--- On Mon, 9/11/09, Dorothy Bridges wrote:
> Now I would like to generate predicted values of le, **as
> if** all of the method-a observations had been created using
> method b.
*------------------ begin example --------------------
sysuse uslifeexp.dta, clear
**(Imitating my actual data)
gen le_measure1=.
replace le_measure1=le-5 if year<=1950 | year==1965 | year==1972 | ///
year==1986 | year==1989
replace le_measure1=le if le_measure1==.
**The regression:
gen measuredummy=1
replace measuredummy=0 if le_measure1==le
regress le_measure1 year measuredummy
clonevar temp = measuredummy
replace measuredummy = 0
predict le0, xb
replace measuredummy = 1
predict le1, xb
replace measuredummy = temp
drop temp
twoway scatter le_measure1 year if measuredummy == 0 || ///
scatter le_measure1 year if measuredummy == 1 || ///
line le0 year || ///
line le1 year, ///
legend(order(1 "measure 0" ///
3 "measure 0" ///
- " " ///
2 "measure 1" ///
4 "measure 1" ))
*---------------------- end example -----------------------------
Hope this helps,
Maarten
--------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany
http://www.maartenbuis.nl
--------------------------
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