Series type
In-country survey series
Time period
1992 - 2022
The United States National Hospital Ambulatory Medical Care Survey (NHAMCS) is based on outpatient visits to physicians and hospital emergency rooms and is designed to collect data on the use of ambulatory care services. Conducted in all fifty states and the District of Columbia, it is a national sample of non-institutional general and short-stay hospitals, excluding federal, military and VA hospitals. NHMACS data collection was concluded with the 2022 survey.
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