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Re: st: Bug in tabodds, cornfield


From   jlinhart@stata.com (Jean Marie Linhart, StataCorp LP)
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Bug in tabodds, cornfield
Date   Tue, 04 Oct 2005 10:49:50 -0500

Ricardo Ovaldia <ovaldia at yahoo dot com> wrote:

> I get an error when I request cornfield CI in -tabodds-. This seems
> to be a bug. Can anyone please verify. Thank you.
> 
> . tabodds vitb1p1 snp if case==1, or
> 
> ---------------------------------------------------------------------------
>          snp |  Odds Ratio       chi2       P>chi2    
> [95% Conf. Interval]
> -------------+-------------------------------------------------------------
>           CC |    1.000000          .           .     
>         .          .
>           CT |    0.901799       0.26       0.6086    
>  0.607030   1.339707
>           TT |    0.663223       2.01       0.1564    
>  0.374388   1.174892
> ---------------------------------------------------------------------------
> Test of homogeneity (equal odds): chi2(2)  =     2.02
>                                   Pr>chi2  =   0.3638
> 
> Score test for trend of odds:     chi2(1)  =     1.79
>                                   Pr>chi2  =   0.1811
> 
> . tabodds vitb1p1 snp if case==1, or cornf
> 
> --------------------------------------------------------------------------
>             |                               odds      
>     Cornfield
>        snp  |      cases     controls      ratio     
> [95% Conf. Interval]
> ------------+-------------------------------------------------------------
> '.' found where integer expected
> r(7);

This also looks like a bug to me.  I'll be looking into it and getting
it fixed.  It will probably be in the next ado-file update.

--Jean Marie
jlinhart@stata.com
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