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Re: st: Panel Data XTSUM interpretation


From   "Mary E. Mackesy-Amiti" <[email protected]>
To   [email protected]
Subject   Re: st: Panel Data XTSUM interpretation
Date   Wed, 01 Jun 2011 16:45:45 -0500

Hint: You have an "average" of 3.74 observations per pid.
The number of observations per person varies.


On 6/1/2011 1:09 PM, Panel Count Data wrote:
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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--
Mary Ellen Mackesy-Amiti, Ph.D.
Research Assistant Professor
Community Outreach Intervention Projects (COIP)
School of Public Health m/c 923
Division of Epidemiology and Biostatistics
University of Illinois at Chicago
ph. 312-355-4892
fax: 312-996-1450

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