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National Health and Nutrition Examination Survey (NHANES)

Description: The National Health and Nutrition Examination Survey (NHANES) is a program of studies designed to assess the health and nutritional status of adults and children in the United States. The survey is unique in that it combines interviews and physical examinations. NHANES is a major program of the National Center for Health Statistics (NCHS). NCHS is part of the Centers for Disease Control and Prevention (CDC) and has the responsibility for producing vital and health statistics for the Nation.

Coverage: National

Description of Cohort:Patients are selected to represent the U.S. population of all ages. These persons are located in counties across the country, 15 of which are visited each year.


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