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Re: st: Questions about xtfrontier and predict
From
Scott Merryman <[email protected]>
To
[email protected]
Subject
Re: st: Questions about xtfrontier and predict
Date
Fri, 12 Aug 2011 13:19:20 -0500
http://www.stata.com/statalist/archive/2005-06/msg00578.html
Scott
On Thu, Aug 11, 2011 at 2:59 PM, Huerta, Tim <[email protected]> wrote:
>
> Hello everyone,
>
> First, thanks in advance for any help you can offer.
>
> Second, I was using xtfrontier to run a cost efficiency model using panel data. I thought everything was going well… However, I ran "predict" to get the technical efficiency and the values aren't what I expected them to be. What am I missing here? Shouldn't CSCE_XTCE_te be less than 1 for the Technical Efficiency?
>
> predict CSCE_XTCE_te, te
> predict CSCE_XTCE_u, u
> predict CSCE_XTCE_xb, xb
>
> . sum CSCE_XTCE_te CSCE_XTCE_u CSCE_XTCE_xb if CEMatch_SET == 1
>
> Variable | Obs Mean Std. Dev. Min Max
> -------------+--------------------------------------------------------
> CSCE_XTCE_te | 7818 4.871268 1.447222 1.245426 14.91451
> CSCE_XTCE_u | 8177 1.548295 .2953062 .2184742 2.694779
> CSCE_XTCE_xb | 7818 5.535017 1.038628 2.859497 8.786513
>
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