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Re: st: Estimates save and lincom - Stata10


From   "Austin Nichols" <austinnichols@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Estimates save and lincom - Stata10
Date   Wed, 7 Nov 2007 12:02:58 -0500

Try
lincom _b[urban]+_b[age], eform

On 11/7/07, Spörri-Fahrni Adrian <spoerri@ispm.unibe.ch> wrote:
> Dear statalisters
>
> Estimate save is a great command when your regressions run for a long time and you want to do some post estimations later on. Often I use lincom after an estimation command. However, it doesn't work properly after estimates use...
>
> Here's an example:
>
> version 10
> use http://www.stata-press.com/data/r10/bangladesh.dta, clear
> logistic c_use urban age child*
> estimates save bangla1 , replace
>
> logistic c_use urban age
> estimates save bangla2 , replace
>
> clear all
>
> estimates use bangla1
> estimates store bangla1
> estimates use bangla2
> estimates store bangla2
>
> * the likelihood-ratio test works fine:
> lrtest bangla1 bangla2
>
> * but the lincom does not work (if the original dataset is not loaded):
> lincom urban+age, eform
>
> * a workaround is to create two empty variables:
> gen urban=.
> gen age=.
> lincom urban+age, eform
>
> Is there another way of using lincom after estimates use - without creating empty variables or loading the data?
>
> Thanks,
> Adrian
> spoerri@ispm.unibe.ch
>
>
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