<>
Are you planning to reuse "scale" anywhere else? If not, your code could
just be
*************
summ phi if x==1, mean
gen effect = _b[x]*r(mean)
*************
BTW, where does the "_result" syntax come from? Even -hsearch _result-
struggles to come up with any good matches. This code does still work under
Stata 11, even without changing the -version-:
*************
sysuse auto, clear
su mp
disp_res
di _result(3)
*************
HTH
Martin
-----Ursprüngliche Nachricht-----
Von: [email protected]
[mailto:[email protected]] Im Auftrag von Sergio I Prada
Gesendet: Mittwoch, 4. November 2009 21:32
An: [email protected]
Betreff: st: help with margins syntax
Sorry, here a correction on the code
x is binary and it is the variable of interest in a causal model
tobit y x a b, ll(0)
predict phi, pr(0,.)
summ phi if x==1
scalar define scale = _result(3)
gen effect = _b[x]*scale
--
Sergio
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