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The National Health and Nutrition Examination Survey (NHANES) was conducted on a periodic basis from 1971 to 1994. In 1999, NHANES became continuous. Every year, approximately 5,000 individuals of all ages are interviewed in their homes and participate in a health examination, which is conducted in a mobile examination center (MEC).
Since 1999, NHANES has been conducted on an ongoing basis with public-use data being released in two-year cycles, and is referred to as continuous NHANES. The sample for each two-year cycle is representative of the non-institutionalized U.S. population. For more information about survey methodology and how to use the data, please review the ...
The National Health and Nutrition Examination Surveys (NHANES) were conducted on a periodic basis from 1971 to 1994. In 1999, NHANES became continuous. Every year, approximately 5,000 individuals of all ages are interviewed in their homes and complete the health examination component of the survey.
NHANES Interactive Data Visualizations. These data represent estimates from the National Health and Nutrition Examination Survey (NHANES) from 1999–2000 through 2017–2018. Select a dashboard from the drop-down menu, then click on “Update Dashboard” to navigate through topics and show results of the visualizations.
National Health and Nutrition Examination Survey, 2017–March 2020 Prepandemic File: Sample Design, Estimation, and Analytic Guidelines [PDF – 1 MB] Data Release. Vitamin A, Vitamin E & Carotenoids (VITAEC_J 2017-2018) Data Release – Limited Access Data. Folate Forms – Total & Individual – Washed RBCs (FFMR_K_R 2019-2020) Updated Data
Print. The National Health and Nutrition Examination Survey (NHANES) is a national survey that monitors the health and nutritional status of adults and children across the United States. The survey is unique in that it combines interviews and physical examinations. NHANES is run by the National Center for Health Statistics (NCHS).
CHANGES TO THE SAMPLE DESIGN. Starting in 2023, NHANES is expected to undergo a substantial survey redesign. 6 Therefore, NHANES 2021–2022 will be the last cycle of a continuous survey that began in 1999 collecting data annually and publicly releasing data every 2 years. Over its history, NHANES has oversampled certain subgroups to ensure adequate sample sizes to obtain precise estimates for ...
