Each of our annual independent studies noted below is founded on transparent methodologies. Criteria for qualifying hospitals and key performance measures are listed below. For more detailed information, please review the methodology highlights posted for each of the three studies.
Public data sources include:
Short-term, acute care, nonfederal US hospitals treating a broad spectrum of patients.
Key performance measures
Short-term, acute care, nonfederal US hospitals with an open heart program. Specialty heart hospitals are included.
Qualifying health systems
A health system must have at least two short-term, acute care, nonfederal US hospitals that report a parent or related organization in their cost report. Specialty hospitals, such as Womens', Orthopedics, Cardiac, and Critical Access, are included in the study if they belong to a system.
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