Is Logistic Regression model fit output correct?

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rehnuma
Posts: 2
Joined: Thu Nov 13, 2014 5:27 pm

Is Logistic Regression model fit output correct?

Postby rehnuma » Thu Nov 13, 2014 5:51 pm

I can't make sense of SPSS output for model fit indices in logistic regression. Deviance and -2LL statistics do not match with the earlier version and other software. I had the same issue with many datasets. Here is a simple example. Let x (predictor) be 1,2,3,4,4,5,6,7,8,8,9 and y (dependent var.) be 0,0,0,0,0,0,1,1,0,1,1.

The output from an earlier version of SPSS (I don't know how early it is), from R, and from SPSS 19 is attached.

You will notice that parameter estimates are all identical. However, while the deviance and -2LL statistics are matching for the earlier version of SPSS and R, those statistics are so different for SPSS 19, and make no sense.

Do you have any idea what is wrong here?
rehnuma
Posts: 2
Joined: Thu Nov 13, 2014 5:27 pm

Re: Is Logistic Regression model fit output correct?

Postby rehnuma » Thu Nov 13, 2014 5:54 pm

I don't know why I can't attach the picture. Here is a link for the relevant output.

https://www.dropbox.com/s/iwxghvrrt851z4m/all.jpg?dl=0

thanks

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