U.S. Hospitals. The American Hospital Association conducts annual surveys of hospitals in the United States and publishes its findings in AHA Hospital Statistics. Data on hospital type for U.S. registered hospitals can be found on the WeissStats site. For convenience, we use the following abbreviations:

NPC: Nongovernment not-for-profit community hospitals IOC: Investor-owned (for-profit) community hospitals SLC: State and local government community hospitals FGH: Federal government hospitals NFP: Nonfederal psychiatric hospitals NLT: Nonfederal long-term-care hospitals HUI: Hospital units of institutions