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st: Panel Data XTSUM interpretation


From   Panel Count Data <pcdgroup@maeconomics.org>
To   statalist@hsphsun2.harvard.edu
Subject   st: Panel Data XTSUM interpretation
Date   Wed, 1 Jun 2011 23:09:16 +0500

Hello Statlist Contributors!

I have a panel data on xlist which includes time variant and invariant
predictors. I need to know what causes my year vairable to show
between variations. My question is should or should not, the time
variable to show between variation in panel data. If not then how can
I interprete the following results.

Variable         |      Mean   Std. Dev.       Min        Max |    Observations
-----------------+--------------------------------------------+----------------
pid      overall |  6.85e+07   4.74e+07   1.00e+07   1.89e+08 |     N =   25173
         between |             4.92e+07   1.00e+07   1.89e+08 |     n =    6730
         within  |                    0   6.85e+07   6.85e+07 | T-bar = 3.74042
                 |                                            |
year     overall |  2004.614   2.541227       2001       2009 |     N =   25173
         between |             2.134371       2001       2009 |     n =    6730
         within  |              1.99288   1999.364   2009.864 | T-bar = 3.74042
                 |                                            |
male     overall |  .4876256   .4998568          0          1 |     N =   25173
         between |              .499941          0          1 |     n =    6730
         within  |                    0   .4876256   .4876256 | T-bar = 3.74042


Thanks
Khattak
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