Principal Investigator(s): United States Department of Health and Human Services. National Center for Health Statistics
The National Ambulatory Medical Care Surveys (NAMCS) supply data on ambulatory medical care provided in physicians' offices. The 1990 survey contains information from 43,469 patient visits to 1,684 physicians. Data are available on the patient's reason for the visit, the physician's diagnosis, and the kinds of diagnostic and therapeutic services rendered. Information is included on the physician's specialization and geographical location. Demographic information on patients, such as age, sex, race, and ethnicity, was also collected.
These data are freely available.
U.S. Dept. of Health and Human Services, National Center for Health Statistics. NATIONAL AMBULATORY MEDICAL CARE SURVEY, 1990. Hyattsville, MD: U.S. Dept. of Health and Human Services, National Center for Health Statistics [producer], 1992. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 1992. doi:10.3886/ICPSR09831.v1
Persistent URL: http://doi.org/10.3886/ICPSR09831.v1
Scope of Study
Geographic Coverage: United States
Date of Collection:
Universe: Office visits made within the United States by patients of nonfederally employed physicians who were primarily involved in office-based patient care activities, but not engaged in the specialties of radiology, pathology, or anesthesiology.
Data Types: survey data
Data Collection Notes:
Per agreement with NCHS, ICPSR distributes the data file(s) and technical documentation in this collection in their original form as prepared by NCHS.
Sample: The 1990 NAMCS utilized a multistage probability sample design. Primary sampling units were selected in the first stage, physician practices within PSUs in the second stage, and patient visits to selected physicians in the third stage.
patient records completed by physicians
Original ICPSR Release: 1993-02-12
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