The PHREG Procedure

ROC Statement

ROC <'label'> specification;

The ROC statement specifies a model to be used in the concordance analysis or ROC analysis. There is no limit to the number of ROC statements that you can have. You can specify a label in quotation marks to identify an ROC statement. If you do not specify a label, the model in the ith ROC statement is labeled "ROCi".

You can specify one of the following specifications:

effect-list: specifies a list of effects that have previously been specified in the MODEL statement.
PRED=variable: specifies a variable in the input data set. The variable does not have to be specified in the MODEL statement. For an example, see Example 92.16.
SOURCE=item-store-name: specifies a one- or two-level name of an existing item store.

The PRED= option and the SOURCE= option enable you to input a model that is produced outside PROC PHREG; for example, you can fit a parametric survival model by using PROC LIFEREG, save the model in an item store, and then specify the item-store name in the SOURCE= option in a ROC statement to produce an ROC analysis of the imported model.

Last updated: December 09, 2022