Re: Deriving Formula from Ordinal Regression Results to Classify New Cases?

Posted by Maguin, Eugene on Oct 24, 2012; 2:03pm
URL: http://spssx-discussion.165.s1.nabble.com/Deciphering-from-t-test-the-mean-tp5715819p5715840.html

I may be misunderstanding some things but …

 

The “y” that is computed is the log odds. I’d think you want to know whether the probability of being in the comparison group is greater than 0.5. If so there are a couple of other computational steps.

 

Gene Maguin

 

 

From: SPSSX(r) Discussion [mailto:[hidden email]] On Behalf Of Yifan Lu
Sent: Wednesday, October 24, 2012 9:11 AM
To: [hidden email]
Subject: Re: Deriving Formula from Ordinal Regression Results to Classify New Cases?

 

Hi Vik,

 

I just did some similar work recently. Basically once you have output from an Ordinal Regression, write down the formula in Y= a+b1X1+b2X2+...you should know a and bi from your output. Then use this formula in your excel sheet as a simulation model in excel, with X1, X2...as independent variables for clients to enter. Y is the predicted value.

 

Hope this helps.

 

Clare

 

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From: SPSSX(r) Discussion on behalf of Vik Rubenfeld
Sent: Tue 10/23/2012 8:30 PM
To: [hidden email]
Subject: Deriving Formula from Ordinal Regression Results to Classify New Cases?

What is the correct method for deriving a formula from the results of an Ordinal Regression, that can be used to predict the value of the dependent variable for new cases?

Thanks very much in advance to all for any info.

Best,


-Vik

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