Upcoming Changes in NHANES Survey Operations

The National Health and Nutrition Examination Survey (NHANES) is undergoing significant updates and modifications in its operations, including the use of trucks for mobility, an increase in statistical power, and the inclusion of new components like genetics testing and nasal microbiome analysis. NHANES will continue to conduct population-based surveys through in-home interviews and in-person exams. The 2025 survey will cover a wide range of health assessments, from anthropometry to dietary recall, with a focus on enhancing data collection and analysis processes.

• NHANES
• Health Survey
• Statistical Power
• Mobile Examination
• Health Assessments

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1. National Center for Health Statistics (NCHS) NHANES Update: NCHS Board of Scientific Counselors Alan Simon, MD, Director Division of Health and Nutrition Examination Surveys September 14, 2023

2. National Health and Nutrition Examination Survey (NHANES) A new era of NHANES We left the field in August 2023 Completing a 10 year contract cycle

3. National Health and Nutrition Examination Survey (NHANES) Back in the field January 2025 With a new contractor RTI Original aim was 2024 Delays obtaining contract meant started working with RTI just this year Extremely aggressive timeline Submitting ERB now

4. National Health and Nutrition Examination Survey (NHANES) What will be the same? Population-based survey In-home interviews In-person exams in Mobile Examination Centers

5. National Health and Nutrition Examination Survey (NHANES) What will be different?

6. Trucks vs. Trailers Trucks will allow us to be more nimble More than one location within a PSU Increase response rates Three truck set will form a Mobile Examination Center

7. More Statistical Power Going to more PSUs in the US each year from 15 per year to 20 Still 5000 participants per year Change from counties to Census Public Use Microdata Areas (PUMAs) Decrease number from each household sampled Spreading out sample across more households increases power Create estimates for smaller groups than before

8. What will be in the survey in 2025? For 2025 Anthropometry Dental exam Labs (Blood, Urine, return of genetics!) BP (3-7 requires more testing) Vision Hearing DXA Spirometry returns Nasal Microbiome Medications Dietary Recall

9. Collaborating with state and local data collections October 4th Webinar with state and local NHANES-like collections Allows us to learn from one another Possibility for future collaborations? Details and registration on website

10. Questions? www.cdc.gov/nchs For more information, contact CDC 1-800-CDC-INFO (232-4636) TTY: 1-888-232-6348 www.cdc.gov The findings and conclusions in this report are those of the authors and do not necessarily represent the official position of the Centers for Disease Control and Prevention.