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st: re: problem using predictnl after obtaining non-linear estimates


From   Kit Baum <baum@bc.edu>
To   statalist@hsphsun2.harvard.edu
Subject   st: re: problem using predictnl after obtaining non-linear estimates
Date   Sat, 25 Oct 2008 17:26:12 -0400

< >
Lopa said

I wrote a simple non-linear least squares program. Using the estimates I am trying to find confidence intervals etc. for one of the components of the equation. The error message I keep getting is: "Warning: prediction doesn't vary with respect to e(b)." and it calculates the predicted value but does not generate standard errors etc.

Presumably you mean a program for use with -nl-. If you would show us the program, we might be able to figure out what is (or isn't) going on...

Kit Baum, Boston College Economics and DIW Berlin
http://ideas.repec.org/e/pba1.html
An Introduction to Modern Econometrics Using Stata:
http://www.stata-press.com/books/imeus.html


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