Table 4.

Percent of Hospitals with Excess Readmissions by Quartiles of Percent of Dual Eligibles

Risk Adjustment Method	AMI		Pneumonia		Heart Failure
	Hospitals in Lowest Quartile	Hospitals in Highest Quartile	Hospitals in Lowest Quartile	Hospitals in Highest Quartile	Hospitals in Lowest Quartile	Hospitals in Highest Quartile
CMS method	40	64	40	59	41	61
CMS method + patient dual eligible status	43	58	43	55	43	57
CMS method + patient dual eligible status + hospital share of dual eligibles	45	51	47	51	49	50
Number of hospitals	593	361	725	763	721	754

Note. For each condition, only hospitals with at least eight index discharges were included in the calculations.

AMI, acute myocardial infarction.

Source. Authors' analysis.