--- On Mon, 19/10/09, stata user wrote:
> I have a question on how to calculate confidence intervals
> for the difference between two predicted values.
<snip>
> Also, what if I want to find Var(Y_in/Y_out)?--i.e. now we
> want to estimate the variance of a nonlinear function of
> the two predicted values.
I am not quite sure what it is exactly that you are trying to do:
do you expect to get one number out of this calculation, or a
number for every observation in your data, how do you want to
match your observed values with your counterfactual values, etc.
So the only advise I can give you is to take a look at -lincom-,
-nlcom-, and -predictnl-.
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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