Table 1. Patient Characteristics.

Characteristic	All, Mean (IQR)
No.	3 760 623
Age, y	72.3 (67.0-80.0)
Female, %	58.5
Race, %
White	85.3
Black	8.8
Other	3.2
Medicaid, %	21.0
HCC score	1.4 (0.6-1.7)
Included patients per hospital referral region, no.	73 737.7 (29 205.0-96 136.0)
Assigned patients per community, no.	10 039.0 (3 992.2-13 459.0)

Abbreviations: HCC, hierarchical condition categories; IQR, interquartile range.