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st: logistic regression confidenceintervals


From   "Fitzmaurice, A.E." <a.e.fitzmaurice@abdn.ac.uk>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   st: logistic regression confidenceintervals
Date   Thu, 9 Jun 2011 17:29:58 +0100

Hi

I have two different models in stata

One covers the period 1970-1999 and gives an odds ratio of 1.35 with a confidence interval of (1.10,1.64)

And the second is a subset of the data covering a shorter time period and gives odds ratios of 1.56 with confidence interval(1.17,2.07)

My question is , is there a way in stata to formally test if the change in the odds ratio is significant,

Thanks

Ann


Ann E Fitzmaurice
Medical Statistician
Immpact University of Aberdeen
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Tel: +44 (0)1224 553876
 Fax: +44 (0)1224 555704
Email: a.e.fitzmaurice@abdn.ac.uk




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