Table 1.

Comparison of Patient Characteristics Treated in Selected ARR Quartile Hospitals and SNFs in 2011

Variable	Hospitals in ARR Quartile 1	Hospitals in ARR Quartile 4	SNFs in ARR Quartile 1	SNFs in ARR Quartile 4
Number of patients	164,866	168,531	217,268	194,108
Age	81.43	81.17	81.42	81.26
Female	0.66	0.64	0.66	0.64
Black	0.05	0.12	0.05	0.1
White	0.93	0.84	0.92	0.86
Dual eligible	0.22	0.29	0.2	0.29
Hospital length of stay	6.43	7.58	6.56	7.52
Any ICU use	0.32	0.38	0.33	0.38
Deyo index	1.66	1.87	1.63	1.88
Elixhauser index	2.79	2.85	2.77	2.88
Actual 30‐day rehospitalization rate	16.36	23.42	17.74	24.2
Predicted 30‐day rehospitalization rate	19.15	20.68	20.14	21.27
Adjusted 30‐day rehospitalization rate (ARR)	17.37	23.01	17.85	23.12

Adjusted rehospitalization rate (ARR) quartiles are based on ARR for patients in 2009–2010.