefficient on x as elasticity. I then
want to create a variable taking the value of this coefficient. How
would I do this? Something like local elas=e(b); gen elas=`elas',
except e(b) contains all the coefficients, and I just want one.
A related question: when I regress y on x and then input "mfx, eyex,"
the ey/ex value is not the same as the coefficient I obtain using
regress ln(y) ln(x). Why? Also: how would I extract the ey/ex value
from the mfx output in order to create a variable taking that value?
Thank you,
Dorothy
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