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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
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