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st: regplot.ado after xtmixed, fixed and fixed-plus-random predictions, Stata11.2


From   "Steve Rothenberg" <drlead@prodigy.net.mx>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: regplot.ado after xtmixed, fixed and fixed-plus-random predictions, Stata11.2
Date   Tue, 9 Aug 2011 16:13:36 -0500

I've successfully used version 2.2.0 (30 March 2009) of -regplot- after
-xtmixed-.  -regplot- is one of Nick Cox's contributions to Stata Journal
(SJ10-1; gr0009_1), part of his modeldiag package.

I've looked over the code from the ado file and it seems that the section:
	// get fit 
      tempvar fit
	qui predict `fit' if e(sample)

uses predict with no option, which is the default predict (xb), producing
estimated fixed effects predictions.

If I wanted to change the command (renaming it of course) so that it used
the predicted fixed plus predicted random effects instead of just the fixed
effect predictions, could I change the above to:
	// get fit 
      tempvar fit
	qui predict `fit' if e(sample), fitted

to obtain and plot those fitted values without changing other code in the
ado file?

Steve Rothenberg
National Institute of Public Health
Cuernavaca, Morelos, Mexico

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