I'd like to check the ability of a model to predict additional data using roc curves. The problem is that all of the methods to calculate sensitivity and specificity involve the roc option in Proc logistic. Even the roc macros don't provide these values, only roc plots and area under the curve stats. With a column of observed responses (1 or 0) and a column of predicted probabilities does anyone know a way to calculate the sensitivity and specificity for a range of cut points (I think the cut points have to be the same as the predicted probabilities)?
The reason I'm having this problem is that I've estimated the model in proc genmod. I can get the parameter estimates (from genmod), and make the predictions but I cant get the parameter estimates into logistic and use the roc option, and I cant get the sensitivity and specificity, from the two Roc macros....
I'd really appreciate any help.
Peter
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