Bookmark and Share

Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

st: emptycells(reweight)


From   "Valle, Giuseppina" <[email protected]>
To   "[email protected]" <[email protected]>
Subject   st: emptycells(reweight)
Date   Thu, 16 Jan 2014 16:48:43 +0000

Hello,

I am trying to estimate margins for an interaction term (3 x 5), but I have an empty cell. In order to reconcile this, have tried to use the emptycells(reweight) option. However, I am still getting the following:

This is from the regression:

timing#sexpart |
          1 1  |          0  (empty)
          1 3  |  -.8425747   1.120406    -0.75   0.453    -3.059825    1.374676
          1 4  |  -.3740791   1.035008    -0.36   0.718     -2.42233    1.674172
          1 5  |  -1.175772   .8898283    -1.32   0.189    -2.936716    .5851718
          3 1  |  -.6043734   .5221451    -1.16   0.249    -1.637683    .4289364
          3 3  |   -.203632   .3666424    -0.56   0.580    -.9292065    .5219424
          3 4  |   1.250838   .5659914     2.21   0.029      .130758    2.370919
          3 5  |  -.6449708   .4828192    -1.34   0.184    -1.600456    .3105142

This is from the margins using the following syntax:

margins timing#sexpart, subpop(if gender==1) asbalanced emptycells(reweight)

Predictive margins                                Number of obs   =       4886
                                                  Subpop. no. obs =       2082
Model VCE    : Linearized

Expression   : Pr(drinkw4), predict()
Empty cells  : reweight
at           : timing           (asbalanced)
               race             (asbalanced)
               famstw1          (asbalanced)
               respeduc         (asbalanced)
               respinc          (asbalanced)
               sexpart          (asbalanced)

--------------------------------------------------------------------------------
               |            Delta-method
               |     Margin   Std. Err.      z    P>|z|     [95% Conf. Interval]
---------------+----------------------------------------------------------------
timing#sexpart |
          1 1  |          .  (not estimable)
          1 2  |   .2007178   .1292118     1.55   0.120    -.0525326    .4539682
          1 3  |   .1723023   .0888076     1.94   0.052    -.0017573    .3463619
          1 4  |   .2542255   .1413226     1.80   0.072    -.0227617    .5312126
          1 5  |   .2081755   .0813572     2.56   0.011     .0487182    .3676327
          2 1  |   .0763753   .0326297     2.34   0.019     .0124223    .1403284
          2 2  |   .1468328   .0297079     4.94   0.000     .0886064    .2050593
          2 3  |   .2425471   .0450327     5.39   0.000     .1542846    .3308096
          2 4  |   .2508539   .0537633     4.67   0.000     .1454798     .356228
          2 5  |   .3561694   .0553567     6.43   0.000     .2476723    .4646665
          3 1  |   .0494258   .0169824     2.91   0.004     .0161408    .0827107
          3 2  |   .1634568   .0325718     5.02   0.000     .0996172    .2272964
          3 3  |   .2301516   .0512481     4.49   0.000     .1297071    .3305962
          3 4  |    .552356   .1150508     4.80   0.000     .3268606    .7778514
          3 5  |   .2537699   .0858682     2.96   0.003     .0854713    .4220684
--------------------------------------------------------------------------------

Is there something I am doing incorrectly? I have read much of what is the stata manual regarding this command, but it seems to still not be working. Any advice would be greatly appreciated!

Thanks,
Pina




*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/faqs/resources/statalist-faq/
*   http://www.ats.ucla.edu/stat/stata/


© Copyright 1996–2018 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   Site index