Table 1

Background information about each site

Site1234
LocationRuralUrban/ruralUrbanUrban/rural
Main components of organisationHospital system and physician groupIndependent practice association and hospital systemIndependent practice association and hospital systemIntegrated delivery system
Attributed Medicare population size5000–10 00010 000–30 00010 000–30 000>30 000
Approximate population of main geographical area<200k200k–1 million>1 million>1 million
Number of ACO interviews8768
Number of Public health agency interviews2323
  • ACO, accountable care organisation.