R help - Jun 2013 - twoby2 (Odds Ratio) for variables with 3 or more levels

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)
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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