st: Tabodds continued

[Jean Bouyer <Bouyer@vjf.inserm.fr>]

Thanks for your answer. But, I had already check for this, and I 
don't think it is the solution because the variable agec6 has no 
value label (see below).

Jean


 tabodds ct agec6,or base(2)

---------------------------------------------------------------------------
       agec6 |  Odds Ratio       chi2       P>chi2     [95% Conf. Interval]
-------------+-------------------------------------------------------------
           0 |    1.469206       1.58       0.2082      0.804054   2.684604
           1 |    1.000000          .           .              .          .
           2 |    1.016810       0.02       0.8907      0.801593   1.289810
           3 |    1.613362      15.26       0.0001      1.266239   2.055644
           4 |    2.474453      40.25       0.0000      1.852346   3.305493
           5 |    7.670803      66.73       0.0000      4.304008  13.671262
---------------------------------------------------------------------------
Test of homogeneity (equal odds): chi2(5)  =   125.24
                                  Pr>chi2  =   0.0000

Score test for trend of odds:     chi2(1)  =    92.99
                                  Pr>chi2  =   0.0000

. tab agec6,nol

0:<20;1:20- |
24;2:25-29; |
3:30-34;4:3 |
5-39;5:>=40 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         51        1.74        1.74
          1 |        476       16.20       17.94
          2 |       1085       36.93       54.87
          3 |        864       29.41       84.28
          4 |        380       12.93       97.21
          5 |         82        2.79      100.00
------------+-----------------------------------
      Total |       2938      100.00



> Jean Bouyer <Bouyer@vjf.inserm.fr> asks:
>
> > Is there a (new?) problem with tabodds ?  It looks like the option base(#)
> > selects the category of expvar with range # instead of the category with
> > value #.
>
> > Here is an example of what I obtain :
>
> > . tabodds ct agec6,or base(2)
>
> > ---------------------------------------------------------------------------
> >         agec6 |  Odds Ratio       chi2       P>chi2     [95% 
> Conf. Interval]
> > -------------+-------------------------------------------------------------
> >             0 |    1.469206       1.58       0.2082      0.804054 
> 2.684604
> >             1 |    1.000000          .           .              . 
> .
> >             2 |    1.016810       0.02       0.8907      0.801593 
> 1.289810
>
> [etc.]
>
> One possibility is that the "1" in the "agec6" is not the value of the -agec6-
> variable, but a value label instead, and that the actual value of -agec6- is
> 2, but is labeled as a 1.
>
> If, after checking for this, you are still exhibiting weird behavior let
> me know and I can take a closer look.
>
> - --Bobby
> rgutierrez@stata.com



---------------------------------------------------------------------- 
--------------
Jean BOUYER
INSERM U 569, HOPITAL DE BICETRE, 82 RUE DU GENERAL LECLERC
94276 LE KREMLIN-BICETRE CEDEX - FRANCE
---------------------------------------------------------------------- 
---------------
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