Hypothesis test for odds ratios

Question

I have two possible exposure variables (A and B) for use in a statistical model predicting a binary health outcome. I have fitted models with each variable separately and now know that one variable is a better predictor of my outcome based on a comparison of R-squared and BIC values. However, the ORs for the two variables are quite similar with overlapping confidence intervals. The sample composition and size is the same for each model.

I would like to comment on whether the odds ratios are significantly different from one another. How can I do this?

Best Regards.

score 1 · Answer 1 · edited Apr 13 '17 at 12:44

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It looks like you are trying to compare two odds ratios. Try looking at

Statistical test for difference between two odds ratios?

edited Apr 13 '17 at 12:44

Community

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answered Oct 07 '12 at 19:14

Ken Dunn

151
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In this case the 2 ORs are not independent, I'd say. – boscovich Oct 07 '12 at 20:03
Hi - yes I did see the earlier post, but as a novice I need something with bit more explanation! – N26 Oct 07 '12 at 20:51
As pointed out above, can you assume independence? – Ken Dunn Oct 07 '12 at 20:58
I'm not sure. How would I evaluate that? Exposure A and Exposure B are correlated to some extent, but rho is about 0.5. – N26 Oct 08 '12 at 09:12

Hypothesis test for odds ratios

1 Answers1