[R] mantelhaen.test for more than two groups?

From: Katrin Schweitzer <Katrin.Schweitzer_at_ims.uni-stuttgart.de>
Date: Wed 27 Apr 2005 - 02:09:41 EST


Dear All,

I'd like to perform the generalized Cochran-Mantel-Haenszel-Test (as described in Agresti (1990), Categorical Data Analysis) for my nominal data.

My problem is that I have more than two groups. In fact I think I'd need an 5-dimensional array for the response variable, the control variable and three group variables.
Could you please tell me if this is possible in R - and if yes how I am
supposed to do this?

By now I get an error message:
>MyData<-array(c(21,6,0,18,8,1,46,9,2,12,8,1,35,3,7,9,2,8,58,5,11,3,2,4,14,0,0,21,0,0,26,0,0,12,0,0,32,0,0,25,0,0,62,0,0,16,0,0),dim=c(3,2,2,2,2))
>mantelhaen.test(MyData)

Error in mantelhaen.test(MyData) : x must be a 3-dimensional array
>

I'm using R Version 1.9.1 on a Linux machine.

I apologize in case I am completely wrong by choosing this test, which might be the fact as this is my very first struggle with statistics... :)

In the hope of not losing it,
thank you very much for any help,
:) Kati



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