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st: stpiece


From   "Bradley, Steve" <Steve_Bradley@baylor.edu>
To   "'statalist@hsphsun2.harvard.edu'" <statalist@hsphsun2.harvard.edu>
Subject   st: stpiece
Date   Fri, 17 Jul 2009 15:15:40 -0500

I am having trouble with the time varying variable using tv( ).  For some reason it only gives me two varying with time piece outputs when I would expect it with all the time pieces.

Here is my code

stpiece  control,  tp ( 1 2 to 11) nopre tv(iv  ) nohr

My output gives me

     _t |      Coef.   Std. Err.      z    P>|z|     [95% Conf. Interval]
-------------+----------------------------------------------------------------
         tp1 |  -.7764435   .2000567    -3.88   0.000    -1.168547   -.3843396
         tp2 |  -1.051184   .1766176    -5.95   0.000    -1.397349   -.7050204
         tp3 |  -.7586245   .1795255    -4.23   0.000    -1.110488   -.4067609
         tp4 |  -.7826684   .1790165    -4.37   0.000    -1.133534   -.4318026
         tp5 |  -1.691474    .190076    -8.90   0.000    -2.064016   -1.318932
         tp6 |  -2.254498   .2174437   -10.37   0.000     -2.68068   -1.828316
         tp7 |  -2.560544   .2272271   -11.27   0.000    -3.005901   -2.115187
         tp8 |  -2.686374   .2233316   -12.03   0.000    -3.124096   -2.248652
         tp9 |  -2.929253   .2504891   -11.69   0.000    -3.420202   -2.438303
        tp10 |  -3.468904   .2825962   -12.28   0.000    -4.022782   -2.915025
        tp11 |  -3.693004   .2971254   -12.43   0.000     -4.27536   -3.110649
        tp12 |  -3.667181   .3393924   -10.81   0.000    -4.332378   -3.001984
     tpiv1 |   .0428352   .0684749     0.63   0.532    -.0913731    .1770436
     tpiv2 |  -.0003635   .0410969    -0.01   0.993    -.0809119    .0801849
 control |   -1.63216   .1473032   -11.08   0.000    -1.920869   -1.343451

Any help would be appreciated.

Steven W. Bradley, Ph.D.
Department of Management & Entrepreneurship
One Bear Place #98006
Baylor University
Waco, TX  76798
(office) 254.710.3921
steve_bradley@baylor.edu


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