1992 to present
Mode of Collection
Multi-stage probability sample survey: computer assisted personal interviews (CAPI) and abstraction of data.
The National Hospital Ambulatory Medical Care Survey (NHAMCS) collects data on the utilization and provision of medical care services provided in hospital emergency and outpatient departments. Data are collected from medical records.
The survey is a representative sample of visits to emergency departments and outpatient departments of nonfederal, short-stay, or general hospitals. Telephone contacts are excluded.