Table 1.

Full Models’ Somers’ D Statistic showing 12–13% loss in predictive power.

Model	Original	Training data	Test data	Optimism	Corrected
Model B	−0.39	−0.46	−0.33	−0.12	−0.26
Model C	−0.51	−0.57	−0.45	−0.13	−0.38