Re: [R] compare odds ratios

From: array chip <>
Date: Wed 28 Jun 2006 - 04:22:14 EST

Hi dear all, I haven't heard any suggestions on how to tackle the problem in my previous email yet. I searched on google and was not getting any useful information yet. I did get someone from google groups suggesting Cockran Mantel Haenszel test with each subject as the stratum. But as far as I understand, CMH test is to test whether the common odds ratio (assuming odds ratios across stratum are equal) is equal to 1, not really the question I was asking which was whether the 2 odds ratios were equal (doesn't matter if they are equal to 1). Also, someone suggested loglinear regression, but I am not sure either how to set things up for my problem.

One clarification to my original email: the 2 diagnostic tests were performed on the set set of patients, the issue here how to test whether the 2 odds ratios for the 2 diagnostic tests are equal.

Here is a hypothetical dataset, for example:


Hope some statistical experts would guide me some directions. Many thanks

> Hi there, is there any way to compare 2 odds ratios?
> I
> have two tests that are supposed to detect a disease
> presence. So for each test, I can compute an odds
> ratio. My problem is how can I compare the 2 tests
> by
> testing whether the 2 odds ratios are the same?
> Appreciate
> ______________________________________________
> mailing list
> PLEASE do read the posting guide!
> mailing list PLEASE do read the posting guide! Received on Wed Jun 28 04:27:13 2006

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.1.8, at Wed 28 Jun 2006 - 06:12:40 EST.

Mailing list information is available at Please read the posting guide before posting to the list.