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predictive power measure of ordinal regression

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predictive power measure of ordinal regression

1. Cox and Snell’s, Nagelkerke’s, and McFadden’s pseudo-R-square statistics can be used in ordinal regression to estimate the variance explained by the independent variable. But I do not know how I can get these measures in SAS.
2. I can get AUROC of ordinal regression model for training sample. I want to test this model in the holdout sample and get the AUROC for holdout sample. I can get the predicted probability. But how can I get the predicted category, the AUROC for holdout sample and the pseudo-R-square statistics for holdout sample?
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