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st: FW: Question about polytomous/multinomial logistic regression


From   "Safaeian, Mahboobeh (NIH/NCI) [E]" <safaeianm@mail.nih.gov>
To   "'statalist@hsphsun2.harvard.edu'" <statalist@hsphsun2.harvard.edu>
Subject   st: FW: Question about polytomous/multinomial logistic regression
Date   Sat, 12 Oct 2013 18:03:14 +0000

Hello,

I am doing an analysis using polytomous logistic regression using health related data. My outcome variable has three categories with controls (reference category) and 2 different disease categories (case group1 and case group2).
The results for my exposure variable of interest show that compared to the reference category, case group1 has an odds ratio below one, and case group2 has an odds ratio above one as in the following table.
Any ideas on whether stata can compute pvalues that tests whether the 0.75 is different from the 1.38? is there an extra command?
Thank you in advance.

                
       		Case 1: Odds ratio (95%CI)          	 Case 2: Odds ratio (95%CI)
Exposure:            0.75 (1.00-1.68)                                 1.38 (1.1-1.98)

                
                
                
                

                


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