Logistic Regression / Discriminant Analysis

Posted by KEVIN MANNING on Jan 19, 2007; 9:39pm
URL: http://spssx-discussion.165.s1.nabble.com/Logistic-Regression-Discriminant-Analysis-tp1073346.html

Dear all,

     Here is my dilemma:

I have 2 groups of participants, disease and no disease, and one continuous variable.

I want to determine a cut-off score for the variable that produces the best sensitivity and specificity.  How can I do this?

I was under the impression this could be accomplished using logistic regression, but I cannot figure it out  (I would also like to view the odds ratios that are produced as well).   ROC curves were equally confusing.

Any help at all would be most appreciated.  Thanks!!!

Kevin