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st: Binary and ologit


From   "Shittu, Aminu" <ameen_vet@yahoo.com>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   st: Binary and ologit
Date   Tue, 31 Jul 2012 09:08:06 -0700 (PDT)

Hi Statalisters,

The type of response in this multivariable data looks pretty strange to me. In the data, there is only one diagnosis of disease in cattle, but in sheep it was categorised as either acute or chronic based on laboratory confirmation. Binary logistic regression will work well for sheep, if we are to drop the cattle specie. It will be ordered logit (acute, chronic or disease) if we are to work with both (cattle and sheep), but cattle belongs to one category of response so I was wondering on the kind of modelling approach should I use if both species of animals are to be included in the model?
 
Yours,
 
Aminu.

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