Table 2.

Performance measures in baseline model, enhanced model, and final model.

Measures	Baseline model	Enhanced model	Final model	CMS-HCC model
R2	0.19	0.24	0.24	0.09
PCA in top 10% setting, %	40	42	43	27
CA in top 10% setting, %	58	61	63	45
PCA in top 20% setting, %	50	52	53	35
CA in top 20% setting, %	66	68	69	57

CA, cost accuracy; CMS-HCC, Centers for Medicare & Medicaid Services Hierarchical Condition Categories; PCA, patient classification accuracy.