You may want to consider a cumulative logit model which effectively
bifurcates an ordinal variable by utilizing the odds of being in a given
level or below (depending on your coding).


On Mon, Jun 10, 2013 at 12:27 PM, Vlatka Matkovic Puljic <vlatka.m@gmail.com
> wrote:

> Dear all,
>
> I am using Epi package to calculate Odds ratio in my bivariate analysis.
> How can I make *twoby2 *in variables that have 3 or more levels.
>
> For example:
> I have 4 level var (Age)
> m=matrix(c(290, 100,232, 201, 136, 99, 182, 240), nrow=4, ncol=2)
> library (Epi)
> twoby2(m)
>
> R gives me only
> Comparing : Row 1 vs. Row 2
>
> While I would like to have reference value in Row 1, and compare Row 2, Row
> 3 and Row 4 with it.
>
>
> Thanks for your help!
>
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>
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>



-- 
*James C. Whanger*
*
*

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