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Re: st: Means of the first differences


From   Nick Cox <[email protected]>
To   [email protected]
Subject   Re: st: Means of the first differences
Date   Wed, 16 Feb 2011 23:21:40 +0000

Is this what you want?

. webuse grunfeld

. tsset
       panel variable:  company (strongly balanced)
        time variable:  year, 1935 to 1954
                delta:  1 year

. ds
company  year     invest   mvalue   kstock   time

. su D.mvalue

    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
      mvalue |
         D1. |       190    38.44584    378.6675    -2594.9     1583.2


On Wed, Feb 16, 2011 at 9:51 PM, Ehsan Latif <[email protected]> wrote:

> Can anyone please help me?
>  How do I estimate means of the first differences of the outcome variables in panel structure? What is the relevant Stata command?

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