Table III.

 Discrimination Statistics in Training Sample (N=7610) and Testing (N=3692) Sample

Dataset, Covariate	Area Under the Receiver Operating Characteristic Curve
	3 Years	6 Years	9 Years	Ever
Training, continuous	0.739	0.755	0.800	0.782
Training, categorical	0.747	0.760	0.799	0.783
Testing, continuous	0.751	0.743	0.773	0.761
Testing, categorical	0.754	0.747	0.776	0.763