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st: ordinal response variables in logistic regression


From   "Jian Liu" <jliu@brocku.ca>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: ordinal response variables in logistic regression
Date   Thu, 13 Apr 2006 13:43:23 -0400

Dear list -members,

Please ignore it if you have read it before.

I'm trying to use logistic regression models to analyze the association
between SES and physical activity levels. My dependent variable is physical
activity level, which are grouped into three levels:  a. regularly (ref), b.
occasionally, and infrequently. My questions are:
1. Can I conduct two separated logistic regression models to examine the
impact of SES on physical activity levels 
    a. DV (regularly vs occasionally) 
    b. DV (regularly vs infrequently)
or I have to run logistic regression with physical activity levels as
ordinal response variables?
2. if using two separated models is acceptable, is there anything missing in
comparing to using logistic regression with ordinal response variables?

3. what is the stata codes for this type analysis?

Thanks in advance for your help!

Jason Liu


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