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st: clear estimated coefficient
From
natasha agarwal <[email protected]>
To
[email protected]
Subject
st: clear estimated coefficient
Date
Wed, 20 Mar 2013 20:59:27 +0530
Dear All,
Please accept my apologies for the previous post.
I want to estimate production function for each industry and calculate
the predicted output for each industry. To do so, I estimate the
following regressions
levpet lnrval if inm==1, free(lnw) proxy(lnb) capital(lnk) valueadd
gen yhat1 = _b[lnk] * lnk +_b[lnw]* lnw if inm==1
levpet lnrval if inm==2, free(lnw) proxy(lnb) capital(lnk) valueadd
gen yhat2 = _b[lnk] * lnk +_b[lnw]* lnw if inm==2
however yhat2 takes _b of the regression where inm==1 and not inm==2.
I tried using clear matrix, scalar drop _all, but the results do not change.
Can you please help me with the same ?
Please note that levpet is a user written programme available as a
stata module by levinsohn and petrin in their co-authored paper in
2003. Stata Journal article of the same can be accessed at
http://www.stata-journal.com/sjpdf.html?articlenum=st0060. The same
can be downloaded as ssc install levpet
Thanks,
Natasha
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